Adding upstream version 14.2.21.upstream/14.2.21upstream

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

1 files changed, 585 insertions, 0 deletions

diff --git a/src/common/perf_counters.cc b/src/common/perf_counters.cc
new file mode 100644
index 00000000..36105b0e
--- /dev/null
+++ b/src/common/perf_counters.cc
@@ -0,0 +1,585 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2011 New Dream Network
+ * Copyright (C) 2017 OVH
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.
+ *
+ */
+
+#include "common/perf_counters.h"
+#include "common/dout.h"
+#include "common/valgrind.h"
+
+using std::ostringstream;
+
+PerfCountersCollectionImpl::PerfCountersCollectionImpl()
+{
+}
+
+PerfCountersCollectionImpl::~PerfCountersCollectionImpl()
+{
+  clear();
+}
+
+void PerfCountersCollectionImpl::add(PerfCounters *l)
+{
+  // make sure the name is unique
+  perf_counters_set_t::iterator i;
+  i = m_loggers.find(l);
+  while (i != m_loggers.end()) {
+    ostringstream ss;
+    ss << l->get_name() << "-" << (void*)l;
+    l->set_name(ss.str());
+    i = m_loggers.find(l);
+  }
+
+  m_loggers.insert(l);
+
+  for (unsigned int i = 0; i < l->m_data.size(); ++i) {
+    PerfCounters::perf_counter_data_any_d &data = l->m_data[i];
+
+    std::string path = l->get_name();
+    path += ".";
+    path += data.name;
+
+    by_path[path] = {&data, l};
+  }
+}
+
+void PerfCountersCollectionImpl::remove(PerfCounters *l)
+{
+  for (unsigned int i = 0; i < l->m_data.size(); ++i) {
+    PerfCounters::perf_counter_data_any_d &data = l->m_data[i];
+
+    std::string path = l->get_name();
+    path += ".";
+    path += data.name;
+
+    by_path.erase(path);
+  }
+
+  perf_counters_set_t::iterator i = m_loggers.find(l);
+  ceph_assert(i != m_loggers.end());
+  m_loggers.erase(i);
+}
+
+void PerfCountersCollectionImpl::clear()
+{
+  perf_counters_set_t::iterator i = m_loggers.begin();
+  perf_counters_set_t::iterator i_end = m_loggers.end();
+  for (; i != i_end; ) {
+    delete *i;
+    m_loggers.erase(i++);
+  }
+
+  by_path.clear();
+}
+
+bool PerfCountersCollectionImpl::reset(const std::string &name)
+{
+  bool result = false;
+  perf_counters_set_t::iterator i = m_loggers.begin();
+  perf_counters_set_t::iterator i_end = m_loggers.end();
+
+  if (!strcmp(name.c_str(), "all"))  {
+    while (i != i_end) {
+      (*i)->reset();
+      ++i;
+    }
+    result = true;
+  } else {
+    while (i != i_end) {
+      if (!name.compare((*i)->get_name())) {
+	(*i)->reset();
+	result = true;
+	break;
+      }
+      ++i;
+    }
+  }
+
+  return result;
+}
+
+
+/**
+ * Serialize current values of performance counters.  Optionally
+ * output the schema instead, or filter output to a particular
+ * PerfCounters or particular named counter.
+ *
+ * @param logger name of subsystem logger, e.g. "mds_cache", may be empty
+ * @param counter name of counter within subsystem, e.g. "num_strays",
+ *                may be empty.
+ * @param schema if true, output schema instead of current data.
