Adding upstream version 1:10.5.12.upstream/1%10.5.12upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

11 files changed, 3158 insertions, 0 deletions

diff --git a/plugin/handler_socket/client/Makefile.am b/plugin/handler_socket/client/Makefile.am
new file mode 100644
index 00000000..e89727a7
--- /dev/null
+++ b/plugin/handler_socket/client/Makefile.am
@@ -0,0 +1,24 @@
+CXXFLAGS += -fimplicit-templates
+AM_INCLUDES= -I$(srcdir)/../libhsclient
+bin_PROGRAMS=hsclient 
+hsclient_SOURCES= hsclient.cpp
+hsclient_LDFLAGS= -static -L../libhsclient -lhsclient
+hsclient_CXXFLAGS= $(AM_INCLUDES)
+
+hstest: hstest.o
+	$(CXX) $(CXXFLAGS) $(MY_CXXFLAGS) $(LFLAGS) hstest.o \
+		-L../libhsclient/.libs -lhsclient $(MYSQL_LIB) \
+		-o hstest
+
+hstest.o: hstest.cpp
+	$(CXX) $(CXXFLAGS) $(MY_CXXFLAGS) $(MYSQL_INC) $(AM_INCLUDES) \
+		-c hstest.cpp
+
+hslongrun: hslongrun.o
+	$(CXX) $(CXXFLAGS) $(MY_CXXFLAGS) $(LFLAGS) hslongrun.o \
+		-L../libhsclient/.libs -lhsclient $(MYSQL_LIB) \
+		-o hslongrun
+
+hslongrun.o: hslongrun.cpp
+	$(CXX) $(CXXFLAGS) $(MY_CXXFLAGS) $(MYSQL_INC) $(AM_INCLUDES) \
+		-c hslongrun.cpp
diff --git a/plugin/handler_socket/client/hsclient.cpp b/plugin/handler_socket/client/hsclient.cpp
new file mode 100644
index 00000000..0dd8332e
--- /dev/null
+++ b/plugin/handler_socket/client/hsclient.cpp
@@ -0,0 +1,88 @@
+
+// vim:sw=2:ai
+
+#include "hstcpcli.hpp"
+#include "string_util.hpp"
+
+namespace dena {
+
+int
+hstcpcli_main(int argc, char **argv)
+{
+  config conf;
+  parse_args(argc, argv, conf);
+  socket_args sockargs;
+  sockargs.set(conf);
+  hstcpcli_ptr cli = hstcpcli_i::create(sockargs);
+  const std::string dbname = conf.get_str("dbname", "hstest");
+  const std::string table = conf.get_str("table", "hstest_table1");
+  const std::string index = conf.get_str("index", "PRIMARY");
+  const std::string fields = conf.get_str("fields", "k,v");
+  const int limit = conf.get_int("limit", 0);
+  const int skip = conf.get_int("skip", 0);
+  std::vector<std::string> keys;
+  std::vector<string_ref> keyrefs;
+  size_t num_keys = 0;
+  while (true) {
+    const std::string conf_key = std::string("k") + to_stdstring(num_keys);
+    const std::string k = conf.get_str(conf_key, "");
+    const std::string kx = conf.get_str(conf_key, "x");
+    if (k.empty() && kx == "x") {
+      break;
+    }
+    ++num_keys;
+    keys.push_back(k);
+  }
+  for (size_t i = 0; i < keys.size(); ++i) {
+    const string_ref ref(keys[i].data(), keys[i].size());
+    keyrefs.push_back(ref);
+  }
+  const std::string op = conf.get_str("op", "=");
+  const string_ref op_ref(op.data(), op.size());
+  cli->request_buf_open_index(0, dbname.c_str(), table.c_str(),
+    index.c_str(), fields.c_str());
+  cli->request_buf_exec_generic(0, op_ref, num_keys == 0 ? 0 : &keyrefs[0],
+    num_keys, limit, skip, string_ref(), 0, 0);
+  int code = 0;
+  size_t numflds = 0;
+  do {
+    if (cli->request_send() != 0) {
+      fprintf(stderr, "request_send: %s\n", cli->get_error().c_str());
+      break;
+    }
+    if ((code = cli->response_recv(numflds)) != 0) {
+      fprintf(stderr, "response_recv: %s\n", cli->get_error().c_str());
+      break;
+    }
+  } while (false);
+  cli->response_buf_remove();
+  do {
+    if ((code = cli->response_recv(numflds)) != 0) {
+      fprintf(stderr, "response_recv: %s\n", cli->get_error().c_str());
+      break;
+    }
+    while (true) {
+      const string_ref *const row = cli->get_next_row();
+      if (row == 0) {
+	break;
+      }
+      printf("REC:");
+      for (size_t i = 0; i < numflds; ++i) {
+	const std::string val(row[i].begin(), row[i].size());
+	printf(" %s", val.c_str());
+      }
+      printf("\n");
+    }
+  } while (false);
+  cli->response_buf_remove();
+  return 0;
+}
+
+};
+
+int
+main(int argc, char **argv)
+{
+  return dena::hstcpcli_main(argc, argv);
+}
+
diff --git a/plugin/handler_socket/client/hslongrun.cpp b/plugin/handler_socket/client/hslongrun.cpp
new file mode 100644
index 00000000..b7c02951
--- /dev/null
+++ b/plugin/handler_socket/client/hslongrun.cpp
@@ -0,0 +1,1041 @@
+
+// vim:sw=2:ai
+
+#include <signal.h>
+#include <sys/time.h>
+#include <stdio.h>
+#include <string.h>
+#include <vector>
+#include <map>
+#include <stdlib.h>
+#include <memory>
+#include <errno.h>
+#include <mysql.h>
+#include <time.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include "util.hpp"
+#include "auto_ptrcontainer.hpp"
+#include "socket.hpp"
+#include "hstcpcli.hpp"
+#include "string_util.hpp"
+#include "mutex.hpp"
+
+namespace dena {
+
+struct auto_mysql : private noncopyable {
+  auto_mysql() : db(0) {
+    reset();
+  }
+  ~auto_mysql() {
+    if (db) {
+      mysql_close(db);
+    }
+  }
+  void reset() {
+    if (db) {
+      mysql_close(db);
+    }
+    if ((db = mysql_init(0)) == 0) {
+      fatal_abort("failed to initialize mysql client");
+    }
+  }
+  operator MYSQL *() const { return db; }
+ private:
+  MYSQL *db;
+};
+
+struct auto_mysql_res : private noncopyable {
+  auto_mysql_res(MYSQL *db) {
+    res = mysql_store_result(db);
+  }
+  ~auto_mysql_res() {
+    if (res) {
+      mysql_free_result(res);
+    }
+  }
+  operator MYSQL_RES *() const { return res; }
+ private:
+  MYSQL_RES *res;
+};
+
+struct auto_mysql_stmt : private noncopyable {
+  auto_mysql_stmt(MYSQL *db) {
+    stmt = mysql_stmt_init(db);
+  }
+  ~auto_mysql_stmt() {
+    if (stmt) {
+      mysql_stmt_close(stmt);
+    }
+  }
+  operator MYSQL_STMT *() const { return stmt; }
+ private:
+  MYSQL_STMT *stmt;
+};
+
+double
+gettimeofday_double()
+{
+  struct timeval tv = { };
+  if (gettimeofday(&tv, 0) != 0) {
+    fatal_abort("gettimeofday");
+  }
+  return static_cast<double>(tv.tv_usec) / 1000000 + tv.tv_sec;
+}
+
+struct record_value {
+  mutex lock;
+  bool deleted;
+  bool unknown_state;
+  std::string key;
+  std::vector<std::string> values;
+  record_value() : deleted(true), unknown_state(false) { }
+};
+
+struct hs_longrun_shared {
+  config conf;
+  socket_args arg;
+  int verbose;
+  long num_threads;
+  int usleep;
+  volatile mutable int running;
+  auto_ptrcontainer< std::vector<record_value *> > records;
+  hs_longrun_shared() : verbose(0), num_threads(0), usleep(0), running(1) { }
+};
+
+struct thread_base {
+  thread_base() : need_join(false), stack_size(256 * 1024) { }
+  virtual ~thread_base() {
+    join();
+  }
+  virtual void run() = 0;
+  void start() {
+    if (!start_nothrow()) {
+      fatal_abort("thread::start");
+    }
+  }
+  bool start_nothrow() {
+    if (need_join) {
+      return need_join; /* true */
+    }
+    void *const arg = this;
+    pthread_attr_t attr;
+    if (pthread_attr_init(&attr) != 0) {
+      fatal_abort("pthread_attr_init");
+    }
+    if (pthread_attr_setstacksize(&attr, stack_size) != 0) {
+      fatal_abort("pthread_attr_setstacksize");
+    }
+    const int r = pthread_create(&thr, &attr, thread_main, arg);
+    if (pthread_attr_destroy(&attr) != 0) {
+      fatal_abort("pthread_attr_destroy");
+    }
+    if (r != 0) {
+      return need_join; /* false */
+    }
+    need_join = true;
+    return need_join; /* true */
+  }
+  void join() {
+    if (!need_join) {
+      return;
+    }
+    int e = 0;
+    if ((e = pthread_join(thr, 0)) != 0) {
+      fatal_abort("pthread_join");
+    }
+    need_join = false;
+  }
+ private:
+  static void *thread_main(void *arg) {
+    thread_base *p = static_cast<thread_base *>(arg);
+    p->run();
+    return 0;
+  }
+ private:
+  pthread_t thr;
+  bool need_join;
+  size_t stack_size;
+};
+
+struct hs_longrun_stat {
+  unsigned long long verify_error_count;
+  unsigned long long runtime_error_count;
+  unsigned long long unknown_count;
+  unsigned long long success_count;
+  hs_longrun_stat()
+    : verify_error_count(0), runtime_error_count(0),
+      unknown_count(0), success_count(0) { }
+  void add(const hs_longrun_stat& x) {
+    verify_error_count += x.verify_error_count;
+    runtime_error_count += x.runtime_error_count;
+    unknown_count += x.unknown_count;
+    success_count += x.success_count;
+  }
+};
+
+struct hs_longrun_thread_base : public thread_base {
+  struct arg_type {
+    int id;
+    std::string worker_type;
+    char op;
+    int lock_flag;
+    const hs_longrun_shared& sh;
+    arg_type(int id, const std::string& worker_type, char op, int lock_flag,
+      const hs_longrun_shared& sh)
+      : id(id), worker_type(worker_type), op(op), lock_flag(lock_flag),
+	sh(sh) { }
+  };
+  arg_type arg;
+  hs_longrun_stat stat;
+  drand48_data randbuf;
+  unsigned int seed;
+  hs_longrun_thread_base(const arg_type& arg)
+    : arg(arg), seed(0) {
+    seed = time(0) + arg.id + 1;
+    srand48_r(seed, &randbuf);
+  }
+  virtual ~hs_longrun_thread_base() { }
+  virtual void run() = 0;
+  size_t rand_record() {
+    double v = 0;
+    drand48_r(&randbuf, &v);
+    const size_t sz = arg.sh.records.size();
+    size_t r = size_t(v * sz);
+    if (r >= sz) {
+      r = 0;
+    }
+    return r;
+  }
+  int verify_update(const std::string& k, const std::string& v1,
+    const std::string& v2, const std::string& v3, record_value& rec,
+    uint32_t num_rows, bool cur_unknown_state);
+  int verify_read(const std::string& k, uint32_t num_rows, uint32_t num_flds,
+    const std::string rrec[4], record_value& rec);
+  int verify_readnolock(const std::string& k, uint32_t num_rows,
+    uint32_t num_flds, const std::string rrec[4]);
+};
+
+int
+hs_longrun_thread_base::verify_update(const std::string& k,
+  const std::string& v1, const std::string& v2, const std::string& v3,
+  record_value& rec, uint32_t num_rows, bool cur_unknown_state)
+{
+  const bool op_success = num_rows == 1;
+  int ret = 0;
+  if (!rec.unknown_state) {
+    if (!rec.deleted && !op_success) {
+      ++stat.verify_error_count;
+      if (arg.sh.verbose > 0) {
+	fprintf(stderr, "VERIFY_ERROR: %s wid=%d k=%s "
+	  "unexpected_update_failure\n",
+	  arg.worker_type.c_str(), arg.id, k.c_str());
+      }
+      ret = 1;
+    } else if (rec.deleted && op_success) {
+      ++stat.verify_error_count;
+      if (arg.sh.verbose > 0) {
+	fprintf(stderr, "VERIFY_ERROR: %s wid=%d k=%s "
+	  "unexpected_update_success\n",
+	  arg.worker_type.c_str(), arg.id, k.c_str());
+      }
+      ret = 1;
+    }
+  }
+  if (op_success) {
+    rec.values.resize(4);
+    rec.values[0] = k;
+    rec.values[1] = v1;
+    rec.values[2] = v2;
+    rec.values[3] = v3;
+    if (ret == 0 && !rec.unknown_state) {
+      ++stat.success_count;
+    }
+  }
+  rec.unknown_state = cur_unknown_state;
+  if (arg.sh.verbose >= 100 && ret == 0) {
+    fprintf(stderr, "%s %s %s %s %s\n", arg.worker_type.c_str(),
+      k.c_str(), v1.c_str(), v2.c_str(), v3.c_str());
+  }
+  return ret;
+}
+
+int
+hs_longrun_thread_base::verify_read(const std::string& k,
+  uint32_t num_rows, uint32_t num_flds, const std::string rrec[4],
+  record_value& rec)
+{
+  const bool op_success = num_rows != 0;
+  int ret = 0;
+  if (!rec.unknown_state) {
+    if (!rec.deleted && !op_success) {
+      ++stat.verify_error_count;
+      if (arg.sh.verbose > 0) {
+	fprintf(stderr, "VERIFY_ERROR: %s wid=%d k=%s "
+	  "unexpected_read_failure\n",
+	  arg.worker_type.c_str(), arg.id, k.c_str());
+      }
+      ret = 1;
+    } else if (rec.deleted && op_success) {
+      ++stat.verify_error_count;
+      if (arg.sh.verbose > 0) {
