Merging upstream version 1.14.0~rc0.

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

1 files changed, 623 insertions, 0 deletions

diff --git a/tests/profile/benchmark-value-pairs.c b/tests/profile/benchmark-value-pairs.c
new file mode 100644
index 000000000..ae4f53c3a
--- /dev/null
+++ b/tests/profile/benchmark-value-pairs.c
@@ -0,0 +1,623 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+
+#include "config.h"
+#include "libnetdata/libnetdata.h"
+
+#ifdef simple_hash
+#undef simple_hash
+#endif
+
+void netdata_cleanup_and_exit(int ret) {
+    exit(ret);
+}
+
+#define simple_hash(name) ({                                         \
+    register unsigned char *__hash_source = (unsigned char *)(name); \
+    register uint32_t __hash_value = 0x811c9dc5;                     \
+    while (*__hash_source) {                                         \
+        __hash_value *= 16777619;                                    \
+        __hash_value ^= (uint32_t) *__hash_source++;                 \
+    }                                                                \
+    __hash_value;                                                    \
+})
+
+static inline uint32_t simple_hash2(const char *name) {
+    register unsigned char *s = (unsigned char *)name;
+    register uint32_t hval = 0x811c9dc5;
+    while (*s) {
+        hval *= 16777619;
+        hval ^= (uint32_t) *s++;
+    }
+    return hval;
+}
+
+static inline unsigned long long fast_strtoull(const char *s) {
+  register unsigned long long n = 0;
+  register char c;
+  for(c = *s; c >= '0' && c <= '9' ; c = *(++s)) {
+    n *= 10;
+    n += c - '0';
+    // n = (n << 1) + (n << 3) + (c - '0');
+  }
+  return n;
+}
+
+static uint32_t cache_hash = 0;
+static uint32_t rss_hash = 0;
+static uint32_t rss_huge_hash = 0;
+static uint32_t mapped_file_hash = 0;
+static uint32_t writeback_hash = 0;
+static uint32_t dirty_hash = 0;
+static uint32_t swap_hash = 0;
+static uint32_t pgpgin_hash = 0;
+static uint32_t pgpgout_hash = 0;
+static uint32_t pgfault_hash = 0;
+static uint32_t pgmajfault_hash = 0;
+static uint32_t inactive_anon_hash = 0;
+static uint32_t active_anon_hash = 0;
+static uint32_t inactive_file_hash = 0;
+static uint32_t active_file_hash = 0;
+static uint32_t unevictable_hash = 0;
+static uint32_t hierarchical_memory_limit_hash = 0;
+static uint32_t total_cache_hash = 0;
+static uint32_t total_rss_hash = 0;
+static uint32_t total_rss_huge_hash = 0;
+static uint32_t total_mapped_file_hash = 0;
+static uint32_t total_writeback_hash = 0;
+static uint32_t total_dirty_hash = 0;
+static uint32_t total_swap_hash = 0;
+static uint32_t total_pgpgin_hash = 0;
+static uint32_t total_pgpgout_hash = 0;
+static uint32_t total_pgfault_hash = 0;
+static uint32_t total_pgmajfault_hash = 0;
+static uint32_t total_inactive_anon_hash = 0;
+static uint32_t total_active_anon_hash = 0;
+static uint32_t total_inactive_file_hash = 0;
+static uint32_t total_active_file_hash = 0;
+static uint32_t total_unevictable_hash = 0;
+
+unsigned long long values1[50] = { 0 };
+unsigned long long values2[50] = { 0 };
+unsigned long long values3[50] = { 0 };
+unsigned long long values4[50] = { 0 };
+unsigned long long values5[50] = { 0 };
+unsigned long long values6[50] = { 0 };
+unsigned long long values7[50] = { 0 };
+unsigned long long values8[50] = { 0 };
+unsigned long long values9[50] = { 0 };
+
+struct pair {
+    const char *name;
+    const char *value;
+    uint32_t hash;
+    unsigned long long *collected8;
+    unsigned long long *collected9;
+} pairs[] = {
+        { "cache",                      "12345678901234", 0, &values8[0]  ,&values9[0] },
+        { "rss",                        "23456789012345", 0, &values8[1]  ,&values9[1] },
+        { "rss_huge",                   "34567890123456", 0, &values8[2]  ,&values9[2] },
+        { "mapped_file",                "45678901234567", 0, &values8[3]  ,&values9[3] },
+        { "writeback",                  "56789012345678", 0, &values8[4]  ,&values9[4] },
+        { "dirty",                      "67890123456789", 0, &values8[5]  ,&values9[5] },
+        { "swap",                       "78901234567890", 0, &values8[6]  ,&values9[6] },
+        { "pgpgin",                     "89012345678901", 0, &values8[7]  ,&values9[7] },
+        { "pgpgout",                    "90123456789012", 0, &values8[8]  ,&values9[8] },
+        { "pgfault",                    "10345678901234", 0, &values8[9]  ,&values9[9] },