+ * @param histograms if true, dump histogram values,
+ *                   if false dump all non-histogram counters
+ */
+void PerfCountersCollectionImpl::dump_formatted_generic(
+    Formatter *f,
+    bool schema,
+    bool histograms,
+    const std::string &logger,
+    const std::string &counter) const
+{
+  f->open_object_section("perfcounter_collection");
+  
+  for (perf_counters_set_t::iterator l = m_loggers.begin();
+       l != m_loggers.end(); ++l) {
+    // Optionally filter on logger name, pass through counter filter
+    if (logger.empty() || (*l)->get_name() == logger) {
+      (*l)->dump_formatted_generic(f, schema, histograms, counter);
+    }
+  }
+  f->close_section();
+}
+
+void PerfCountersCollectionImpl::with_counters(std::function<void(
+      const PerfCountersCollectionImpl::CounterMap &)> fn) const
+{
+  fn(by_path);
+}
+
+// ---------------------------
+
+PerfCounters::~PerfCounters()
+{
+}
+
+void PerfCounters::inc(int idx, uint64_t amt)
+{
+#ifndef WITH_SEASTAR
+  if (!m_cct->_conf->perf)
+    return;
+#endif
+
+  ceph_assert(idx > m_lower_bound);
+  ceph_assert(idx < m_upper_bound);
+  perf_counter_data_any_d& data(m_data[idx - m_lower_bound - 1]);
+  if (!(data.type & PERFCOUNTER_U64))
+    return;
+  if (data.type & PERFCOUNTER_LONGRUNAVG) {
+    data.avgcount++;
+    data.u64 += amt;
+    data.avgcount2++;
+  } else {
+    data.u64 += amt;
+  }
+}
+
+void PerfCounters::dec(int idx, uint64_t amt)
+{
+#ifndef WITH_SEASTAR
+  if (!m_cct->_conf->perf)
+    return;
+#endif
+
+  ceph_assert(idx > m_lower_bound);
+  ceph_assert(idx < m_upper_bound);
+  perf_counter_data_any_d& data(m_data[idx - m_lower_bound - 1]);
+  ceph_assert(!(data.type & PERFCOUNTER_LONGRUNAVG));
+  if (!(data.type & PERFCOUNTER_U64))
+    return;
+  data.u64 -= amt;
+}
+
+void PerfCounters::set(int idx, uint64_t amt)
+{
+#ifndef WITH_SEASTAR
+  if (!m_cct->_conf->perf)
+    return;
+#endif
+
+  ceph_assert(idx > m_lower_bound);
+  ceph_assert(idx < m_upper_bound);
+  perf_counter_data_any_d& data(m_data[idx - m_lower_bound - 1]);
+  if (!(data.type & PERFCOUNTER_U64))
+    return;
+
+  ANNOTATE_BENIGN_RACE_SIZED(&data.u64, sizeof(data.u64),
+                             "perf counter atomic");
+  if (data.type & PERFCOUNTER_LONGRUNAVG) {
+    data.avgcount++;
+    data.u64 = amt;
+    data.avgcount2++;
+  } else {
+    data.u64 = amt;
+  }
+}
+
+uint64_t PerfCounters::get(int idx) const
+{
+#ifndef WITH_SEASTAR
+  if (!m_cct->_conf->perf)
+    return 0;
+#endif
+
+  ceph_assert(idx > m_lower_bound);
+  ceph_assert(idx < m_upper_bound);
+  const perf_counter_data_any_d& data(m_data[idx - m_lower_bound - 1]);
+  if (!(data.type & PERFCOUNTER_U64))
+    return 0;
+  return data.u64;
+}
+
+void PerfCounters::tinc(int idx, utime_t amt)
+{
+#ifndef WITH_SEASTAR
+  if (!m_cct->_conf->perf)
+    return;
+#endif
+
+  ceph_assert(idx > m_lower_bound);
+  ceph_assert(idx < m_upper_bound);
+  perf_counter_data_any_d& data(m_data[idx - m_lower_bound - 1]);
+  if (!(data.type & PERFCOUNTER_TIME))
+    return;
+  if (data.type & PERFCOUNTER_LONGRUNAVG) {
+    data.avgcount++;
+    data.u64 += amt.to_nsec();
+    data.avgcount2++;
+  } else {
+    data.u64 += amt.to_nsec();
+  }
+}
+
+void PerfCounters::tinc(int idx, ceph::timespan amt)