+	fprintf(stderr, "VERIFY_ERROR: %s wid=%d k=%s "
+	  "unexpected_read_success\n",
+	  arg.worker_type.c_str(), arg.id, k.c_str());
+      }
+      ret = 1;
+    } else if (num_flds != 4) {
+      ++stat.verify_error_count;
+      if (arg.sh.verbose > 0) {
+	fprintf(stderr, "VERIFY_ERROR: %s wid=%d k=%s "
+	  "unexpected_read_fldnum %d\n",
+	  arg.worker_type.c_str(), arg.id, k.c_str(),
+	  static_cast<int>(num_flds));
+      }
+      ret = 1;
+    } else if (rec.deleted) {
+      /* nothing to verify */
+    } else {
+      int diff = 0;
+      for (size_t i = 0; i < 4; ++i) {
+	if (rec.values[i] == rrec[i]) {
+	  /* ok */
+	} else {
+	  diff = 1;
+	}
+      }
+      if (diff) {
+	std::string mess;
+	for (size_t i = 0; i < 4; ++i) {
+	  const std::string& expected = rec.values[i];
+	  const std::string& val = rrec[i];
+	  mess += " " + val + "/" + expected;
+	}
+	if (arg.sh.verbose > 0) {
+	  fprintf(stderr, "VERIFY_ERROR: %s wid=%d k=%s "
+	    "unexpected_read_value %s\n",
+	    arg.worker_type.c_str(), arg.id, k.c_str(), mess.c_str());
+	}
+	ret = 1;
+      }
+    }
+  }
+  if (arg.sh.verbose >= 100 && ret == 0) {
+    fprintf(stderr, "%s %s\n", arg.worker_type.c_str(), k.c_str());
+  }
+  if (ret == 0 && !rec.unknown_state) {
+    ++stat.success_count;
+  }
+  return ret;
+}
+
+int
+hs_longrun_thread_base::verify_readnolock(const std::string& k,
+  uint32_t num_rows, uint32_t num_flds, const std::string rrec[4])
+{
+  int ret = 0;
+  if (num_rows != 1 || num_flds != 4) {
+    ++stat.verify_error_count;
+    if (arg.sh.verbose > 0) {
+      fprintf(stderr, "VERIFY_ERROR: %s wid=%d k=%s "
+	"unexpected_read_failure\n",
+	arg.worker_type.c_str(), arg.id, k.c_str());
+    }
+    ret = 1;
+  }
+  if (arg.sh.verbose >= 100 && ret == 0) {
+    fprintf(stderr, "%s -> %s %s %s %s %s\n", arg.worker_type.c_str(),
+      k.c_str(), rrec[0].c_str(), rrec[1].c_str(), rrec[2].c_str(),
+      rrec[3].c_str());
+  }
+  if (ret == 0) {
+    ++stat.success_count;
+  }
+  return ret;
+}
+
+struct hs_longrun_thread_hs : public hs_longrun_thread_base {
+  hs_longrun_thread_hs(const arg_type& arg)
+    : hs_longrun_thread_base(arg) { }
+  void run();
+  int check_hs_error(const char *mess, record_value *rec);
+  int op_insert(record_value& rec);
+  int op_delete(record_value& rec);
+  int op_update(record_value& rec);
+  int op_read(record_value& rec);
+  int op_readnolock(int k);
+  hstcpcli_ptr cli;
+  socket_args sockargs;
+};
+
+struct lock_guard : noncopyable {
+  lock_guard(mutex& mtx) : mtx(mtx) {
+    mtx.lock();
+  }
+  ~lock_guard() {
+    mtx.unlock();
+  }
+  mutex& mtx;
+};
+
+string_ref
+to_string_ref(const std::string& s)
+{
+  return string_ref(s.data(), s.size());
+}
+
+std::string
+to_string(const string_ref& s)
+{
+  return std::string(s.begin(), s.size());
+}
+
+void
+hs_longrun_thread_hs::run()
+{
+  config c = arg.sh.conf;
+  if (arg.op == 'R' || arg.op == 'N') {
+    c["port"] = to_stdstring(arg.sh.conf.get_int("hsport", 9998));
+  } else {
+    c["port"] = to_stdstring(arg.sh.conf.get_int("hsport_wr", 9999));
+  }
+  sockargs.set(c);
+
+  while (arg.sh.running) {
+    if (cli.get() == 0 || !cli->stable_point()) {
+      cli = hstcpcli_i::create(sockargs);
+      if (check_hs_error("connect", 0) != 0) {
+	cli.reset();
+	continue;
+      }
+      cli->request_buf_open_index(0, "hstestdb", "hstesttbl", "PRIMARY",
+	"k,v1,v2,v3", "k,v1,v2,v3");
+      cli->request_send();
+      if (check_hs_error("openindex_send", 0) != 0) {
+	cli.reset();
+	continue;
+      }
+      size_t num_flds = 0;
+      cli->response_recv(num_flds);
+      if (check_hs_error("openindex_recv", 0) != 0) {
+	cli.reset();
+	continue;
+      }
+      cli->response_buf_remove();
+    }
+    const size_t rec_id = rand_record();
+    if (arg.lock_flag) {
+      record_value& rec = *arg.sh.records[rec_id];
+      lock_guard g(rec.lock);
+      int e = 0;
+      switch (arg.op) {
+      case 'I':
+	e = op_insert(rec);
+	break;
+      case 'D':
+	e = op_delete(rec);
+	break;
+      case 'U':
+	e = op_update(rec);
+	break;
+      case 'R':
+	e = op_read(rec);
+	break;
+      default:
+	break;
+      }
+    } else {
+      int e = 0;
+      switch (arg.op) {
+      case 'N':
+	e = op_readnolock(rec_id);
+	break;
+      default:
+	break;
+      }
+    }
+  }
+}
+
+int
+hs_longrun_thread_hs::op_insert(record_value& rec)
+{
+  const std::string k = rec.key;
+  const std::string v1 = "iv1_" + k + "_" + to_stdstring(arg.id);
+  const std::string v2 = "iv2_" + k + "_" + to_stdstring(arg.id);
+  const std::string v3 = "iv3_" + k + "_" + to_stdstring(arg.id);
+  const string_ref op_ref("+", 1);
+  const string_ref op_args[4] = {
+    to_string_ref(k),
+    to_string_ref(v1),
+    to_string_ref(v2),
+    to_string_ref(v3)
+  };
+  cli->request_buf_exec_generic(0, op_ref, op_args, 4, 1, 0,
+    string_ref(), 0, 0, 0, 0);
+  cli->request_send();
+  if (check_hs_error("op_insert_send", &rec) != 0) { return 1; }
+  size_t numflds = 0;
+  cli->response_recv(numflds);
+  if (arg.sh.verbose > 10) {
+    const string_ref *row = cli->get_next_row();
+    fprintf(stderr, "HS op=+ errrcode=%d errmess=[%s]\n", cli->get_error_code(),
+      row ? to_string(row[0]).c_str() : "");
+  }
+  const bool op_success = cli->get_error_code() == 0;
+  int ret = 0;
+  if (!rec.unknown_state) {
+    if (rec.deleted && !op_success) {
+      ++stat.verify_error_count;
+      if (arg.sh.verbose > 0) {
+	fprintf(stderr, "VERIFY_ERROR: %s wid=%d k=%s "
+	  "unexpected_insert_failure\n",
+	  arg.worker_type.c_str(), arg.id, k.c_str());
+      }
+      ret = 1;
+    } else if (!rec.deleted && op_success) {
+      ++stat.verify_error_count;
+      if (arg.sh.verbose > 0) {
+	fprintf(stderr, "VERIFY_ERROR: %s wid=%d k=%s "
+	  "unexpected_insert_success\n",
+	  arg.worker_type.c_str(), arg.id, k.c_str());
+      }
+      ret = 1;
+    }
+  } else {
+    ++stat.unknown_count;
+  }
+  if (op_success) {
+    rec.values.resize(4);
+    rec.values[0] = k;
+    rec.values[1] = v1;
+    rec.values[2] = v2;
+    rec.values[3] = v3;
+    rec.deleted = false;
+    if (arg.sh.verbose >= 100 && ret == 0) {
+      fprintf(stderr, "HS_INSERT %s %s %s %s\n", k.c_str(), v1.c_str(),
+	v2.c_str(), v3.c_str());
+    }
+    if (ret == 0 && !rec.unknown_state) {
+      ++stat.success_count;
+    }
+    rec.unknown_state = false;
+  }
+  cli->response_buf_remove();
+  return ret;
+}
+
+int
+hs_longrun_thread_hs::op_delete(record_value& rec)
+{
+  const std::string k = rec.key;
+  const string_ref op_ref("=", 1);
+  const string_ref op_args[1] = {
+    to_string_ref(k),
+  };
+  const string_ref modop_ref("D", 1);
+  cli->request_buf_exec_generic(0, op_ref, op_args, 1, 1, 0,
+    modop_ref, 0, 0, 0, 0);
+  cli->request_send();
+  if (check_hs_error("op_delete_send", &rec) != 0) { return 1; }
+  size_t numflds = 0;
+  cli->response_recv(numflds);
+  if (check_hs_error("op_delete_recv", &rec) != 0) { return 1; }
+  const string_ref *row = cli->get_next_row();
+  const bool op_success = (numflds > 0 && row != 0 &&
+    to_string(row[0]) == "1");
+  int ret = 0;
+  if (!rec.unknown_state) {
+    if (!rec.deleted && !op_success) {
+      ++stat.verify_error_count;
+      if (arg.sh.verbose > 0) {
+	fprintf(stderr, "VERIFY_ERROR: %s wid=%d k=%s "
+	  "unexpected_delete_failure\n",
+	  arg.worker_type.c_str(), arg.id, k.c_str());
+      }
+      ret = 1;
+    } else if (rec.deleted && op_success) {
+      ++stat.verify_error_count;
+      if (arg.sh.verbose > 0) {
+	fprintf(stderr, "VERIFY_ERROR: %s wid=%d k=%s "
+	  "unexpected_delete_success\n",
+	  arg.worker_type.c_str(), arg.id, k.c_str());
+      }
+      ret = 1;
+    }
+  }
+  cli->response_buf_remove();
+  if (op_success) {
+    rec.deleted = true;
+    if (ret == 0 && !rec.unknown_state) {
+      ++stat.success_count;
+    }
+    rec.unknown_state = false;
+  }
+  if (arg.sh.verbose >= 100 && ret == 0) {
+    fprintf(stderr, "HS_DELETE %s\n", k.c_str());
+  }
+  return ret;
+}
+
+int
+hs_longrun_thread_hs::op_update(record_value& rec)
+{
+  const std::string k = rec.key;
+  const std::string v1 = "uv1_" + k + "_" + to_stdstring(arg.id);
+  const std::string v2 = "uv2_" + k + "_" + to_stdstring(arg.id);
+  const std::string v3 = "uv3_" + k + "_" + to_stdstring(arg.id);
+  const string_ref op_ref("=", 1);
+  const string_ref op_args[1] = {
+    to_string_ref(k),
+  };
+  const string_ref modop_ref("U", 1);
+  const string_ref modop_args[4] = {
+    to_string_ref(k),
+    to_string_ref(v1),
+    to_string_ref(v2),
+    to_string_ref(v3)
+  };
+  cli->request_buf_exec_generic(0, op_ref, op_args, 1, 1, 0,
+    modop_ref, modop_args, 4, 0, 0);
+  cli->request_send();
+  if (check_hs_error("op_update_send", &rec) != 0) { return 1; }
+  size_t numflds = 0;
+  cli->response_recv(numflds);
+  if (check_hs_error("op_update_recv", &rec) != 0) { return 1; }
+  const string_ref *row = cli->get_next_row();
+  uint32_t num_rows = row
+    ? atoi_uint32_nocheck(row[0].begin(), row[0].end()) : 0;
+  cli->response_buf_remove();
+  const bool cur_unknown_state = (num_rows == 1);
+  return verify_update(k, v1, v2, v3, rec, num_rows, cur_unknown_state);
+}
+
+int
+hs_longrun_thread_hs::op_read(record_value& rec)
+{
+  const std::string k = rec.key;
+  const string_ref op_ref("=", 1);
+  const string_ref op_args[1] = {
+    to_string_ref(k),
+  };
+  cli->request_buf_exec_generic(0, op_ref, op_args, 1, 1, 0,
+    string_ref(), 0, 0, 0, 0);
+  cli->request_send();
+  if (check_hs_error("op_read_send", 0) != 0) { return 1; }
+  size_t num_flds = 0;
+  size_t num_rows = 0;
+  cli->response_recv(num_flds);
+  if (check_hs_error("op_read_recv", 0) != 0) { return 1; }
+  const string_ref *row = cli->get_next_row();
+  std::string rrec[4];
+  if (row != 0 && num_flds == 4) {
+    for (int i = 0; i < 4; ++i) {
+      rrec[i] = to_string(row[i]);
+    }
+    ++num_rows;
+  }
+  row = cli->get_next_row();
+  if (row != 0) {
+    ++num_rows;
+  }
+  cli->response_buf_remove();
+  return verify_read(k, num_rows, num_flds, rrec, rec);
+}
+
+int
+hs_longrun_thread_hs::op_readnolock(int key)
+{
+  const std::string k = to_stdstring(key);
+  const string_ref op_ref("=", 1);
+  const string_ref op_args[1] = {
+    to_string_ref(k),
+  };
+  cli->request_buf_exec_generic(0, op_ref, op_args, 1, 1, 0,
+    string_ref(), 0, 0, 0, 0);
+  cli->request_send();
+  if (check_hs_error("op_read_send", 0) != 0) { return 1; }
+  size_t num_flds = 0;
+  size_t num_rows = 0;
+  cli->response_recv(num_flds);
+  if (check_hs_error("op_read_recv", 0) != 0) { return 1; }
+  const string_ref *row = cli->get_next_row();
+  std::string rrec[4];
+  if (row != 0 && num_flds == 4) {
+    for (int i = 0; i < 4; ++i) {
+      rrec[i] = to_string(row[i]);
+    }
+    ++num_rows;
+  }
+  row = cli->get_next_row();
+  if (row != 0) {
+    ++num_rows;
+  }
+  cli->response_buf_remove();
+  return verify_readnolock(k, num_rows, num_flds, rrec);
+}
+
+int
+hs_longrun_thread_hs::check_hs_error(const char *mess, record_value *rec)
+{
+  const int err = cli->get_error_code();
+  if (err == 0) {
+    return 0;
+  }
+  ++stat.runtime_error_count;
+  if (arg.sh.verbose > 0) {
+    const std::string estr = cli->get_error();
+    fprintf(stderr, "RUNTIME_ERROR: op=%c wid=%d %s: %d %s\n",
+      arg.op, arg.id, mess, err, estr.c_str());