+        { "pgmajfault",                 "11456789012345", 0, &values8[10] ,&values9[10] },
+        { "inactive_anon",              "12000000000000", 0, &values8[11] ,&values9[11] },
+        { "active_anon",                "13345678901234", 0, &values8[12] ,&values9[12] },
+        { "inactive_file",              "14345678901234", 0, &values8[13] ,&values9[13] },
+        { "active_file",                "15345678901234", 0, &values8[14] ,&values9[14] },
+        { "unevictable",                "16345678901234", 0, &values8[15] ,&values9[15] },
+        { "hierarchical_memory_limit",  "17345678901234", 0, &values8[16] ,&values9[16] },
+        { "total_cache",                "18345678901234", 0, &values8[17] ,&values9[17] },
+        { "total_rss",                  "19345678901234", 0, &values8[18] ,&values9[18] },
+        { "total_rss_huge",             "20345678901234", 0, &values8[19] ,&values9[19] },
+        { "total_mapped_file",          "21345678901234", 0, &values8[20] ,&values9[20] },
+        { "total_writeback",            "22345678901234", 0, &values8[21] ,&values9[21] },
+        { "total_dirty",                "23000000000000", 0, &values8[22] ,&values9[22] },
+        { "total_swap",                 "24345678901234", 0, &values8[23] ,&values9[23] },
+        { "total_pgpgin",               "25345678901234", 0, &values8[24] ,&values9[24] },
+        { "total_pgpgout",              "26345678901234", 0, &values8[25] ,&values9[25] },
+        { "total_pgfault",              "27345678901234", 0, &values8[26] ,&values9[26] },
+        { "total_pgmajfault",           "28345678901234", 0, &values8[27] ,&values9[27] },
+        { "total_inactive_anon",        "29345678901234", 0, &values8[28] ,&values9[28] },
+        { "total_active_anon",          "30345678901234", 0, &values8[29] ,&values9[29] },
+        { "total_inactive_file",        "31345678901234", 0, &values8[30] ,&values9[30] },
+        { "total_active_file",          "32345678901234", 0, &values8[31] ,&values9[31] },
+        { "total_unevictable",          "33345678901234", 0, &values8[32] ,&values9[32] },
+        { NULL,                         NULL            , 0, NULL         ,NULL         }
+};
+
+// simple system strcmp()
+void test1() {
+  int i;
+  for(i = 0; pairs[i].name ; i++) {
+    const char *s = pairs[i].name;
+    const char *v = pairs[i].value;
+
+    if(unlikely(!strcmp(s, "cache")))
+      values1[i] = strtoull(v, NULL, 10);
+
+    else if(unlikely(!strcmp(s, "rss")))
+      values1[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(!strcmp(s, "rss_huge")))
+      values1[i] = strtoull(v, NULL, 10);
+  
+    else if(unlikely(!strcmp(s, "mapped_file")))
+      values1[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(!strcmp(s, "writeback")))
+      values1[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(!strcmp(s, "dirty")))
+      values1[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(!strcmp(s, "swap")))
+      values1[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(!strcmp(s, "pgpgin")))
+      values1[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(!strcmp(s, "pgpgout")))
+      values1[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(!strcmp(s, "pgfault")))
+      values1[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(!strcmp(s, "pgmajfault")))
+      values1[i] = strtoull(v, NULL, 10);
+  }
+}
+
+// inline simple_hash() with system strtoull()
+void test2() {
+    int i;
+    for(i = 0; pairs[i].name ; i++) {
+        const char *s = pairs[i].name;
+        const char *v = pairs[i].value;
+
+    uint32_t hash = simple_hash2(s);
+
+    if(unlikely(hash == cache_hash && !strcmp(s, "cache")))
+      values2[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(hash == rss_hash && !strcmp(s, "rss")))
+      values2[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(hash == rss_huge_hash && !strcmp(s, "rss_huge")))
+      values2[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(hash == mapped_file_hash && !strcmp(s, "mapped_file")))
+      values2[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(hash == writeback_hash && !strcmp(s, "writeback")))
+      values2[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(hash == dirty_hash && !strcmp(s, "dirty")))
+      values2[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(hash == swap_hash && !strcmp(s, "swap")))
+      values2[i] = strtoull(v, NULL, 10);
+  