+{
+#ifndef WITH_SEASTAR
+  if (!m_cct->_conf->perf)
+    return;
+#endif
+
+  ceph_assert(idx > m_lower_bound);
+  ceph_assert(idx < m_upper_bound);
+  perf_counter_data_any_d& data(m_data[idx - m_lower_bound - 1]);
+  if (!(data.type & PERFCOUNTER_TIME))
+    return;
+  if (data.type & PERFCOUNTER_LONGRUNAVG) {
+    data.avgcount++;
+    data.u64 += amt.count();
+    data.avgcount2++;
+  } else {
+    data.u64 += amt.count();
+  }
+}
+
+void PerfCounters::tset(int idx, utime_t amt)
+{
+#ifndef WITH_SEASTAR
+  if (!m_cct->_conf->perf)
+    return;
+#endif
+
+  ceph_assert(idx > m_lower_bound);
+  ceph_assert(idx < m_upper_bound);
+  perf_counter_data_any_d& data(m_data[idx - m_lower_bound - 1]);
+  if (!(data.type & PERFCOUNTER_TIME))
+    return;
+  data.u64 = amt.to_nsec();
+  if (data.type & PERFCOUNTER_LONGRUNAVG)
+    ceph_abort();
+}
+
+utime_t PerfCounters::tget(int idx) const
+{
+#ifndef WITH_SEASTAR
+  if (!m_cct->_conf->perf)
+    return utime_t();
+#endif
+
+  ceph_assert(idx > m_lower_bound);
+  ceph_assert(idx < m_upper_bound);
+  const perf_counter_data_any_d& data(m_data[idx - m_lower_bound - 1]);
+  if (!(data.type & PERFCOUNTER_TIME))
+    return utime_t();
+  uint64_t v = data.u64;
+  return utime_t(v / 1000000000ull, v % 1000000000ull);
+}
+
+void PerfCounters::hinc(int idx, int64_t x, int64_t y)
+{
+#ifndef WITH_SEASTAR
+  if (!m_cct->_conf->perf)
+    return;
+#endif
+
+  ceph_assert(idx > m_lower_bound);
+  ceph_assert(idx < m_upper_bound);
+
+  perf_counter_data_any_d& data(m_data[idx - m_lower_bound - 1]);
+  ceph_assert(data.type == (PERFCOUNTER_HISTOGRAM | PERFCOUNTER_COUNTER | PERFCOUNTER_U64));
+  ceph_assert(data.histogram);
+
+  data.histogram->inc(x, y);
+}
+
+pair<uint64_t, uint64_t> PerfCounters::get_tavg_ns(int idx) const
+{
+#ifndef WITH_SEASTAR
+  if (!m_cct->_conf->perf)
+    return make_pair(0, 0);
+#endif
+
+  ceph_assert(idx > m_lower_bound);
+  ceph_assert(idx < m_upper_bound);
+  const perf_counter_data_any_d& data(m_data[idx - m_lower_bound - 1]);
+  if (!(data.type & PERFCOUNTER_TIME))
+    return make_pair(0, 0);
+  if (!(data.type & PERFCOUNTER_LONGRUNAVG))
+    return make_pair(0, 0);
+  pair<uint64_t,uint64_t> a = data.read_avg();
+  return make_pair(a.second, a.first);
+}
+
+void PerfCounters::reset()
+{
+  perf_counter_data_vec_t::iterator d = m_data.begin();
+  perf_counter_data_vec_t::iterator d_end = m_data.end();
+
+  while (d != d_end) {
+    d->reset();
+    ++d;
+  }
+}
+
+void PerfCounters::dump_formatted_generic(Formatter *f, bool schema,
+    bool histograms, const std::string &counter) const
+{
+  f->open_object_section(m_name.c_str());
+  
+  for (perf_counter_data_vec_t::const_iterator d = m_data.begin();
+       d != m_data.end(); ++d) {
+    if (!counter.empty() && counter != d->name) {
+      // Optionally filter on counter name
+      continue;
+    }
+
+    // Switch between normal and histogram view
+    bool is_histogram = (d->type & PERFCOUNTER_HISTOGRAM) != 0;
+    if (is_histogram != histograms) {
+      continue;
+    }
+
+    if (schema) {
+      f->open_object_section(d->name);
+      // we probably should not have exposed this raw field (with bit
+      // values), but existing plugins rely on it so we're stuck with
+      // it.