+  }
+  if (rec) {
+    rec->unknown_state = true;
+  }
+  return 1;
+}
+
+struct hs_longrun_thread_my : public hs_longrun_thread_base {
+  hs_longrun_thread_my(const arg_type& arg)
+    : hs_longrun_thread_base(arg), connected(false) { }
+  void run();
+  void show_mysql_error(const char *mess, record_value *rec);
+  int op_insert(record_value& rec);
+  int op_delete(record_value& rec);
+  int op_update(record_value& rec);
+  int op_delins(record_value& rec);
+  int op_read(record_value& rec);
+  auto_mysql db;
+  bool connected;
+};
+
+void
+hs_longrun_thread_my::run()
+{
+  const std::string mysql_host = arg.sh.conf.get_str("host", "localhost");
+  const std::string mysql_user = arg.sh.conf.get_str("mysqluser", "root");
+  const std::string mysql_passwd = arg.sh.conf.get_str("mysqlpass", "");
+  const std::string mysql_dbname = "hstestdb";
+
+  while (arg.sh.running) {
+    if (!connected) {
+      if (!mysql_real_connect(db, mysql_host.c_str(), mysql_user.c_str(),
+	mysql_passwd.c_str(), mysql_dbname.c_str(), mysql_port, 0, 0)) {
+	show_mysql_error("mysql_real_connect", 0);
+	continue;
+      }
+    }
+    connected = true;
+    const size_t rec_id = rand_record();
+    record_value& rec = *arg.sh.records[rec_id];
+    lock_guard g(rec.lock);
+    int e = 0;
+    switch (arg.op) {
+    #if 0
+    case 'I':
+      e = op_insert(rec);
+      break;
+    case 'D':
+      e = op_delete(rec);
+      break;
+    case 'U':
+      e = op_update(rec);
+      break;
+    #endif
+    case 'T':
+      e = op_delins(rec);
+      break;
+    case 'R':
+      e = op_read(rec);
+      break;
+    default:
+      break;
+    }
+  }
+}
+
+int
+hs_longrun_thread_my::op_delins(record_value& rec)
+{
+  const std::string k = rec.key;
+  const std::string v1 = "div1_" + k + "_" + to_stdstring(arg.id);
+  const std::string v2 = "div2_" + k + "_" + to_stdstring(arg.id);
+  const std::string v3 = "div3_" + k + "_" + to_stdstring(arg.id);
+  int success = 0;
+  bool cur_unknown_state = false;
+  do {
+    char query[1024];
+    #if 1
+    if (mysql_query(db, "begin") != 0) {
+      if (arg.sh.verbose >= 20) {
+	fprintf(stderr, "mysql: e=[%s] q=[%s]\n", mysql_error(db), "begin");
+      }
+      break;
+    }
+    #endif
+    cur_unknown_state = true;
+    snprintf(query, 1024,
+      "delete from hstesttbl where k = '%s'", k.c_str());
+    if (mysql_query(db, query) != 0) {
+      if (arg.sh.verbose >= 20) {
+	fprintf(stderr, "mysql: e=[%s] q=[%s]\n", mysql_error(db), query);
+      }
+      break;
+    }
+    if (mysql_affected_rows(db) != 1) {
+      if (arg.sh.verbose >= 20) {
+	fprintf(stderr, "mysql: notfound: [%s]\n", query);
+      }
+      break;
+    }
+    snprintf(query, 1024,
+      "insert into hstesttbl values ('%s', '%s', '%s', '%s')",
+      k.c_str(), v1.c_str(), v2.c_str(), v3.c_str());
+    if (mysql_query(db, query) != 0) {
+      if (arg.sh.verbose >= 20) {
+	fprintf(stderr, "mysql: e=[%s] q=[%s]\n", mysql_error(db), query);
+      }
+      break;
+    }
+    #if 1
+    if (mysql_query(db, "commit") != 0) {
+      if (arg.sh.verbose >= 20) {
+	fprintf(stderr, "mysql: e=[%s] q=[%s]\n", mysql_error(db), "commit");
+      }
+      break;
+    }
+    #endif
+    success = true;
+    cur_unknown_state = false;
+  } while (false);
+  return verify_update(k, v1, v2, v3, rec, (success != 0), cur_unknown_state);
+}
+
+int
+hs_longrun_thread_my::op_read(record_value& rec)
+{
+  const std::string k = rec.key;
+  char query[1024] = { 0 };
+  const int len = snprintf(query, 1024,
+    "select k,v1,v2,v3 from hstesttbl where k='%s'", k.c_str());
+  const int r = mysql_real_query(db, query, len > 0 ? len : 0);
+  if (r != 0) {
+    show_mysql_error(query, 0);
+    return 1;
+  }
+  MYSQL_ROW row = 0;
+  unsigned long *lengths = 0;
+  unsigned int num_rows = 0;
+  unsigned int num_flds = 0;
+  auto_mysql_res res(db);
+  std::string rrec[4];
+  if (res != 0) {
+    num_flds = mysql_num_fields(res);
+    row = mysql_fetch_row(res);
+    if (row != 0) {
+      lengths = mysql_fetch_lengths(res);
+      if (num_flds == 4) {
+	for (int i = 0; i < 4; ++i) {
+	  rrec[i] = std::string(row[i], lengths[i]);
+	}
+      }
+      ++num_rows;
+      row = mysql_fetch_row(res);
+      if (row != 0) {
+	++num_rows;
+      }
+    }
+  }
+  return verify_read(k, num_rows, num_flds, rrec, rec);
+}
+
+void
+hs_longrun_thread_my::show_mysql_error(const char *mess, record_value *rec)
+{
+  ++stat.runtime_error_count;
+  if (arg.sh.verbose > 0) {
+    fprintf(stderr, "RUNTIME_ERROR: op=%c wid=%d [%s]: %s\n",
+      arg.op, arg.id, mess, mysql_error(db));
+  }
+  if (rec) {
+    rec->unknown_state = true;
+  }
+  db.reset();
+  connected = false;
+}
+
+void
+mysql_do(MYSQL *db, const char *query)
+{
+  if (mysql_real_query(db, query, strlen(query)) != 0) {
+    fprintf(stderr, "mysql: e=[%s] q=[%s]\n", mysql_error(db), query);
+    fatal_abort("mysql_do");
+  }
+}
+
+void
+hs_longrun_init_table(const config& conf, int num_prepare,
+  hs_longrun_shared& shared)
+{
+  const std::string mysql_host = conf.get_str("host", "localhost");
+  const std::string mysql_user = conf.get_str("mysqluser", "root");
+  const std::string mysql_passwd = conf.get_str("mysqlpass", "");
+  const std::string mysql_dbname = "";
+  auto_mysql db;
+  if (!mysql_real_connect(db, mysql_host.c_str(), mysql_user.c_str(),
+    mysql_passwd.c_str(), mysql_dbname.c_str(), mysql_port, 0, 0)) {
+    fprintf(stderr, "mysql: error=[%s]\n", mysql_error(db));
+    fatal_abort("hs_longrun_init_table");
+  }
+  mysql_do(db, "drop database if exists hstestdb");
+  mysql_do(db, "create database hstestdb");
+  mysql_do(db, "use hstestdb");
+  mysql_do(db,
+    "create table hstesttbl ("
+    "k int primary key,"
+    "v1 varchar(32) not null,"
+    "v2 varchar(32) not null,"
+    "v3 varchar(32) not null"
+    ") character set utf8 collate utf8_bin engine = innodb");
+  for (int i = 0; i < num_prepare; ++i) {
+    const std::string i_str = to_stdstring(i);
+    const std::string v1 = "pv1_" + i_str;
+    const std::string v2 = "pv2_" + i_str;
+    const std::string v3 = "pv3_" + i_str;
+    char buf[1024];
+    snprintf(buf, 1024, "insert into hstesttbl(k, v1, v2, v3) values"
+      "(%d, '%s', '%s', '%s')", i, v1.c_str(), v2.c_str(), v3.c_str());
+    mysql_do(db, buf);
+    record_value *rec = shared.records[i];
+    rec->key = i_str;
+    rec->values.resize(4);
+    rec->values[0] = i_str;
+    rec->values[1] = v1;
+    rec->values[2] = v2;
+    rec->values[3] = v3;
+    rec->deleted = false;
+  }
+}
+
+int
+hs_longrun_main(int argc, char **argv)
+{
+  hs_longrun_shared shared;
+  parse_args(argc, argv, shared.conf);
+  shared.conf["host"] = shared.conf.get_str("host", "localhost");
+  shared.verbose = shared.conf.get_int("verbose", 1);
+  const int table_size = shared.conf.get_int("table_size", 10000);
+  for (int i = 0; i < table_size; ++i) {
+    std::auto_ptr<record_value> rec(new record_value());
+    rec->key = to_stdstring(i);
+    shared.records.push_back_ptr(rec);
+  }
+  mysql_library_init(0, 0, 0);
+  const int duration = shared.conf.get_int("duration", 10);
+  const int num_hsinsert = shared.conf.get_int("num_hsinsert", 10);
+  const int num_hsdelete = shared.conf.get_int("num_hsdelete", 10);
+  const int num_hsupdate = shared.conf.get_int("num_hsupdate", 10);
+  const int num_hsread = shared.conf.get_int("num_hsread", 10);
+  const int num_myread = shared.conf.get_int("num_myread", 10);
+  const int num_mydelins = shared.conf.get_int("num_mydelins", 10);
+  int num_hsreadnolock = shared.conf.get_int("num_hsreadnolock", 10);
+  const bool always_filled = (num_hsinsert == 0 && num_hsdelete == 0);
+  if (!always_filled) {
+    num_hsreadnolock = 0;
+  }
+  hs_longrun_init_table(shared.conf, always_filled ? table_size : 0,
+    shared);
+  /* create worker threads */
+  static const struct thrtmpl_type {
+    const char *type; char op; int num; int hs; int lock;
+  } thrtmpl[] = {
+    { "hsinsert", 'I', num_hsinsert, 1, 1 },
+    { "hsdelete", 'D', num_hsdelete, 1, 1 },
+    { "hsupdate", 'U', num_hsupdate, 1, 1 },
+    { "hsread", 'R', num_hsread, 1, 1 },
+    { "hsreadnolock", 'N', num_hsreadnolock, 1, 0 },
+    { "myread", 'R', num_myread, 0, 1 },
+    { "mydelins", 'T', num_mydelins, 0, 1 },
+  };
+  typedef auto_ptrcontainer< std::vector<hs_longrun_thread_base *> > thrs_type;
+  thrs_type thrs;
+  for (size_t i = 0; i < sizeof(thrtmpl)/sizeof(thrtmpl[0]); ++i) {
+    const thrtmpl_type& e = thrtmpl[i];
+    for (int j = 0; j < e.num; ++j) {
+      int id = thrs.size();
+      const hs_longrun_thread_hs::arg_type arg(id, e.type, e.op, e.lock,
+	shared);
+      std::auto_ptr<hs_longrun_thread_base> thr;
+      if (e.hs) {
+      	thr.reset(new hs_longrun_thread_hs(arg));
+      } else {
+	thr.reset(new hs_longrun_thread_my(arg));
+      }
+      thrs.push_back_ptr(thr);
+    }
+  }
+  shared.num_threads = thrs.size();
+  /* start threads */
+  fprintf(stderr, "START\n");
+  shared.running = 1;
+  for (size_t i = 0; i < thrs.size(); ++i) {
+    thrs[i]->start();
+  }
+  /* wait */
+  sleep(duration);
+  /* stop thread */
+  shared.running = 0;
+  for (size_t i = 0; i < thrs.size(); ++i) {
+    thrs[i]->join();
+  }
+  fprintf(stderr, "DONE\n");
+  /* summary */
+  typedef std::map<std::string, hs_longrun_stat> stat_map;
+  stat_map sm;
+  for (size_t i = 0; i < thrs.size(); ++i) {
+    hs_longrun_thread_base *const thr = thrs[i];
+    const std::string wt = thr->arg.worker_type;
+    hs_longrun_stat& v = sm[wt];
+    v.add(thr->stat);
+  }
+  hs_longrun_stat total;
+  for (stat_map::const_iterator i = sm.begin(); i != sm.end(); ++i) {
+    if (i->second.verify_error_count != 0) {
+      fprintf(stderr, "%s verify_error %llu\n", i->first.c_str(),
+	i->second.verify_error_count);
+    }
+    if (i->second.runtime_error_count) {
+      fprintf(stderr, "%s runtime_error %llu\n", i->first.c_str(),
+	i->second.runtime_error_count);
+    }
+    if (i->second.unknown_count) {
+      fprintf(stderr, "%s unknown %llu\n", i->first.c_str(),
+	i->second.unknown_count);
+    }
+    fprintf(stderr, "%s success %llu\n", i->first.c_str(),
+      i->second.success_count);
+    total.add(i->second);
+  }
+  if (total.verify_error_count != 0) {
+    fprintf(stderr, "TOTAL verify_error %llu\n", total.verify_error_count);
+  }
+  if (total.runtime_error_count != 0) {
+    fprintf(stderr, "TOTAL runtime_error %llu\n", total.runtime_error_count);
+  }
+  if (total.unknown_count != 0) {
+    fprintf(stderr, "TOTAL unknown %llu\n", total.unknown_count);
+  }
+  fprintf(stderr, "TOTAL success %llu\n", total.success_count);
+  mysql_library_end();
+  return 0;
+}
+
+};
+
+int
+main(int argc, char **argv)
+{
+  return dena::hs_longrun_main(argc, argv);
+}
+
diff --git a/plugin/handler_socket/client/hspool_test.pl b/plugin/handler_socket/client/hspool_test.pl
new file mode 100755
index 00000000..03227e31
--- /dev/null
+++ b/plugin/handler_socket/client/hspool_test.pl
@@ -0,0 +1,224 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+use DB::HandlerSocket::Pool;
+use DBI;
+
+my %conf = ();
+for my $i (@ARGV) {
+	my ($k, $v) = split(/=/, $i);
+	$conf{$k} = $v;
+}
+
+my $verbose = get_conf("verbose", 0);
+my $actions_str = get_conf("actions",
+	"create,insert,verify,verify2,verify3,verify4,clean");