+    else if(unlikely(hash == pgpgin_hash && !strcmp(s, "pgpgin")))
+      values2[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(hash == pgpgout_hash && !strcmp(s, "pgpgout")))
+      values2[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(hash == pgfault_hash && !strcmp(s, "pgfault")))
+      values2[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(hash == pgmajfault_hash && !strcmp(s, "pgmajfault")))
+      values2[i] = strtoull(v, NULL, 10);
+  }
+}
+
+// statement expression simple_hash(), system strtoull()
+void test3() {
+    int i;
+    for(i = 0; pairs[i].name ; i++) {
+        const char *s = pairs[i].name;
+        const char *v = pairs[i].value;
+
+    uint32_t hash = simple_hash(s);
+
+    if(unlikely(hash == cache_hash && !strcmp(s, "cache")))
+      values3[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(hash == rss_hash && !strcmp(s, "rss")))
+      values3[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(hash == rss_huge_hash && !strcmp(s, "rss_huge")))
+      values3[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(hash == mapped_file_hash && !strcmp(s, "mapped_file")))
+      values3[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(hash == writeback_hash && !strcmp(s, "writeback")))
+      values3[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(hash == dirty_hash && !strcmp(s, "dirty")))
+      values3[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(hash == swap_hash && !strcmp(s, "swap")))
+      values3[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(hash == pgpgin_hash && !strcmp(s, "pgpgin")))
+      values3[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(hash == pgpgout_hash && !strcmp(s, "pgpgout")))
+      values3[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(hash == pgfault_hash && !strcmp(s, "pgfault")))
+      values3[i] = strtoull(v, NULL, 10);
+    
+    else if(unlikely(hash == pgmajfault_hash && !strcmp(s, "pgmajfault")))
+      values3[i] = strtoull(v, NULL, 10);
+  }
+}
+
+
+// inline simple_hash(), if-continue checks
+void test4() {
+    int i;
+    for(i = 0; pairs[i].name ; i++) {
+        const char *s = pairs[i].name;
+        const char *v = pairs[i].value;
+
+    uint32_t hash = simple_hash2(s);
+
+    if(unlikely(hash == cache_hash && !strcmp(s, "cache"))) {
+      values4[i] = strtoull(v, NULL, 0);
+      continue;
+    }
+
+    if(unlikely(hash == rss_hash && !strcmp(s, "rss"))) {
+      values4[i] = strtoull(v, NULL, 0);
+      continue;
+    }
+    
+    if(unlikely(hash == rss_huge_hash && !strcmp(s, "rss_huge"))) {
+      values4[i] = strtoull(v, NULL, 0);
+      continue;
+    }
+    
+    if(unlikely(hash == mapped_file_hash && !strcmp(s, "mapped_file"))) {
+      values4[i] = strtoull(v, NULL, 0);
+      continue;
+    }
+    
+    if(unlikely(hash == writeback_hash && !strcmp(s, "writeback"))) {
+      values4[i] = strtoull(v, NULL, 0);
+      continue;
+    }
+    
+    if(unlikely(hash == dirty_hash && !strcmp(s, "dirty"))) {
+      values4[i] = strtoull(v, NULL, 0);
+      continue;
+    }
+    
+    if(unlikely(hash == swap_hash && !strcmp(s, "swap"))) {
+      values4[i] = strtoull(v, NULL, 0);
+      continue;
+    }
+    
+    if(unlikely(hash == pgpgin_hash && !strcmp(s, "pgpgin"))) {
+      values4[i] = strtoull(v, NULL, 0);
+      continue;
+    }
+    
+    if(unlikely(hash == pgpgout_hash && !strcmp(s, "pgpgout"))) {
+      values4[i] = strtoull(v, NULL, 0);
+      continue;
+    }
+    
+    if(unlikely(hash == pgfault_hash && !strcmp(s, "pgfault"))) {
+      values4[i] = strtoull(v, NULL, 0);
+      continue;
+    }
+    
+    if(unlikely(hash == pgmajfault_hash && !strcmp(s, "pgmajfault"))) {
+      values4[i] = strtoull(v, NULL, 0);
+      continue;
+    }
+  }
+}
+
+// inline simple_hash(), if-else-if-else-if (netdata default)
+void test5() {
+    int i;
+    for(i = 0; pairs[i].name ; i++) {
+        const char *s = pairs[i].name;
+        const char *v = pairs[i].value;
+
+    uint32_t hash = simple_hash2(s);
+
+    if(unlikely(hash == cache_hash && !strcmp(s, "cache")))
+      values5[i] = fast_strtoull(v);
+    
+    else if(unlikely(hash == rss_hash && !strcmp(s, "rss")))
+      values5[i] = fast_strtoull(v);
+    
+    else if(unlikely(hash == rss_huge_hash && !strcmp(s, "rss_huge")))
+      values5[i] = fast_strtoull(v);
+    
+    else if(unlikely(hash == mapped_file_hash && !strcmp(s, "mapped_file")))
+      values5[i] = fast_strtoull(v);
+    