+      f->dump_int("type", d->type);
+
+      if (d->type & PERFCOUNTER_COUNTER) {
+	f->dump_string("metric_type", "counter");
+      } else {
+	f->dump_string("metric_type", "gauge");
+      }
+
+      if (d->type & PERFCOUNTER_LONGRUNAVG) {
+	if (d->type & PERFCOUNTER_TIME) {
+	  f->dump_string("value_type", "real-integer-pair");
+	} else {
+	  f->dump_string("value_type", "integer-integer-pair");
+	}
+      } else if (d->type & PERFCOUNTER_HISTOGRAM) {
+	if (d->type & PERFCOUNTER_TIME) {
+	  f->dump_string("value_type", "real-2d-histogram");
+	} else {
+	  f->dump_string("value_type", "integer-2d-histogram");
+	}
+      } else {
+	if (d->type & PERFCOUNTER_TIME) {
+	  f->dump_string("value_type", "real");
+	} else {
+	  f->dump_string("value_type", "integer");
+	}
+      }
+
+      f->dump_string("description", d->description ? d->description : "");
+      if (d->nick != NULL) {
+        f->dump_string("nick", d->nick);
+      } else {
+        f->dump_string("nick", "");
+      }
+      f->dump_int("priority", get_adjusted_priority(d->prio));
+      
+      if (d->unit == UNIT_NONE) {
+	f->dump_string("units", "none"); 
+      } else if (d->unit == UNIT_BYTES) {
+	f->dump_string("units", "bytes");
+      }
+      f->close_section();
+    } else {
+      if (d->type & PERFCOUNTER_LONGRUNAVG) {
+	f->open_object_section(d->name);
+	pair<uint64_t,uint64_t> a = d->read_avg();
+	if (d->type & PERFCOUNTER_U64) {
+	  f->dump_unsigned("avgcount", a.second);
+	  f->dump_unsigned("sum", a.first);
+	} else if (d->type & PERFCOUNTER_TIME) {
+	  f->dump_unsigned("avgcount", a.second);
+	  f->dump_format_unquoted("sum", "%" PRId64 ".%09" PRId64,
+				  a.first / 1000000000ull,
+				  a.first % 1000000000ull);
+          uint64_t count = a.second;
+          uint64_t sum_ns = a.first;
+          if (count) {
+            uint64_t avg_ns = sum_ns / count;
+            f->dump_format_unquoted("avgtime", "%" PRId64 ".%09" PRId64,
+                                    avg_ns / 1000000000ull,
+                                    avg_ns % 1000000000ull);
+          } else {
+            f->dump_format_unquoted("avgtime", "%" PRId64 ".%09" PRId64, 0, 0);
+          }
+	} else {
+	  ceph_abort();
+	}
+	f->close_section();
+      } else if (d->type & PERFCOUNTER_HISTOGRAM) {
+        ceph_assert(d->type == (PERFCOUNTER_HISTOGRAM | PERFCOUNTER_COUNTER | PERFCOUNTER_U64));
+        ceph_assert(d->histogram);
+        f->open_object_section(d->name);
+        d->histogram->dump_formatted(f);
+        f->close_section();
+      } else {
+	uint64_t v = d->u64;
+	if (d->type & PERFCOUNTER_U64) {
+	  f->dump_unsigned(d->name, v);
+	} else if (d->type & PERFCOUNTER_TIME) {
+	  f->dump_format_unquoted(d->name, "%" PRId64 ".%09" PRId64,
+				  v / 1000000000ull,
+				  v % 1000000000ull);
+	} else {
+	  ceph_abort();
+	}
+      }
+    }
+  }
+  f->close_section();
+}
+
+const std::string &PerfCounters::get_name() const
+{
+  return m_name;
+}
+
+PerfCounters::PerfCounters(CephContext *cct, const std::string &name,
+	   int lower_bound, int upper_bound)
+  : m_cct(cct),
+    m_lower_bound(lower_bound),
+    m_upper_bound(upper_bound),
+    m_name(name)
+#ifndef WITH_SEASTAR
+    ,
+    m_lock_name(std::string("PerfCounters::") + name.c_str()),
+    m_lock(ceph::make_mutex(m_lock_name))
+#endif
+{