+my $tablesize = get_conf("tablesize", 1000);
+my $db = get_conf("db", "hstestdb");
+my $table = get_conf("table", "testtbl");
+my $table_schema = get_conf("table_schema", undef);
+my $engine = get_conf("engine", "innodb");
+my $host = get_conf("host", "localhost");
+my $mysqlport = get_conf("mysqlport", 3306);
+my $hsport_rd = get_conf("hsport_rd", 9998);
+my $hsport_wr = get_conf("hsport_wr", 9999);
+my $loop = get_conf("loop", 10000);
+my $op = get_conf("op", "=");
+my $ssps = get_conf("ssps", 0);
+my $num_moreflds = get_conf("moreflds", 0);
+my $moreflds_prefix = get_conf("moreflds_prefix", "f");
+my $mysql_user = 'root';
+my $mysql_password = '';
+
+my $dsn = "DBI:MariaDB:database=;host=$host;port=$mysqlport"
+        . ";mariadb_server_prepare=$ssps";
+my $dbh = DBI->connect($dsn, $mysql_user, $mysql_password,
+	{ RaiseError => 1 });
+my $hsargs = { 'host' => $host, 'port' => $hsport_rd };
+my $hspool = new DB::HandlerSocket::Pool({
+	hostmap => {
+		"$db.$table" => {
+			host => $host,
+			port => $hsport_rd,
+		},
+	},
+	resolve => undef,
+	error => undef,
+});
+$table_schema = "(k int primary key, fc30 varchar(30), ft text)"
+	if (!defined($table_schema));
+
+my @actions = split(/,/, $actions_str);
+for my $action (@actions) {
+	print "ACTION: $action\n";
+	eval "hstest_$action()";
+	if ($@) {
+		die $@;
+	}
+	print "ACTION: $action DONE\n";
+}
+
+sub get_conf {
+	my ($key, $def) = @_;
+	my $val = $conf{$key};
+	if ($val) {
+		print "$key=$val\n";
+	} else {
+		$val = $def;
+		my $defstr = $def || "(undef)";
+		print "$key=$defstr(default)\n";
+	}
+	return $val;
+}
+
+sub hstest_create {
+	$dbh->do("drop database if exists $db");
+	$dbh->do("create database $db");
+	$dbh->do("use $db");
+	$dbh->do("create table $table $table_schema engine=$engine");
+}
+
+sub hstest_dump {
+	$dbh->do("use $db");
+	my $sth = $dbh->prepare("select * from $table");
+	$sth->execute();
+	my $arr = $sth->fetchall_arrayref();
+	for my $rec (@$arr) {
+		print "REC:";
+		for my $row (@$rec) {
+			print " $row";
+		}
+		print "\n";
+	}
+}
+
+sub hstest_insert {
+	$dbh->do("use $db");
+	my $sth = $dbh->prepare("insert into $table values (?, ?, ?)");
+	for (my $k = 0; $k < $tablesize; ++$k) {
+		my $fc30 = "fc30_$k";
+		my $ft = "ft_$k";
+		$sth->execute($k, $fc30, $ft);
+	}
+}
+
+sub hstest_verify {
+	$dbh->do("use $db");
+	my $sth = $dbh->prepare("select * from $table order by k");
+	$sth->execute();
+	my $arr = $sth->fetchall_arrayref();
+	my $hsres = $hspool->index_find($db, $table, "PRIMARY", "k,fc30,ft",
+		">=", [ 0 ], $tablesize, 0);
+	for (my $i = 0; $i < $tablesize; ++$i) {
+		my $rec = $arr->[$i];
+		my $differ = 0;
+		print "REC:" if $verbose;
+		for (my $j = 0; $j < 3; ++$j) {
+			my $fld = $rec->[$j];
+			my $hsidx = $i * 3 + $j;
+			my $hsfld = $hsres->[$hsidx];
+			if ($hsfld ne $fld) {
+				$differ = 1;
+			}
+			if ($differ) {
+				print " $fld:$hsfld" if $verbose;
+			} else {
+				print " $hsfld" if $verbose;
+			}
+		}
+		print "\n" if $verbose;
+		if ($differ) {
+			die "verification failed";
+		}
+	}
+}
+
+sub hstest_verify2 {
+	$dbh->do("use $db");
+	my $sth = $dbh->prepare("select * from $table order by k");
+	$sth->execute();
+	my $arr = $sth->fetchall_arrayref();
+	my $hsresa = $hspool->index_find_multi($db, $table, "PRIMARY",
+		"k,fc30,ft", [ [ -1, ">=", [ 0 ], $tablesize, 0 ] ]);
+	my $hsres = $hsresa->[0];
+	for (my $i = 0; $i < $tablesize; ++$i) {
+		my $rec = $arr->[$i];
+		my $differ = 0;
+		print "REC:" if $verbose;
+		for (my $j = 0; $j < 3; ++$j) {
+			my $fld = $rec->[$j];
+			my $hsidx = $i * 3 + $j;
+			my $hsfld = $hsres->[$hsidx];
+			if ($hsfld ne $fld) {
+				$differ = 1;
+			}
+			if ($differ) {
+				print " $fld:$hsfld" if $verbose;
+			} else {
+				print " $hsfld" if $verbose;
+			}
+		}
+		print "\n" if $verbose;
+		if ($differ) {
+			die "verification failed";
+		}
+	}
+}
+
+sub hashref_to_str {
+	my $href = $_[0];
+	my $r = '';
+	for my $k (sort keys %$href) {
+		my $v = $href->{$k};
+		$r .= "($k=>$v)";
+	}
+	return $r;
+}
+
+sub hstest_verify3 {
+	$dbh->do("use $db");
+	my $sth = $dbh->prepare("select * from $table order by k");
+	$sth->execute();
+	my $hsres_t = $hspool->index_find($db, $table, "PRIMARY", "k,fc30,ft",
+			">=", [ 0 ], $tablesize, 0);
+	my $hsres = DB::HandlerSocket::Pool::result_single_to_hasharr(
+		[ 'k', 'fc30', 'ft' ], $hsres_t);
+	for (my $i = 0; $i < $tablesize; ++$i) {
+		my $mystr = hashref_to_str($sth->fetchrow_hashref());
+		my $hsstr = hashref_to_str($hsres->[$i]);
+		if ($mystr ne $hsstr) {
+			print "DIFF my=[$mystr] hs=[$hsstr]\n" if $verbose;
+			die "verification failed";
+		} else {
+			print "OK $hsstr\n" if $verbose;
+		}
+	}
+}
+
+sub hstest_verify4 {
+	$dbh->do("use $db");
+	my $sth = $dbh->prepare("select * from $table order by k");
+	$sth->execute();
+	my $hsres_t = $hspool->index_find($db, $table, "PRIMARY", "k,fc30,ft",
+			">=", [ 0 ], $tablesize, 0);
+	my $hsres = DB::HandlerSocket::Pool::result_single_to_hashhash(
+		[ 'k', 'fc30', 'ft' ], 'k', $hsres_t);
+	my $rechash = $sth->fetchall_hashref('k');
+	while (my ($k, $href) = each (%$rechash)) {
+		my $mystr = hashref_to_str($href);
+		my $hsstr = hashref_to_str($hsres->{$k});
+		if ($mystr ne $hsstr) {
+			print "DIFF my=[$mystr] hs=[$hsstr]\n" if $verbose;
+			die "verification failed";
+		} else {
+			print "OK $hsstr\n" if $verbose;
+		}
+	}
+}
+
+sub hstest_clean {
+	$hspool->clear_pool();
+	$dbh->do("drop database if exists $db");
+}
+
diff --git a/plugin/handler_socket/client/hstest.cpp b/plugin/handler_socket/client/hstest.cpp
new file mode 100644
index 00000000..b5551fed
--- /dev/null
+++ b/plugin/handler_socket/client/hstest.cpp
@@ -0,0 +1,1532 @@
+
+// vim:sw=2:ai
+
+#include <signal.h>
+#include <sys/time.h>
+#include <stdio.h>
+#include <string.h>
+#include <vector>
+#include <stdlib.h>
+#include <memory>
+#include <errno.h>
+#include <mysql.h>
+#include <time.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include "util.hpp"
+#include "auto_ptrcontainer.hpp"
+#include "socket.hpp"
+#include "thread.hpp"
+#include "hstcpcli.hpp"
+
+#if __GNUC__ >= 4
+long atomic_exchange_and_add(volatile long *valp, long c)
+{
+  return __sync_fetch_and_add(valp, c);
+}
+#else
+#include <bits/atomicity.h>
+using namespace __gnu_cxx;
+long atomic_exchange_and_add(volatile long *valp, long c)
+{
+  return __exchange_and_add((volatile _Atomic_word *)valp, c);
+}
+#endif
+
+namespace dena {
+
+struct auto_mysql : private noncopyable {
+  auto_mysql() : db(0) {
+    reset();
+  }
+  ~auto_mysql() {
+    if (db) {
+      mysql_close(db);
+    }
+  }
+  void reset() {
+    if (db) {
+      mysql_close(db);
+    }
+    if ((db = mysql_init(0)) == 0) {
+      fatal_abort("failed to initialize mysql client");
+    }
+  }
+  operator MYSQL *() const { return db; }
+ private:
+  MYSQL *db;
+};
+
+struct auto_mysql_res : private noncopyable {
+  auto_mysql_res(MYSQL *db) {
+    res = mysql_store_result(db);
+  }
+  ~auto_mysql_res() {
+    if (res) {
+      mysql_free_result(res);
+    }
+  }
+  operator MYSQL_RES *() const { return res; }
+ private:
+  MYSQL_RES *res;
+};
+
+struct auto_mysql_stmt : private noncopyable {
+  auto_mysql_stmt(MYSQL *db) {
+    stmt = mysql_stmt_init(db);
+  }
+  ~auto_mysql_stmt() {
+    if (stmt) {
+      mysql_stmt_close(stmt);
+    }
+  }
+  operator MYSQL_STMT *() const { return stmt; }
+ private:
+  MYSQL_STMT *stmt;
+};
+
+namespace {
+
+double
+gettimeofday_double()
+{
+  struct timeval tv;
+  if (gettimeofday(&tv, 0) != 0) {
+    fatal_abort("gettimeofday");
+  }
+  return static_cast<double>(tv.tv_usec) / 1000000 + tv.tv_sec;
+}
+
+// unused
+void
+wait_close(int fd)
+{
+  char buf[1024];
+  while (true) {
+    int r = read(fd, buf, sizeof(buf));
+    if (r <= 0) {
+      break;
+    }
+  }
+}
+
+// unused
+void
+gentle_close(int fd)
+{
+  int r = shutdown(fd, SHUT_WR);
+  if (r != 0) {
+    return;
+  }
+  wait_close(fd);
+}
+
+};
+
+struct hstest_shared {
+  config conf;
+  socket_args arg;
+  int verbose;
+  size_t loop;
+  size_t pipe;
+  char op;
+  long num_threads;
+  mutable volatile long count;
+  mutable volatile long conn_count;
+  long wait_conn;
+  volatile char *keygen;
+  long keygen_size;
+  mutable volatile int enable_timing;
+  int usleep;
+  int dump;
+  hstest_shared() : verbose(0), loop(0), pipe(0), op('G'), num_threads(0),
+    count(0), conn_count(0), wait_conn(0), keygen(0), keygen_size(0),
+    enable_timing(0), usleep(0), dump(0) { }
+  void increment_count(unsigned int c = 1) const volatile {
+    atomic_exchange_and_add(&count, c);
+  }
+  void increment_conn(unsigned int c) const volatile {
+    atomic_exchange_and_add(&conn_count, c);
+    while (wait_conn != 0 && conn_count < wait_conn) {
+      sleep(1);
+    }
+    // fprintf(stderr, "wait_conn=%ld done\n", wait_conn);
+  }
+};
+
+struct hstest_thread {
+  struct arg_type {
+    size_t id;
+    const hstest_shared& sh;
+    bool watch_flag;
+    arg_type(size_t i, const hstest_shared& s, bool w)
+      : id(i), sh(s), watch_flag(w) { }
+  };
+  hstest_thread(const arg_type& a) : arg(a), io_success_count(0),
+    op_success_count(0), response_min(99999), response_max(0),
+    response_sum(0), response_avg(0) { }
+  void operator ()();
+  void test_1();
+  void test_2_3(int test_num);
+  void test_4_5(int test_num);
+  void test_6(int test_num);
+  void test_7(int test_num);
+  void test_8(int test_num);
+  void test_9(int test_num);
+  void test_10(int test_num);
+  void test_11(int test_num);
+  void test_12(int test_num);
+  void test_21(int test_num);
+  void test_22(int test_num);
+  void test_watch();
+  void sleep_if();
+  void set_timing(double time_spent);
+  arg_type arg;
+  auto_file fd;
+  size_t io_success_count;
+  size_t op_success_count;
+  double response_min, response_max, response_sum, response_avg;
+};
+
+void
+hstest_thread::test_1()
+{
+  char buf[1024];
+  unsigned int seed = arg.id;
+  seed ^= arg.sh.conf.get_int("seed_xor", 0);
+  std::string err;
+  if (socket_connect(fd, arg.sh.arg, err) != 0) {
+    fprintf(stderr, "connect: %d %s\n", errno, strerror(errno));
+    return;
+  }
+  const char op = arg.sh.op;
+  const int tablesize = arg.sh.conf.get_int("tablesize", 0);
+  for (size_t i = 0; i < arg.sh.loop; ++i) {
+    for (size_t j = 0; j < arg.sh.pipe; ++j) {
+      int k = 0, v = 0, len = 0;
+      if (op == 'G') {
+	k = rand_r(&seed);
+	v = rand_r(&seed); /* unused */
+	if (tablesize != 0) {
+	  k &= tablesize;
+	}
+	len = snprintf(buf, sizeof(buf), "%c\tk%d\n", op, k);
+      } else {
+	k = rand_r(&seed);
+	v = rand_r(&seed);
+	if (tablesize != 0) {
+	  k &= tablesize;
+	}
+	len = snprintf(buf, sizeof(buf), "%c\tk%d\tv%d\n", op, k, v);
+      }
+      const int wlen = write(fd.get(), buf, len);
+      if (wlen != len) {
+	return;
+      }
+    }
+    size_t read_cnt = 0;
+    size_t read_pos = 0;
+    while (read_cnt < arg.sh.pipe) {
+      const int rlen = read(fd.get(), buf + read_pos, sizeof(buf) - read_pos);
+      if (rlen <= 0) {
+	return;
+      }
+      read_pos += rlen;
+      while (true) {
+	const char *const p = static_cast<const char *>(memchr(buf, '\n',
+	  read_pos));
+	if (p == 0) {
+	  break;
+	}
+	++read_cnt;
+	++io_success_count;
+	arg.sh.increment_count();
+	if (p != buf && buf[0] == '=') {
+	  ++op_success_count;
+	}