+    else if(unlikely(hash == writeback_hash && !strcmp(s, "writeback")))
+      values5[i] = fast_strtoull(v);
+    
+    else if(unlikely(hash == dirty_hash && !strcmp(s, "dirty")))
+      values5[i] = fast_strtoull(v);
+    
+    else if(unlikely(hash == swap_hash && !strcmp(s, "swap")))
+      values5[i] = fast_strtoull(v);
+  
+    else if(unlikely(hash == pgpgin_hash && !strcmp(s, "pgpgin")))
+      values5[i] = fast_strtoull(v);
+    
+    else if(unlikely(hash == pgpgout_hash && !strcmp(s, "pgpgout")))
+      values5[i] = fast_strtoull(v);
+    
+    else if(unlikely(hash == pgfault_hash && !strcmp(s, "pgfault")))
+      values5[i] = fast_strtoull(v);
+    
+    else if(unlikely(hash == pgmajfault_hash && !strcmp(s, "pgmajfault")))
+      values5[i] = fast_strtoull(v);
+  }
+}
+
+// ----------------------------------------------------------------------------
+
+void arl_strtoull(const char *name, uint32_t hash, const char *value, void *dst) {
+    (void)name;
+    (void)hash;
+
+    register unsigned long long *d = dst;
+    *d = strtoull(value, NULL, 10);
+    // fprintf(stderr, "name '%s' with hash %u and value '%s' is %llu\n", name, hash, value, *d);
+}
+
+void test6() {
+    static ARL_BASE *base = NULL;
+
+    if(unlikely(!base)) {
+        base = arl_create("test6", arl_strtoull, 60);
+        arl_expect_custom(base, "cache",       NULL, &values6[0]);
+        arl_expect_custom(base, "rss",         NULL, &values6[1]);
+        arl_expect_custom(base, "rss_huge",    NULL, &values6[2]);
+        arl_expect_custom(base, "mapped_file", NULL, &values6[3]);
+        arl_expect_custom(base, "writeback",   NULL, &values6[4]);
+        arl_expect_custom(base, "dirty",       NULL, &values6[5]);
+        arl_expect_custom(base, "swap",        NULL, &values6[6]);
+        arl_expect_custom(base, "pgpgin",      NULL, &values6[7]);
+        arl_expect_custom(base, "pgpgout",     NULL, &values6[8]);
+        arl_expect_custom(base, "pgfault",     NULL, &values6[9]);
+        arl_expect_custom(base, "pgmajfault",  NULL, &values6[10]);
+    }
+
+    arl_begin(base);
+
+    int i;
+    for(i = 0; pairs[i].name ; i++)
+        if(arl_check(base, pairs[i].name, pairs[i].value)) break;
+}
+
+void arl_str2ull(const char *name, uint32_t hash, const char *value, void *dst) {
+    (void)name;
+    (void)hash;
+
+    register unsigned long long *d = dst;
+    *d = str2ull(value);
+    // fprintf(stderr, "name '%s' with hash %u and value '%s' is %llu\n", name, hash, value, *d);
+}
+
+void test7() {
+    static ARL_BASE *base = NULL;
+
+    if(unlikely(!base)) {
+        base = arl_create("test7", arl_str2ull, 60);
+        arl_expect_custom(base, "cache",       NULL, &values7[0]);
+        arl_expect_custom(base, "rss",         NULL, &values7[1]);
+        arl_expect_custom(base, "rss_huge",    NULL, &values7[2]);
+        arl_expect_custom(base, "mapped_file", NULL, &values7[3]);
+        arl_expect_custom(base, "writeback",   NULL, &values7[4]);
+        arl_expect_custom(base, "dirty",       NULL, &values7[5]);
+        arl_expect_custom(base, "swap",        NULL, &values7[6]);
+        arl_expect_custom(base, "pgpgin",      NULL, &values7[7]);
+        arl_expect_custom(base, "pgpgout",     NULL, &values7[8]);
+        arl_expect_custom(base, "pgfault",     NULL, &values7[9]);
+        arl_expect_custom(base, "pgmajfault",  NULL, &values7[10]);
+    }
+
+    arl_begin(base);
+
+    int i;
+    for(i = 0; pairs[i].name ; i++)
+        if(arl_check(base, pairs[i].name, pairs[i].value)) break;
+}
+
+void test8() {
+    int i;
+    for(i = 0; pairs[i].name; i++) {
+        uint32_t hash = simple_hash(pairs[i].name);
+
+        int j;
+        for(j = 0; pairs[j].name; j++) {
+            if(hash == pairs[j].hash && !strcmp(pairs[i].name, pairs[j].name)) {
+                *pairs[j].collected8 = strtoull(pairs[i].value, NULL, 10);
+                break;
+            }
+        }
+    }
+}
+
+void test9() {
+    int i;
+    for(i = 0; pairs[i].name; i++) {
+        uint32_t hash = simple_hash(pairs[i].name);
+
+        int j;
+        for(j = 0; pairs[j].name; j++) {
+            if(hash == pairs[j].hash && !strcmp(pairs[i].name, pairs[j].name)) {
+                *pairs[j].collected9 = str2ull(pairs[i].value);
+                break;
+            }
+        }
+    }
+}
+
+// ----------------------------------------------------------------------------
+
+/*
+// ==============
+// --- Poor man cycle counting.