+  m_data.resize(upper_bound - lower_bound - 1);
+}
+
+PerfCountersBuilder::PerfCountersBuilder(CephContext *cct, const std::string &name,
+                  int first, int last)
+  : m_perf_counters(new PerfCounters(cct, name, first, last))
+{
+}
+
+PerfCountersBuilder::~PerfCountersBuilder()
+{
+  if (m_perf_counters)
+    delete m_perf_counters;
+  m_perf_counters = NULL;
+}
+
+void PerfCountersBuilder::add_u64_counter(
+  int idx, const char *name,
+  const char *description, const char *nick, int prio, int unit)
+{
+  add_impl(idx, name, description, nick, prio,
+	   PERFCOUNTER_U64 | PERFCOUNTER_COUNTER, unit);
+}
+
+void PerfCountersBuilder::add_u64(
+  int idx, const char *name,
+  const char *description, const char *nick, int prio, int unit)
+{
+  add_impl(idx, name, description, nick, prio, PERFCOUNTER_U64, unit);
+}
+
+void PerfCountersBuilder::add_u64_avg(
+  int idx, const char *name,
+  const char *description, const char *nick, int prio, int unit)
+{
+  add_impl(idx, name, description, nick, prio,
+	   PERFCOUNTER_U64 | PERFCOUNTER_LONGRUNAVG, unit);
+}
+
+void PerfCountersBuilder::add_time(
+  int idx, const char *name,
+  const char *description, const char *nick, int prio)
+{
+  add_impl(idx, name, description, nick, prio, PERFCOUNTER_TIME);
+}
+
+void PerfCountersBuilder::add_time_avg(
+  int idx, const char *name,
+  const char *description, const char *nick, int prio)
+{
+  add_impl(idx, name, description, nick, prio,
+	   PERFCOUNTER_TIME | PERFCOUNTER_LONGRUNAVG);
+}
+
+void PerfCountersBuilder::add_u64_counter_histogram(
+  int idx, const char *name,
+  PerfHistogramCommon::axis_config_d x_axis_config,
+  PerfHistogramCommon::axis_config_d y_axis_config,
+  const char *description, const char *nick, int prio, int unit)
+{
+  add_impl(idx, name, description, nick, prio,
+	   PERFCOUNTER_U64 | PERFCOUNTER_HISTOGRAM | PERFCOUNTER_COUNTER, unit,
+           unique_ptr<PerfHistogram<>>{new PerfHistogram<>{x_axis_config, y_axis_config}});
+}
+
+void PerfCountersBuilder::add_impl(
+  int idx, const char *name,
+  const char *description, const char *nick, int prio, int ty, int unit,
+  unique_ptr<PerfHistogram<>> histogram)
+{
+  ceph_assert(idx > m_perf_counters->m_lower_bound);
+  ceph_assert(idx < m_perf_counters->m_upper_bound);
+  PerfCounters::perf_counter_data_vec_t &vec(m_perf_counters->m_data);
+  PerfCounters::perf_counter_data_any_d
+    &data(vec[idx - m_perf_counters->m_lower_bound - 1]);
+  ceph_assert(data.type == PERFCOUNTER_NONE);
+  data.name = name;
+  data.description = description;
+  // nick must be <= 4 chars
+  if (nick) {
+    ceph_assert(strlen(nick) <= 4);
+  }
+  data.nick = nick;
+  data.prio = prio ? prio : prio_default;
+  data.type = (enum perfcounter_type_d)ty;
+  data.unit = (enum unit_t) unit;
+  data.histogram = std::move(histogram);
+}
+
+PerfCounters *PerfCountersBuilder::create_perf_counters()
+{
+  PerfCounters::perf_counter_data_vec_t::const_iterator d = m_perf_counters->m_data.begin();
+  PerfCounters::perf_counter_data_vec_t::const_iterator d_end = m_perf_counters->m_data.end();
+  for (; d != d_end; ++d) {
+    ceph_assert(d->type != PERFCOUNTER_NONE);
+    ceph_assert(d->type & (PERFCOUNTER_U64 | PERFCOUNTER_TIME));
+  }
+
+  PerfCounters *ret = m_perf_counters;
+  m_perf_counters = NULL;
+  return ret;
+}
+