+	const size_t rest_size = buf + read_pos - (p + 1);
+	if (rest_size != 0) {
+	  memmove(buf, p + 1, rest_size);
+	}
+	read_pos = rest_size;
+      }
+    }
+  }
+}
+
+void
+hstest_thread::test_2_3(int test_num)
+{
+#if 0
+  char buf_k[128], buf_v[128];
+  unsigned int seed = arg.id;
+  op_base_t op = static_cast<op_base_t>(arg.sh.op);
+  micli_ptr hnd;
+  if (test_num == 2) {
+    hnd = micli_i::create_remote(arg.sh.conf);
+  } else if (test_num == 3) {
+    // hnd = micli_i::create_inproc(arg.sh.localdb);
+  }
+  if (hnd.get() == 0) {
+    return;
+  }
+  for (size_t i = 0; i < arg.sh.loop; ++i) {
+    for (size_t j = 0; j < arg.sh.pipe; ++j) {
+      int k = 0, v = 0, klen = 0, vlen = 0;
+      k = rand_r(&seed);
+      klen = snprintf(buf_k, sizeof(buf_k), "k%d", k);
+      v = rand_r(&seed); /* unused */
+      vlen = snprintf(buf_v, sizeof(buf_v), "v%d", v);
+      string_ref arr[2];
+      arr[0] = string_ref(buf_k, klen);
+      arr[1] = string_ref(buf_v, vlen);
+      pstrarr_ptr rec(arr, 2);
+      if (hnd->execute(op, 0, 0, rec.get_const())) {
+	++io_success_count;
+	arg.sh.increment_count();
+	const dataset& res = hnd->get_result_ref();
+	if (res.size() == 1) {
+	  ++op_success_count;
+	}
+      }
+    }
+  }
+#endif
+}
+
+void
+hstest_thread::test_4_5(int test_num)
+{
+#if 0
+  char buf_k[128], buf_v[8192];
+  memset(buf_v, ' ', sizeof(buf_v));
+  unsigned int seed = arg.id;
+  op_base_t op = static_cast<op_base_t>(arg.sh.op);
+  micli_ptr hnd;
+  if (test_num == 4) {
+    hnd = micli_i::create_remote(arg.sh.conf);
+  } else if (test_num == 5) {
+    hnd = micli_i::create_inproc(arg.sh.localdb);
+  }
+  if (hnd.get() == 0) {
+    return;
+  }
+  for (size_t i = 0; i < arg.sh.loop; ++i) {
+    for (size_t j = 0; j < arg.sh.pipe; ++j) {
+      int k = 0, klen = 0, vlen = 0;
+      k = i & 0x0000ffffUL;
+      if (k == 0) {
+	fprintf(stderr, "k=0\n");
+      }
+      klen = snprintf(buf_k, sizeof(buf_k), "k%d", k);
+      vlen = rand_r(&seed) % 8192;
+      string_ref arr[2];
+      arr[0] = string_ref(buf_k, klen);
+      arr[1] = string_ref(buf_v, vlen);
+      pstrarr_ptr rec(arr, 2);
+      if (hnd->execute(op, 0, 0, rec.get_const())) {
+	++io_success_count;
+	const dataset& res = hnd->get_result_ref();
+	if (res.size() == 1) {
+	  ++op_success_count;
+	}
+      }
+    }
+  }
+#endif
+}
+
+void
+hstest_thread::test_6(int test_num)
+{
+  int count = arg.sh.conf.get_int("count", 1);
+  auto_file fds[count];
+  for (int i = 0; i < count; ++i) {
+    const double t1 = gettimeofday_double();
+    std::string err;
+    if (socket_connect(fds[i], arg.sh.arg, err) != 0) {
+      fprintf(stderr, "id=%zu i=%d err=%s\n", arg.id, i, err.c_str());
+    }
+    const double t2 = gettimeofday_double();
+    if (t2 - t1 > 1) {
+      fprintf(stderr, "id=%zu i=%d time %f\n", arg.id, i, t2 - t1);
+    }
+  }
+}
+
+void
+hstest_thread::test_7(int num)
+{
+  /*
+    set foo 0 0 10
+    0123456789
+    STORED
+    get foo
+    VALUE foo 0 10
+    0123456789
+    END
+    get var
+    END
+   */
+  char buf[1024];
+  const int keep_connection = arg.sh.conf.get_int("keep_connection", 1);
+  unsigned int seed = arg.id;
+  seed ^= arg.sh.conf.get_int("seed_xor", 0);
+  const int tablesize = arg.sh.conf.get_int("tablesize", 0);
+  const char op = arg.sh.op;
+  for (size_t i = 0; i < arg.sh.loop; ++i) {
+    const double tm1 = gettimeofday_double();
+    std::string err;
+    if (fd.get() < 0 && socket_connect(fd, arg.sh.arg, err) != 0) {
+      fprintf(stderr, "connect: %d %s\n", errno, strerror(errno));
+      return;
+    }
+    for (size_t j = 0; j < arg.sh.pipe; ++j) {
+      int k = 0, v = 0, len = 0;
+      if (op == 'G') {
+	k = rand_r(&seed);
+	v = rand_r(&seed); /* unused */
+	if (tablesize != 0) {
+	  k &= tablesize;
+	}
+	len = snprintf(buf, sizeof(buf), "get k%d\r\n", k);
+      } else {
+	k = rand_r(&seed);
+	v = rand_r(&seed);
+	if (tablesize != 0) {
+	  k &= tablesize;
+	}
+	char vbuf[1024];
+	int vlen = snprintf(vbuf, sizeof(vbuf),
+	  "v%d"
+	  // "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+	  // "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+	  // "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+	  // "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+	  // "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+	  , v);
+	len = snprintf(buf, sizeof(buf), "set k%d 0 0 %d\r\n%s\r\n",
+	  k, vlen, vbuf);
+      }
+      const int wlen = write(fd.get(), buf, len);
+      if (wlen != len) {
+	return;
+      }
+    }
+    size_t read_cnt = 0;
+    size_t read_pos = 0;
+    bool read_response_done = false;
+    bool expect_value = false;
+    while (!read_response_done) {
+      const int rlen = read(fd.get(), buf + read_pos, sizeof(buf) - read_pos);
+      if (rlen <= 0) {
+	return;
+      }
+      read_pos += rlen;
+      while (true) {
+	const char *const p = static_cast<const char *>(memchr(buf, '\n',
+	  read_pos));
+	if (p == 0) {
+	  break;
+	}
+	++read_cnt;
+	if (expect_value) {
+	  expect_value = false;
+	} else if (p >= buf + 6 && memcmp(buf, "VALUE ", 6) == 0) {
+	  expect_value = true;
+	  ++op_success_count;
+	} else {
+	  if (p == buf + 7 && memcmp(buf, "STORED\r", 7) == 0) {
+	    ++op_success_count;
+	  }
+	  read_response_done = true;
+	}
+	const size_t rest_size = buf + read_pos - (p + 1);
+	if (rest_size != 0) {
+	  memmove(buf, p + 1, rest_size);
+	}
+	read_pos = rest_size;
+      }
+      ++io_success_count;
+    }
+    arg.sh.increment_count();
+    if (!keep_connection) {
+      fd.close();
+    }
+    const double tm2 = gettimeofday_double();
+    set_timing(tm2 - tm1);
+    sleep_if();
+  }
+}
+
+struct rec {
+  std::string key;
+  std::string value;
+};
+
+void
+hstest_thread::test_8(int test_num)
+{
+#if 0
+  char buf_k[128], buf_v[128];
+  unsigned int seed = arg.id;
+  // op_base_t op = static_cast<op_base_t>(arg.sh.op);
+  using namespace boost::multi_index;
+  typedef member<rec, std::string, &rec::key> rec_get_key;
+  typedef ordered_unique<rec_get_key> oui;
+  typedef multi_index_container< rec, indexed_by<oui> > mic;
+  #if 0
+  typedef std::map<std::string, std::string> m_type;
+  m_type m;
+  #endif
+  mic m;
+  for (size_t i = 0; i < arg.sh.loop; ++i) {
+    for (size_t j = 0; j < arg.sh.pipe; ++j) {
+      int k = 0, v = 0, klen = 0, vlen = 0;
+      k = rand_r(&seed);
+      klen = snprintf(buf_k, sizeof(buf_k), "k%d", k);
+      v = rand_r(&seed); /* unused */
+      vlen = snprintf(buf_v, sizeof(buf_v), "v%d", v);
+      const std::string ks(buf_k, klen);
+      const std::string vs(buf_v, vlen);
+      rec r;
+      r.key = ks;
+      r.value = vs;
+      m.insert(r);
+      // m.insert(std::make_pair(ks, vs));
+      ++io_success_count;
+      ++op_success_count;
+      arg.sh.increment_count();
+    }
+  }
+#endif
+}
+
+struct mysqltest_thread_initobj : private noncopyable {
+  mysqltest_thread_initobj() {
+    mysql_thread_init();
+  }
+  ~mysqltest_thread_initobj() {
+    mysql_thread_end();
+  }
+};
+
+void
+hstest_thread::test_9(int test_num)
+{
+  /* create table hstest
+   * ( k varchar(255) not null, v varchar(255) not null, primary key(k))
+   * engine = innodb; */
+  auto_mysql db;
+  // mysqltest_thread_initobj initobj;
+  std::string err;
+  const char op = arg.sh.op;
+  const std::string suffix = arg.sh.conf.get_str("value_suffix", "upd");
+  unsigned long long err_cnt = 0;
+  unsigned long long query_cnt = 0;
+  #if 0
+  my_bool reconnect = 0;
+  if (mysql_options(db, MYSQL_OPT_RECONNECT, &reconnect) != 0) {
+    err = "mysql_options() failed";
+    ++err_cnt;
+    return;
+  }
+  #endif
+  unsigned int seed = time(0) + arg.id + 1;
+  seed ^= arg.sh.conf.get_int("seed_xor", 0);
+  drand48_data randbuf;
+  srand48_r(seed, &randbuf);
+  const std::string mysql_host = arg.sh.conf.get_str("host", "localhost");
+  const int mysql_port = arg.sh.conf.get_int("mysqlport", 3306);
+  const int num = arg.sh.loop;
+  const std::string mysql_user = arg.sh.conf.get_str("mysqluser", "root");
+  const std::string mysql_passwd = arg.sh.conf.get_str("mysqlpass", "");
+  const std::string mysql_dbname = arg.sh.conf.get_str("dbname", "hstest");
+  const int keep_connection = arg.sh.conf.get_int("keep_connection", 1);
+  const int verbose = arg.sh.conf.get_int("verbose", 1);
+  const int tablesize = arg.sh.conf.get_int("tablesize", 10000);
+  const int moreflds = arg.sh.conf.get_int("moreflds", 0);
+  const std::string moreflds_prefix = arg.sh.conf.get_str(
+    "moreflds_prefix", "column0123456789_");
+  const int use_handler = arg.sh.conf.get_int("handler", 0);
+  const int sched_flag = arg.sh.conf.get_int("sched", 0);
+  const int use_in = arg.sh.conf.get_int("in", 0);
+  const int ssps = use_in ? 0 : arg.sh.conf.get_int("ssps", 0);
+  std::string flds = "v";
+  for (int i = 0; i < moreflds; ++i) {
+    char buf[1024];
+    snprintf(buf, sizeof(buf), ",%s%d", moreflds_prefix.c_str(), i);
+    flds += std::string(buf);
+  }
+  int connected = 0;
+  std::auto_ptr<auto_mysql_stmt> stmt;
+  string_buffer wbuf;
+  for (int i = 0; i < num; ++i) {
+    const double tm1 = gettimeofday_double();
+    const int flags = 0;
+    if (connected == 0) {
+      if (!mysql_real_connect(db, mysql_host.c_str(),
+	mysql_user.c_str(), mysql_user.empty() ? 0 : mysql_passwd.c_str(),
+	mysql_dbname.c_str(), mysql_port, 0, flags)) {
+	err = "failed to connect: " + std::string(mysql_error(db));
+	if (verbose >= 1) {
+	  fprintf(stderr, "e=[%s]\n", err.c_str());
+	}
+	++err_cnt;
+	return;
+      }
+      arg.sh.increment_conn(1);
+    }
+    int r = 0;
+    if (connected == 0 && use_handler) {
+      const char *const q = "handler hstest_table1 open";
+      r = mysql_real_query(db, q, strlen(q));
+      if (r != 0) {
+	err = 1;
+      }
+    }
+    if (connected == 0 && ssps) {
+      stmt.reset(new auto_mysql_stmt(db));
+      const char *const q = "select v from hstest_table1 where k = ?";
+      r = mysql_stmt_prepare(*stmt, q, strlen(q));
+      if (r != 0) {
+	fprintf(stderr, "ssps err\n");
+	++err_cnt;
+	return;
+      }
+    }
+    connected = 1;
+    std::string result_str;
+    unsigned int err = 0;
+    unsigned int num_flds = 0, num_affected_rows = 0;
+    int got_data = 0;
+    char buf_query[16384];
+    int buf_query_len = 0;
+    int k = 0, v = 0;
+    {
+      double kf = 0, vf = 0;
+      drand48_r(&randbuf, &kf);
+      drand48_r(&randbuf, &vf);
+      k = int(kf * tablesize);
+      v = int(vf * tablesize);
+      #if 0
+      k = rand_r(&seed);
+      v = rand_r(&seed);
+      if (tablesize != 0) {
+	k %= tablesize;
+      }
+      #endif
+      if (op == 'G') {
+	if (use_handler) {
+	  buf_query_len = snprintf(buf_query, sizeof(buf_query),
+	    "handler hstest_table1 read `primary` = ( '%d' )", k);
+	    // TODO: moreflds
+	} else if (ssps) {
+	    //
+	} else if (use_in) {
+	  wbuf.clear();
+	  char *p = wbuf.make_space(1024);
+	  int len = snprintf(p, 1024, "select %s from hstest_table1 where k in ('%d'", flds.c_str(), k);
+	  wbuf.space_wrote(len);
+	  for (int j = 1; j < use_in; ++j) {
+	    /* generate more key */
+	    drand48_r(&randbuf, &kf);
+	    k = int(kf * tablesize);
+	    p = wbuf.make_space(1024);
+	    int len = snprintf(p, 1024, ", '%d'", k);
+	    wbuf.space_wrote(len);
+	  }
+	  wbuf.append_literal(")");
+	} else {
+	  buf_query_len = snprintf(buf_query, sizeof(buf_query),
+	    "select %s from hstest_table1 where k = '%d'", flds.c_str(), k);
+	}
+      } else if (op == 'U') {
+	buf_query_len = snprintf(buf_query, sizeof(buf_query),
+	  "update hstest_table1 set v = '%d_%d%s' where k = '%d'",
+	    v, k, suffix.c_str(), k);
+      } else if (op == 'R') {
+	buf_query_len = snprintf(buf_query, sizeof(buf_query),
+	  "replace into hstest_table1 values ('%d', 'v%d')", k, v);
+	  // TODO: moreflds
+      }
+    }
+    if (r == 0) {
+      if (ssps) {
+	MYSQL_BIND bind[1] = { };
+	bind[0].buffer_type = MYSQL_TYPE_LONG;
+	bind[0].buffer = (char *)&k;
+	bind[0].is_null = 0;
+	bind[0].length = 0;
+	if (mysql_stmt_bind_param(*stmt, bind)) {
+	  fprintf(stderr, "err: %s\n", mysql_stmt_error(*stmt));
+	  ++err_cnt;
+	  return;
+	}
+	r = mysql_stmt_execute(*stmt);
+	// fprintf(stderr, "stmt exec\n");
+      } else if (use_in) {
+	r = mysql_real_query(db, wbuf.begin(), wbuf.size());
+      } else {
+	r = mysql_real_query(db, buf_query, buf_query_len);
+	// fprintf(stderr, "real query\n");
+      }
+      ++query_cnt;
+    }
+    if (r != 0) {
+      err = 1;
+    } else if (ssps) {
+      if (verbose >= 0) {
+	char resbuf[1024];
+	unsigned long res_len = 0;
+	MYSQL_BIND bind[1] = { };
+	bind[0].buffer_type = MYSQL_TYPE_STRING;
+	bind[0].buffer = resbuf;
+	bind[0].buffer_length = sizeof(resbuf);
+	bind[0].length = &res_len;
+	if (mysql_stmt_bind_result(*stmt, bind)) {
+	  fprintf(stderr, "err: %s\n", mysql_stmt_error(*stmt));
+	  ++err_cnt;
+	  return;
+	}
+	if (mysql_stmt_fetch(*stmt)) {
+	  fprintf(stderr, "err: %s\n", mysql_stmt_error(*stmt));
+	  ++err_cnt;
+	  return;
+	}
+	if (!result_str.empty()) {
+	  result_str += " ";
+	}
+	result_str += std::string(resbuf, res_len);
+	// fprintf(stderr, "SSPS RES: %s\n", result_str.c_str());
+	got_data = 1;
+      } else {
+	got_data = 1;
+      }
+    } else {
+      auto_mysql_res res(db);
+      if (res != 0) {
+	if (verbose >= 0) {
+	  num_flds = mysql_num_fields(res);
+	  MYSQL_ROW row = 0;
+	  while ((row = mysql_fetch_row(res)) != 0) {
+	    got_data += 1;
+	    unsigned long *const lengths = mysql_fetch_lengths(res);
+	    if (verbose >= 2) {
+	      for (unsigned int i = 0; i < num_flds; ++i) {
+		if (!result_str.empty()) {
+		  result_str += " ";
+		}
+		result_str += std::string(row[i], lengths[i]);
+	      }
+	    }
+	  }
+	} else {
+	  MYSQL_ROW row = 0;
+	  while ((row = mysql_fetch_row(res)) != 0) {
+	    got_data += 1;
+	  }
+	}
+      } else {
+	if (mysql_field_count(db) == 0) {
+	  num_affected_rows = mysql_affected_rows(db);
+	} else {
+	  err = 1;
+	}
+      }
+    }
+    if (verbose >= 2 || (verbose >= 1 && err != 0)) {
+      if (err) {
+	++err_cnt;
+	const char *const errstr = mysql_error(db);
+	fprintf(stderr, "e=[%s] a=%u q=[%s]\n", errstr,
+	  num_affected_rows, buf_query);
+      } else {
+	fprintf(stderr, "a=%u q=[%s] r=[%s]\n", num_affected_rows, buf_query,
+	  result_str.c_str());
+      }
+    }
+    if (err == 0) {
+      ++io_success_count;
+      if (num_affected_rows > 0 || got_data > 0) {
+	op_success_count += got_data;
+      } else {
+	if (verbose >= 1) {
+	  fprintf(stderr, "k=%d numaff=%u gotdata=%d\n",
+	    k, num_affected_rows, got_data);
+	}
+      }
+      arg.sh.increment_count();
+    }
+    if (!keep_connection) {
+      if (stmt.get() != 0) {
+	stmt.reset();
+      }
+      db.reset();
+      connected = 0;
+    }
+    const double tm2 = gettimeofday_double();
+    set_timing(tm2 - tm1);
+    sleep_if();
+    if (sched_flag) {
+      sched_yield();
+    }
+  }
+  if (verbose >= 1) {
+    fprintf(stderr, "thread finished (error_count=%llu)\n", err_cnt);
+  }
+}
+
+void
+hstest_thread::test_10(int test_num)
+{
+  const int keep_connection = arg.sh.conf.get_int("keep_connection", 1);
+  unsigned int seed = time(0) + arg.id + 1;
+  seed ^= arg.sh.conf.get_int("seed_xor", 0);
+  drand48_data randbuf;
+  srand48_r(seed, &randbuf);
+  std::string err;
+  int keepconn_count = 0;
+  const char op = arg.sh.op;
+  const int verbose = arg.sh.conf.get_int("verbose", 1);
+  const std::string suffix = arg.sh.conf.get_str("value_suffix", "upd");
+  const int tablesize = arg.sh.conf.get_int("tablesize", 10000);
+  const int firstkey = arg.sh.conf.get_int("firstkey", 0);
+  const int sched_flag = arg.sh.conf.get_int("sched", 0);
+  const int moreflds = arg.sh.conf.get_int("moreflds", 0);
+  const std::string dbname = arg.sh.conf.get_str("dbname", "hstest");
+  const std::string table = arg.sh.conf.get_str("table", "hstest_table1");
+  const std::string index = arg.sh.conf.get_str("index", "PRIMARY");
+  const std::string field = arg.sh.conf.get_str("field", "v");
+  const int use_in = arg.sh.conf.get_int("in", 0);
+  const std::string moreflds_prefix = arg.sh.conf.get_str(
+    "moreflds_prefix", "column0123456789_");
+  const int dump = arg.sh.dump;
+  const int nodup = arg.sh.conf.get_int("nodup", 0);
+  std::string moreflds_str;
+  for (int i = 0; i < moreflds; ++i) {
+    char sbuf[1024];
+    snprintf(sbuf, sizeof(sbuf), ",%s%d", moreflds_prefix.c_str(), i);
+    moreflds_str += std::string(sbuf);
+  }
+  string_buffer wbuf;
+  char rbuf[16384];
+  for (size_t i = 0; i < arg.sh.loop; ++i) {
+    int len = 0, rlen = 0, wlen = 0;
+    #if 0
+    const double tm1 = gettimeofday_double();
+    #endif
+    if (fd.get() < 0) {
+      if (socket_connect(fd, arg.sh.arg, err) != 0) {
+	fprintf(stderr, "connect: %d %s\n", errno, strerror(errno));
+	return;
+      }
+      char *wp = wbuf.make_space(1024);
+      len = snprintf(wp, 1024,
+	"P\t1\t%s\t%s\tPRIMARY\t%s%s\n", dbname.c_str(), table.c_str(),
+	  field.c_str(), moreflds_str.c_str());
+	/* pst_num, db, table, index, retflds */
+      wbuf.space_wrote(len);
+      wlen = write(fd.get(), wbuf.begin(), len);
+      if (len != wlen) {
+	fprintf(stderr, "write: %d %d\n", len, wlen);
+	return;
+      }
+      wbuf.clear();
+      rlen = read(fd.get(), rbuf, sizeof(rbuf));
+      if (rlen <= 0 || rbuf[rlen - 1] != '\n') {
+	fprintf(stderr, "read: rlen=%d errno=%d\n", rlen, errno);
+	return;
+      }
+      if (rbuf[0] != '0') {
+	fprintf(stderr, "failed to open table\n");
+	return;
+      }
+      arg.sh.increment_conn(1);
+    }
+    const double tm1 = gettimeofday_double();
+    for (size_t j = 0; j < arg.sh.pipe; ++j) {
+      int k = 0, v = 0;
+      {
+	while (true) {
+	  double kf = 0, vf = 0;
+	  drand48_r(&randbuf, &kf);
+	  drand48_r(&randbuf, &vf);
+	  k = int(kf * tablesize) + firstkey;
+	  v = int(vf * tablesize) + firstkey;
+	  if (k - firstkey < arg.sh.keygen_size) {
+	    volatile char *const ptr = arg.sh.keygen + (k - firstkey);
+	    // int oldv = __sync_fetch_and_or(ptr, 1);
+	    int oldv = *ptr;
+	    *ptr += 1;
+	    if (nodup && oldv != 0) {
+	      if (dump) {
+		fprintf(stderr, "retry\n");
+	      }
+	      continue;
+	    }
+	  } else {
+	    if (nodup) {
+	      if (dump) {
+		fprintf(stderr, "retry2\n");
+	      }
+	      continue;
+	    }
+	  }
+	  size_t len = 0;
+	  if (op == 'G') {
+	    if (use_in) {
+	      char *wp = wbuf.make_space(1024);
+	      len = snprintf(wp, 1024, "1\t=\t1\t\t%d\t0\t@\t0\t%d\t%d",
+		use_in, use_in, k);
+	      wbuf.space_wrote(len);
+	      for (int j = 1; j < use_in; ++j) {
+		drand48_r(&randbuf, &kf);
+		k = int(kf * tablesize) + firstkey;
+		char *wp = wbuf.make_space(1024);
+		len = snprintf(wp, 1024, "\t%d", k);
+		wbuf.space_wrote(len);
+	      }
+	      wbuf.append_literal("\n");
+	    } else {
+	      char *wp = wbuf.make_space(1024);
+	      len = snprintf(wp, 1024, "1\t=\t1\t%d\n", k);
+	      wbuf.space_wrote(len);
+	    }
+	  } else if (op == 'U') {
+	    char *wp = wbuf.make_space(1024);
+	    len = snprintf(wp, 1024,
+	      "1\t=\t1\t%d\t1\t0\tU\t%d_%d%s\n", k, v, k, suffix.c_str());
+	    wbuf.space_wrote(len);
+	  }
+	  break;
+	}
+      }
+    }
+    wlen = write(fd.get(), wbuf.begin(), wbuf.size());
+    if ((size_t) wlen != wbuf.size()) {
+      fprintf(stderr, "write: %d %d\n", (int)wbuf.size(), wlen);
+      return;
+    }
+    wbuf.clear();
+    size_t read_cnt = 0;
+    size_t read_pos = 0;
+    while (read_cnt < arg.sh.pipe) {
+      rlen = read(fd.get(), rbuf + read_pos, sizeof(rbuf) - read_pos);
+      if (rlen <= 0) {
+	fprintf(stderr, "read: %d\n", rlen);
+	return;
+      }
+      read_pos += rlen;
+      while (true) {
+	const char *const nl = static_cast<const char *>(memchr(rbuf, '\n',
+	  read_pos));
+	if (nl == 0) {
+	  break;
+	}
+	++read_cnt;
+	++io_success_count;
+	const char *t1 = static_cast<const char *>(memchr(rbuf, '\t',
+	  nl - rbuf));
+	if (t1 == 0) {
+	  fprintf(stderr, "error \n");
+	  break;
+	}
+	++t1;
+	const char *t2 = static_cast<const char *>(memchr(t1, '\t',
+	  nl - t1));
+	if (t2 == 0) {
+	  if (verbose > 1) {
+	    fprintf(stderr, "key: notfound \n");
+	  }
+	  break;
+	}
+	++t2;
+	if (t1 == rbuf + 2 && rbuf[0] == '0') {
+	  if (op == 'G') {
+	    ++op_success_count;
+	    arg.sh.increment_count();
+	  } else if (op == 'U') {
+	    const char *t3 = t2;
+	    while (t3 != nl && t3[0] >= 0x10) {
+	      ++t3;
+	    }
+	    if (t3 != t2 + 1 || t2[0] != '1') {
+	      const std::string mess(t2, t3);
+	      fprintf(stderr, "mod: %s\n", mess.c_str());
+	    } else {
+	      ++op_success_count;
+	      arg.sh.increment_count();
+	      if (arg.sh.dump && arg.sh.pipe == 1) {
+		fwrite(wbuf.begin(), wbuf.size(), 1, stderr);
+	      }
+	    }
+	  }
+	} else {
+	  const char *t3 = t2;
+	  while (t3 != nl && t3[0] >= 0x10) {
+	    ++t3;
+	  }
+	  const std::string mess(t2, t3);
+	  fprintf(stderr, "err: %s\n", mess.c_str());
+	}
+	const size_t rest_size = rbuf + read_pos - (nl + 1);
+	if (rest_size != 0) {
+	  memmove(rbuf, nl + 1, rest_size);
+	}
+	read_pos = rest_size;
+      }
+    }
+    if (!keep_connection) {
+      fd.reset();
+      arg.sh.increment_conn(-1);
+    } else if (keep_connection > 1 && ++keepconn_count > keep_connection) {
+      keepconn_count = 0;
+      fd.reset();
+      arg.sh.increment_conn(-1);
+    }
+    const double tm2 = gettimeofday_double();
+    set_timing(tm2 - tm1);
+    sleep_if();
+    if (sched_flag) {
+      sched_yield();
+    }
+  }
+  if (dump) {
+    fprintf(stderr, "done\n");
+  }
+}
+
+void
+hstest_thread::sleep_if()
+{
+  if (arg.sh.usleep) {
+    struct timespec ts = {
+      arg.sh.usleep / 1000000,
+      (arg.sh.usleep % 1000000) * 1000
+    };
+    nanosleep(&ts, 0);
+  }
+}
+
+void
+hstest_thread::set_timing(double time_spent)
+{
+  response_min = std::min(response_min, time_spent);
+  response_max = std::max(response_max, time_spent);
+  response_sum += time_spent;
+  if (op_success_count != 0) {
+    response_avg = response_sum / op_success_count;
+  }
+}
+
+void
+hstest_thread::test_11(int test_num)
+{
+  const int keep_connection = arg.sh.conf.get_int("keep_connection", 1);
+  const int tablesize = arg.sh.conf.get_int("tablesize", 0);
+  unsigned int seed = arg.id;
+  seed ^= arg.sh.conf.get_int("seed_xor", 0);
+  std::string err;
+  hstcpcli_ptr cli;
+  for (size_t i = 0; i < arg.sh.loop; ++i) {
+    if (cli.get() == 0) {
+      cli = hstcpcli_i::create(arg.sh.arg);
+      cli->request_buf_open_index(0, "hstest", "hstest_table1", "", "v");
+	/* pst_num, db, table, index, retflds */
+      if (cli->request_send() != 0) {
+	fprintf(stderr, "reuqest_send: %s\n", cli->get_error().c_str());
+	return;
+      }
+      size_t num_flds = 0;
+      if (cli->response_recv(num_flds) != 0) {
+	fprintf(stderr, "reuqest_recv: %s\n", cli->get_error().c_str());
+	return;
+      }
+      cli->response_buf_remove();
+    }
+    for (size_t j = 0; j < arg.sh.pipe; ++j) {
+      char buf[256];
+      int k = 0, v = 0, len = 0;
+      {
+	k = rand_r(&seed);
+	v = rand_r(&seed); /* unused */
+	if (tablesize != 0) {
+	  k &= tablesize;
+	}
+	len = snprintf(buf, sizeof(buf), "%d", k);
+      }
+      const string_ref key(buf, len);
+      const string_ref op("=", 1);
+      cli->request_buf_exec_generic(0, op, &key, 1, 1, 0, string_ref(), 0, 0);
+    }
+    if (cli->request_send() != 0) {
+      fprintf(stderr, "reuqest_send: %s\n", cli->get_error().c_str());
+      return;
+    }
+    size_t read_cnt = 0;
+    for (size_t j = 0; j < arg.sh.pipe; ++j) {
+      size_t num_flds = 0;
+      if (cli->response_recv(num_flds) != 0) {
+	fprintf(stderr, "reuqest_recv: %s\n", cli->get_error().c_str());
+	return;
+      }
+      {
+	++read_cnt;
+	++io_success_count;
+	arg.sh.increment_count();
+	{
+	  ++op_success_count;
+	}
+      }
+      cli->response_buf_remove();
+    }
+    if (!keep_connection) {
+      cli.reset();
+    }
+  }
+}
+
+void
+hstest_thread::test_watch()
+{
+  const int timelimit = arg.sh.conf.get_int("timelimit", 0);
+  const int timelimit_offset = timelimit / 2;
+  int loop = 0;
+  double t1 = 0, t2 = 0;
+  size_t cnt_t1 = 0, cnt_t2 = 0;
+  size_t prev_cnt = 0;
+  double now_f = 0;
+  while (true) {
+    sleep(1);
+    const size_t cnt = arg.sh.count;
+    const size_t df = cnt - prev_cnt;
+    prev_cnt = cnt;
+    const double now_prev = now_f;
+    now_f = gettimeofday_double();
+    if (now_prev != 0) {
+      const double rps = static_cast<double>(df) / (now_f - now_prev);
+      fprintf(stderr, "now: %zu cntdiff: %zu tdiff: %f rps: %f\n",
+        static_cast<size_t>(now_f), df, now_f - now_prev, rps);
+    }
+    if (timelimit != 0) {
+      if (arg.sh.wait_conn == 0 || arg.sh.conn_count >= arg.sh.wait_conn) {
+	++loop;
+      }
+      if (loop == timelimit_offset) {
+        t1 = gettimeofday_double();
+        cnt_t1 = cnt;
+	arg.sh.enable_timing = 1;
+	fprintf(stderr, "start timing\n");
+      } else if (loop == timelimit_offset + timelimit) {
+        t2 = gettimeofday_double();
+        cnt_t2 = cnt;
+        const size_t cnt_diff = cnt_t2 - cnt_t1;
+        const double tdiff = t2 - t1;
+        const double qps = cnt_diff / (tdiff != 0 ? tdiff : 1);
+        fprintf(stderr, "(%f: %zu, %f: %zu), %10.5f qps\n",
+          t1, cnt_t1, t2, cnt_t2, qps);
+	size_t keycnt = 0;
+	for (int i = 0; i < arg.sh.keygen_size; ++i) {
+	  if (arg.sh.keygen[i]) {
+	    ++keycnt;
+	  }
+	}
+	fprintf(stderr, "keygen=%zu\n", keycnt);
+	break;
+      }
+    }
+  }
+#if 0
+  int loop = 0;
+  double t1 = 0, t2 = 0;
+  size_t cnt_t1 = 0, cnt_t2 = 0;
+  size_t prev_cnt = 0;
+  while (true) {
+    sleep(1);
+    const size_t cnt = arg.sh.count;
+    const size_t df = cnt - prev_cnt;
+    prev_cnt = cnt;
+    const size_t now = time(0);
+    fprintf(stderr, "%zu %zu\n", now, df);
+    if (timelimit != 0) {
+      ++loop;
+      if (loop == timelimit_offset) {
+	t1 = gettimeofday_double();
+	cnt_t1 = cnt;
+      } else if (loop == timelimit_offset + timelimit) {
+	t2 = gettimeofday_double();
+	cnt_t2 = cnt;
+	const size_t cnt_diff = cnt_t2 - cnt_t1;
+	const double tdiff = t2 - t1;
+	const double qps = cnt_diff / (tdiff != 0 ? tdiff : 1);
+	fprintf(stderr, "(%f: %zu, %f: %zu), %10.5f qps\n",
+	  t1, cnt_t1, t2, cnt_t2, qps);
+	size_t keycnt = 0;
+	for (int i = 0; i < arg.sh.keygen_size; ++i) {
+	  if (arg.sh.keygen[i]) {
+	    ++keycnt;
+	  }
+	}
+	fprintf(stderr, "keygen=%zu\n", keycnt);
+	_exit(0);
+      }
+    }
+  }
+#endif
+}
+
+void
+hstest_thread::test_12(int test_num)
+{
+  /* NOTE: num_threads should be 1 */
+  /* create table hstest
+   * ( k varchar(255) not null, v varchar(255) not null, primary key(k))
+   * engine = innodb; */
+  mysqltest_thread_initobj initobj;
+  auto_mysql db;
+  std::string err;
+  unsigned long long err_cnt = 0;
+  unsigned long long query_cnt = 0;
+  #if 0
+  my_bool reconnect = 0;
+  if (mysql_options(db, MYSQL_OPT_RECONNECT, &reconnect) != 0) {
+    err = "mysql_options() failed";
+    ++err_cnt;
+    return;
+  }
+  #endif
+  const std::string mysql_host = arg.sh.conf.get_str("host", "localhost");
+  const int mysql_port = arg.sh.conf.get_int("mysqlport", 3306);
+  const unsigned int num = arg.sh.loop;
+  const size_t pipe = arg.sh.pipe;
+  const std::string mysql_user = arg.sh.conf.get_str("mysqluser", "root");
+  const std::string mysql_passwd = arg.sh.conf.get_str("mysqlpass", "");
+  const std::string mysql_dbname = arg.sh.conf.get_str("db", "hstest");
+  const int keep_connection = arg.sh.conf.get_int("keep_connection", 1);
+  const int verbose = arg.sh.conf.get_int("verbose", 1);
+  const int use_handler = arg.sh.conf.get_int("handler", 0);
+  int connected = 0;
+  unsigned int k = 0;
+  string_buffer buf;
+  for (unsigned int i = 0; i < num; ++i) {
+    const int flags = 0;
+    if (connected == 0 && !mysql_real_connect(db, mysql_host.c_str(),
+      mysql_user.c_str(), mysql_user.empty() ? 0 : mysql_passwd.c_str(),
+      mysql_dbname.c_str(), mysql_port, 0, flags)) {
+      err = "failed to connect: " + std::string(mysql_error(db));
+      if (verbose >= 1) {
+	fprintf(stderr, "e=[%s]\n", err.c_str());
+      }
+      ++err_cnt;
+      return;
+    }
+    int r = 0;
+    if (connected == 0 && use_handler) {
+      const char *const q = "handler hstest open";
+      r = mysql_real_query(db, q, strlen(q));
+      if (r != 0) {
+	err = 1;
+      }
+    }
+    connected = 1;
+    std::string result_str;
+    unsigned int err = 0;
+    unsigned int num_flds = 0, num_affected_rows = 0;
+    int got_data = 0;
+    buf.clear();
+    buf.append_literal("insert into hstest values ");
+    for (size_t j = 0; j < pipe; ++j) {
+      const unsigned int v = ~k;
+      if (j != 0) {
+	buf.append_literal(",");
+      }
+      char *wp = buf.make_space(64);
+      int buf_query_len = snprintf(wp, 64, "('k%u', 'v%u')", k, v);
+      buf.space_wrote(buf_query_len);
+      ++k;
+    }
+    if (r == 0) {
+      r = mysql_real_query(db, buf.begin(), buf.size());
+      ++query_cnt;
+    }
+    if (r != 0) {
+      err = 1;
+    } else {
+      auto_mysql_res res(db);
+      if (res != 0) {
+	if (verbose >= 0) {
+	  num_flds = mysql_num_fields(res);
+	  MYSQL_ROW row = 0;
+	  while ((row = mysql_fetch_row(res)) != 0) {
+	    got_data = 1;
+	    unsigned long *const lengths = mysql_fetch_lengths(res);
+	    if (verbose >= 2) {
+	      for (unsigned int i = 0; i < num_flds; ++i) {
+		if (!result_str.empty()) {
+		  result_str += " ";
+		}
+		result_str += std::string(row[i], lengths[i]);
+	      }
+	    }
+	  }
+	}
+      } else {
+	if (mysql_field_count(db) == 0) {
+	  num_affected_rows = mysql_affected_rows(db);
+	} else {
+	  err = 1;
+	}
+      }
+    }
+    if (verbose >= 2 || (verbose >= 1 && err != 0)) {
+      if (err) {
+	++err_cnt;
+	const char *const errstr = mysql_error(db);
+	fprintf(stderr, "e=[%s] a=%u q=[%s]\n", errstr,
+	  num_affected_rows, std::string(buf.begin(), buf.size()).c_str());
+      } else {
+	fprintf(stderr, "a=%u q=[%s] r=[%s]\n", num_affected_rows,
+	  std::string(buf.begin(), buf.size()).c_str(),
+	  result_str.c_str());
+      }
+    }
+    if (err == 0) {
+      ++io_success_count;
+      if (num_affected_rows > 0 || got_data > 0) {
+	++op_success_count;
+      }
+      arg.sh.increment_count(pipe);
+    }
+    if (!keep_connection) {
+      db.reset();
+      connected = 0;
+    }
+  }
+  if (verbose >= 1) {
+    fprintf(stderr, "thread finished (error_count=%llu)\n", err_cnt);
+  }
+}
+
+void
+hstest_thread::test_21(int num)
+{
+  /* fsync test */
+  unsigned int id = arg.id;
+  std::string err;
+  #if 0
+  if (socket_connect(fd, arg.sh.arg, err) != 0) {
+    fprintf(stderr, "connect: %d %s\n", errno, strerror(errno));
+    return;
+  }
+  #endif
+  auto_file logfd;
+  char fname[1024];
+  snprintf(fname, sizeof(fname), "synctest_%u", id);
+  int open_flags = O_WRONLY | O_CREAT | O_TRUNC | O_APPEND;
+  logfd.reset(open(fname, open_flags, 0644));
+  if (logfd.get() < 0) {
+    fprintf(stderr, "open: %s: %d %s\n", fname, errno, strerror(errno));
+    return;
+  }
+  char buf[1024];
+  unsigned long long count = 0;
+  while (true) {
+    snprintf(buf, sizeof(buf), "%u %llu\n", id, count);
+    const size_t len = strlen(buf);
+    if (write(logfd.get(), buf, len) != (ssize_t)len) {
+      fprintf(stderr, "write: %s: %d %s\n", fname, errno, strerror(errno));
+      return;
+    }
+    #if 0
+    if (write(fd.get(), buf, len) != (ssize_t)len) {
+      fprintf(stderr, "write(sock): %d %s\n", errno, strerror(errno));
+      return;
+    }
+    #endif
+    if (fdatasync(logfd.get()) != 0) {
+      fprintf(stderr, "fsync: %s: %d %s\n", fname, errno, strerror(errno));
+      return;
+    }
+    ++count;
+    ++op_success_count;
+    arg.sh.increment_count();
+  }
+}
+
+void
+hstest_thread::test_22(int num)
+{
+  /* dd if=/dev/zero of=dummy.dat bs=1024M count=100 */
+  unsigned int id = arg.id;
+  std::string err;
+  auto_file filefd;
+  char fname[1024];
+  snprintf(fname, sizeof(fname), "dummy.dat");
+  int open_flags = O_RDONLY | O_DIRECT;
+  filefd.reset(open(fname, open_flags, 0644));
+  if (filefd.get() < 0) {
+    fprintf(stderr, "open: %s: %d %s\n", fname, errno, strerror(errno));
+    return;
+  }
+  char buf_x[4096 * 2];
+  char *const buf = (char *)(size_t(buf_x + 4096) / 4096 * 4096);
+  unsigned long long count = 0;
+  drand48_data randbuf;
+  unsigned long long seed = time(0);
+  seed *= 10;
+  seed += id;
+  srand48_r(seed, &randbuf);
+  for (unsigned int i = 0; i < arg.sh.loop; ++i) {
+    double kf = 0;
+    drand48_r(&randbuf, &kf);
+    kf *= (209715200 / 1);
+    // fprintf(stderr, "v=%f\n", kf);
+    off_t v = static_cast<off_t>(kf);
+    v %= (209715200 / 1);
+    v *= (512 * 1);
+    const double tm1 = gettimeofday_double();
+    const ssize_t r = pread(filefd.get(), buf, (512 * 1), v);
+    const double tm2 = gettimeofday_double();
+    if (r < 0) {
+      fprintf(stderr, "pread: %s: %d %s\n", fname, errno, strerror(errno));
+      return;
+    }
+    ++count;
+    ++op_success_count;
+    arg.sh.increment_count();
+    set_timing(tm2 - tm1);
+  }
+}
+
+void
+hstest_thread::operator ()()
+{
+  if (arg.watch_flag) {
+    return test_watch();
+  }
+  int test_num = arg.sh.conf.get_int("test", 1);
+  if (test_num == 1) {
+    test_1();
+  } else if (test_num == 2 || test_num == 3) {
+    test_2_3(test_num);
+  } else if (test_num == 4 || test_num == 5) {
+    test_4_5(test_num);
+  } else if (test_num == 6) {
+    test_6(test_num);
+  } else if (test_num == 7) {
+    test_7(test_num);
+  } else if (test_num == 8) {
+    test_8(test_num);
+  } else if (test_num == 9) {
+    test_9(test_num);
+  } else if (test_num == 10) {
+    test_10(test_num);
+  } else if (test_num == 11) {
+    test_11(test_num);
+  } else if (test_num == 12) {
+    test_12(test_num);
+  } else if (test_num == 21) {
+    test_21(test_num);
+  } else if (test_num == 22) {
+    test_22(test_num);
+  }
+  const int halt = arg.sh.conf.get_int("halt", 0);
+  if (halt) {
+    fprintf(stderr, "thread halted\n");
+    while (true) {
+      sleep(100000);
+    }
+  }
+  fprintf(stderr, "thread finished\n");
+}
+
+int
+hstest_main(int argc, char **argv)
+{
+  ignore_sigpipe();
+  hstest_shared shared;
+  parse_args(argc, argv, shared.conf);
+  shared.conf["port"] = shared.conf["hsport"];
+  shared.arg.set(shared.conf);
+  shared.loop = shared.conf.get_int("num", 1000);
+  shared.pipe = shared.conf.get_int("pipe", 1);
+  shared.verbose = shared.conf.get_int("verbose", 1);
+  const int tablesize = shared.conf.get_int("tablesize", 0);
+  std::vector<char> keygen(tablesize);
+  shared.keygen = &keygen[0];
+  shared.keygen_size = tablesize;
+  shared.usleep = shared.conf.get_int("usleep", 0);
+  shared.dump = shared.conf.get_int("dump", 0);
+  shared.num_threads = shared.conf.get_int("num_threads", 10);
+  shared.wait_conn = shared.conf.get_int("wait_conn", 0);
+  const std::string op = shared.conf.get_str("op", "G");
+  if (op.size() > 0) {
+    shared.op = op[0];
+  }
+  #if 0
+  const int localdb_flag = shared.conf.get_int("local", 0);
+  if (localdb_flag) {
+    shared.localdb = database_i::create(shared.conf);
+  }
+  #endif
+  const int num_thrs = shared.num_threads;
+  typedef thread<hstest_thread> thread_type;
+  typedef std::auto_ptr<thread_type> thread_ptr;
+  typedef auto_ptrcontainer< std::vector<thread_type *> > thrs_type;
+  thrs_type thrs;
+  for (int i = 0; i < num_thrs; ++i) {
+    const hstest_thread::arg_type arg(i, shared, false);
+    thread_ptr thr(new thread<hstest_thread>(arg));
+    thrs.push_back_ptr(thr);
+  }
+  for (size_t i = 0; i < thrs.size(); ++i) {
+    thrs[i]->start();
+  }
+  thread_ptr watch_thread;
+  const int timelimit = shared.conf.get_int("timelimit", 0);
+  {
+    const hstest_thread::arg_type arg(0, shared, true);
+    watch_thread = thread_ptr(new thread<hstest_thread>(arg));
+    watch_thread->start();
+  }
+  size_t iocnt = 0, opcnt = 0;
+  double respmin = 999999, respmax = 0;
+  double respsum = 0;
+  if (timelimit != 0) {
+    watch_thread->join();
+  }
+  for (size_t i = 0; i < thrs.size(); ++i) {
+    if (timelimit == 0) {
+      thrs[i]->join();
+    }
+    iocnt += (*thrs[i])->io_success_count;
+    opcnt += (*thrs[i])->op_success_count;
+    respmin = std::min(respmin, (*thrs[i])->response_min);
+    respmax = std::max(respmax, (*thrs[i])->response_max);
+    respsum += (*thrs[i])->response_sum;
+  }
+  fprintf(stderr, "io_success_count=%zu op_success_count=%zu\n", iocnt, opcnt);
+  fprintf(stderr, "respmin=%f respmax=%f respsum=%f respavg=%f\n",
+    respmin, respmax, respsum, respsum / opcnt);
+  size_t keycnt = 0;
+  for (size_t i = 0; i < keygen.size(); ++i) {
+    if (keygen[i]) {
+      ++keycnt;
+    }
+  }
+  fprintf(stderr, "keycnt=%zu\n", keycnt);
+  _exit(0);
+  return 0;
+}
+
+};
+
+int
+main(int argc, char **argv)
+{
+  return dena::hstest_main(argc, argv);
+}
+
diff --git a/plugin/handler_socket/client/hstest.pl b/plugin/handler_socket/client/hstest.pl
new file mode 100755
index 00000000..1363e153
--- /dev/null
+++ b/plugin/handler_socket/client/hstest.pl
@@ -0,0 +1,228 @@
+#!/usr/bin/env perl
+
+# vim:sw=8:ai:ts=8
+
+use strict;
+use warnings;
+
+use DBI;
+use Net::HandlerSocket;
+
+my %conf = ();
+for my $i (@ARGV) {
+	my ($k, $v) = split(/=/, $i);
+	$conf{$k} = $v;
+}
+
+my $verbose = get_conf("verbose", 0);
+my $actions_str = get_conf("actions", "hsread");
+my $tablesize = get_conf("tablesize", 10000);
+my $db = get_conf("db", "hstest");
+my $table = get_conf("table", "hstest_table1");
+my $engine = get_conf("engine", "innodb");
+my $host = get_conf("host", "localhost");
+my $mysqlport = get_conf("mysqlport", 3306);
+my $mysqluser = get_conf("mysqluser", "root");
+my $mysqlpass = get_conf("mysqlpass", "");
+my $hsport = get_conf("hsport", 9999);
+my $loop = get_conf("loop", 10000);
+my $op = get_conf("op", "=");
+my $ssps = get_conf("ssps", 0);
+my $num_moreflds = get_conf("moreflds", 0);
+my $moreflds_prefix = get_conf("moreflds_prefix", "column0123456789_");
+my $keytype = get_conf("keytype", "varchar(32)");
+my $file = get_conf("file", undef);
+
+my $dsn = "DBI:MariaDB:database=;host=$host;port=$mysqlport"
+	. ";mariadb_server_prepare=$ssps";
+my $dbh = DBI->connect($dsn, $mysqluser, $mysqlpass, { RaiseError => 1 });
+my $hsargs = { 'host' => $host, 'port' => $hsport };
+my $cli = new Net::HandlerSocket($hsargs);
+
+my @actions = split(/,/, $actions_str);
+for my $action (@actions) {
+	if ($action eq "table") {
+		print("TABLE $db.$table\n");
+		$dbh->do("drop database if exists $db");
+		$dbh->do("create database $db");
+		$dbh->do("use $db");
+		my $moreflds = get_createtbl_moreflds_str();
+		$dbh->do(
+			"create table $table (" .
+			"k $keytype primary key" .
+			",v varchar(32) not null" .
+			$moreflds .
+			") character set utf8 collate utf8_bin " .
+			"engine = $engine");
+	} elsif ($action eq "insert") {
+		print("INSERT $db.$table tablesize=$tablesize\n");
+		$dbh->do("use $db");
+		my $moreflds = get_insert_moreflds_str();
+		for (my $i = 0; $i < $tablesize; $i += 100) {
+			my $qstr = "insert into $db.$table values";
+			for (my $j = 0; $j < 100; ++$j) {
+				if ($j != 0) {
+					$qstr .= ",";
+				}
+				my $k = "" . ($i + $j);
+				my $v = "v" . int(rand(1000)) . ($i + $j);
+				$qstr .= "('$k', '$v'";
+				for (my $j = 0; $j < $num_moreflds; ++$j) {
+					$qstr .= ",'$j'";
+				}
+				$qstr .= ")";
+			}
+			$dbh->do($qstr);
+			print "$i/$tablesize\n" if $i % 1000 == 0;
+		}
+	} elsif ($action eq "read") {
+		print("READ $db.$table op=$op loop=$loop\n");
+		$dbh->do("use $db");
+		my $moreflds = get_select_moreflds_str();
+		my $sth = $dbh->prepare(
+			"select k,v$moreflds from $db.$table where k = ?");
+		for (my $i = 0; $i < $loop; ++$i) {
+			my $k = "" . int(rand($tablesize));
+			# print "k=$k\n";
+			$sth->execute($k);
+			if ($verbose >= 10) {
+				print "RET:";
+				while (my $ref = $sth->fetchrow_arrayref()) {
+					my $rk = $ref->[0];
+					my $rv = $ref->[1];
+					print " $rk $rv";
+				}
+				print "\n";
+			}
+			print "$i/$loop\n" if $i % 1000 == 0;
+		}
+	} elsif ($action eq "hsinsert") {
+		print("HSINSERT $db.$table tablesize=$tablesize\n");
+		$cli->open_index(1, $db, $table, '', 'k,v');
+		for (my $i = 0; $i < $tablesize; ++$i) {
+			my $k = "" . $i;
+			my $v = "v" . int(rand(1000)) . $i;
+			my $r = $cli->execute_insert(1, [ $k, $v ]);
+			if ($r->[0] != 0) {
+				die;
+			}
+			print "$i/$tablesize\n" if $i % 1000 == 0;
+		}
+	} elsif ($action eq "hsread") {
+		print("HSREAD $db.$table op=$op loop=$loop\n");
+		my $moreflds = get_select_moreflds_str();
+		$cli->open_index(1, $db, $table, '', "k,v$moreflds");
+		for (my $i = 0; $i < $loop; ++$i) {
+			my $k = "" . int(rand($tablesize));
+			# print "k=$k\n";
+			my $r = $cli->execute_find(1, $op, [ $k ], 1, 0);
+			if ($verbose >= 10) {
+				my $len = scalar(@{$r});
+				print "LEN=$len";
+				for my $e (@{$r}) {
+					print " [$e]";
+				}
+				print "\n";
+			}
+			print "$i/$loop\n" if $i % 1000 == 0;
+		}
+	} elsif ($action eq "hsupdate") {
+		my $vbase = "v" . int(rand(1000));
+		print("HSUPDATE $db.$table op=$op loop=$loop vbase=$vbase\n");
+		$cli->open_index(1, $db, $table, '', 'v');
+		for (my $i = 0; $i < $loop; ++$i) {
+			my $k = "" . int(rand($tablesize));
+			my $v = $vbase . $i;
+			print "k=$k v=$v\n";
+			my $r = $cli->execute_update(1, $op, [ $k ], 1, 0,
+				[ $v ]);
+			if ($verbose >= 10) {
+				print "UP k=$k v=$v\n";
+			}
+			print "$i/$loop\n" if $i % 1000 == 0;
+		}
+	} elsif ($action eq "hsdelete") {
+		print("HSDELETE $db.$table op=$op loop=$loop\n");
+		$cli->open_index(1, $db, $table, '', '');
+		for (my $i = 0; $i < $loop; ++$i) {
+			my $k = "" . int(rand($tablesize));
+			print "k=$k\n";
+			my $r = $cli->execute_delete(1, $op, [ $k ], 1, 0);
+			if ($verbose >= 10) {
+				print "DEL k=$k\n";
+			}
+			print "$i/$loop\n" if $i % 1000 == 0;
+		}
+	} elsif ($action eq "verify") {
+		verify_do();
+	}
+}
+
+sub verify_do {
+	my ($fail_cnt, $ok_cnt) = (0, 0);
+	my $sth = $dbh->prepare("select v from $db.$table where k = ?");
+	use FileHandle;
+	my $fh = new FileHandle($file, "r");
+	while (my $line = <$fh>) {
+		chomp($line);
+		my @vec = split(/\t/, $line);
+		my $k = $vec[3];
+		my $v = $vec[7];
+		next if (!defined($k) || !defined($v));
+		# print "$k $v\n";
+		$sth->execute($k);
+		my $aref = $sth->fetchrow_arrayref();
+		if (!defined($aref)) {
+			print "FAILED: $k notfound\n";
+			++$fail_cnt;
+		} else {
+			my $gv = $aref->[0];
+			if ($gv ne $v) {
+				print "FAILED: $k got=$gv expected=$v\n";
+				++$fail_cnt;
+			} else {
+				print "OK: $k $v $gv\n" if $verbose >= 10;
+				++$ok_cnt;
+			}
+		}
+	}
+	print "OK=$ok_cnt FAIL=$fail_cnt\n";
+}
+
+sub get_conf {
+	my ($key, $def) = @_;
+	my $val = $conf{$key};
+	if ($val) {
+		print "$key=$val\n";
+	} else {
+		$val = $def;
+		$def ||= '';
+		print "$key=$def(default)\n";
+	}
+	return $val;
+}
+
+sub get_createtbl_moreflds_str {
+	my $s = "";
+	for (my $j = 0; $j < $num_moreflds; ++$j) {
+		$s .= ",$moreflds_prefix$j varchar(30)";
+	}
+	return $s;
+}
+
+sub get_select_moreflds_str {
+	my $s = "";
+	for (my $i = 0; $i < $num_moreflds; ++$i) {
+		$s .= ",$moreflds_prefix$i";
+	}
+	return $s;
+}
+
+sub get_insert_moreflds_str {
+	my $s = "";
+	for (my $i = 0; $i < $num_moreflds; ++$i) {
+		$s .= ",?";
+	}
+	return $s;
+}
+
diff --git a/plugin/handler_socket/client/hstest_hs.sh b/plugin/handler_socket/client/hstest_hs.sh
new file mode 100755
index 00000000..1b9eee18
--- /dev/null
+++ b/plugin/handler_socket/client/hstest_hs.sh
@@ -0,0 +1,4 @@
+#!/bin/bash
+
+exec ./hstest test=10 tablesize=10000 host=localhost hsport=9998 num=10000000 \
+	num_threads=100 timelimit=10 $@
diff --git a/plugin/handler_socket/client/hstest_hs_more50.sh b/plugin/handler_socket/client/hstest_hs_more50.sh
new file mode 100755
index 00000000..b7539c52
--- /dev/null
+++ b/plugin/handler_socket/client/hstest_hs_more50.sh
@@ -0,0 +1,4 @@
+#!/bin/bash
+
+exec ./hstest test=10 key_mask=9999 host=localhost port=9998 num=10000000 \
+	num_threads=100 timelimit=10 moreflds=50 $@
diff --git a/plugin/handler_socket/client/hstest_md.sh b/plugin/handler_socket/client/hstest_md.sh
new file mode 100755
index 00000000..8129f884
--- /dev/null
+++ b/plugin/handler_socket/client/hstest_md.sh
@@ -0,0 +1,7 @@
+#!/bin/bash
+
+./hstest test=7 key_mask=9999 host=localhost port=11211 num=10000 \
+	num_threads=10 timelimit=10 op=R $@
+./hstest test=7 key_mask=9999 host=localhost port=11211 num=1000000 \
+	num_threads=100 timelimit=10 op=G $@
+
diff --git a/plugin/handler_socket/client/hstest_my.sh b/plugin/handler_socket/client/hstest_my.sh
new file mode 100755
index 00000000..cf917cf4
--- /dev/null
+++ b/plugin/handler_socket/client/hstest_my.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+exec ./hstest test=9 tablesize=9999 host=localhost mysqlport=3306 num=1000000 \
+	num_threads=100 verbose=1 timelimit=10 $@
diff --git a/plugin/handler_socket/client/hstest_my_more50.sh b/plugin/handler_socket/client/hstest_my_more50.sh
new file mode 100755
index 00000000..6782b5e8
--- /dev/null
+++ b/plugin/handler_socket/client/hstest_my_more50.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+exec ./hstest test=9 key_mask=9999 host=localhost port=3306 num=1000000 \
+	num_threads=100 verbose=1 timelimit=10 moreflds=50 $@