+static unsigned long tsc;
+
+static void begin_tsc(void)
+{
+  unsigned long a, d;
+  asm volatile ("cpuid\nrdtsc" : "=a" (a), "=d" (d) : "0" (0) : "ebx", "ecx");
+  tsc = ((unsigned long)d << 32) | (unsigned long)a;
+}
+
+static unsigned long end_tsc(void)
+{
+  unsigned long a, d;
+  asm volatile ("rdtscp" : "=a" (a), "=d" (d) : : "ecx");
+  return (((unsigned long)d << 32) | (unsigned long)a) - tsc;
+}
+// ===============
+*/
+
+static unsigned long long clk;
+
+static void begin_clock() {
+    struct timeval tv;
+    if(unlikely(gettimeofday(&tv, NULL) == -1))
+        return;
+    clk = tv.tv_sec  * 1000000 + tv.tv_usec;
+}
+
+static unsigned long long end_clock() {
+    struct timeval tv;
+    if(unlikely(gettimeofday(&tv, NULL) == -1))
+        return -1;
+    return clk = tv.tv_sec  * 1000000 + tv.tv_usec - clk;
+}
+
+int main(void)
+{
+    {
+        int i;
+        for(i = 0; pairs[i].name; i++)
+            pairs[i].hash = simple_hash(pairs[i].name);
+    }
+
+    cache_hash = simple_hash("cache");
+    rss_hash = simple_hash("rss");
+    rss_huge_hash = simple_hash("rss_huge");
+    mapped_file_hash = simple_hash("mapped_file");
+    writeback_hash = simple_hash("writeback");
+    dirty_hash = simple_hash("dirty");
+    swap_hash = simple_hash("swap");
+    pgpgin_hash = simple_hash("pgpgin");
+    pgpgout_hash = simple_hash("pgpgout");
+    pgfault_hash = simple_hash("pgfault");
+    pgmajfault_hash = simple_hash("pgmajfault");
+    inactive_anon_hash = simple_hash("inactive_anon");
+    active_anon_hash = simple_hash("active_anon");
+    inactive_file_hash = simple_hash("inactive_file");
+    active_file_hash = simple_hash("active_file");
+    unevictable_hash = simple_hash("unevictable");
+    hierarchical_memory_limit_hash = simple_hash("hierarchical_memory_limit");
+    total_cache_hash = simple_hash("total_cache");
+    total_rss_hash = simple_hash("total_rss");
+    total_rss_huge_hash = simple_hash("total_rss_huge");
+    total_mapped_file_hash = simple_hash("total_mapped_file");
+    total_writeback_hash = simple_hash("total_writeback");
+    total_dirty_hash = simple_hash("total_dirty");
+    total_swap_hash = simple_hash("total_swap");
+    total_pgpgin_hash = simple_hash("total_pgpgin");
+    total_pgpgout_hash = simple_hash("total_pgpgout");
+    total_pgfault_hash = simple_hash("total_pgfault");
+    total_pgmajfault_hash = simple_hash("total_pgmajfault");
+    total_inactive_anon_hash = simple_hash("total_inactive_anon");
+    total_active_anon_hash = simple_hash("total_active_anon");
+    total_inactive_file_hash = simple_hash("total_inactive_file");
+    total_active_file_hash = simple_hash("total_active_file");
+    total_unevictable_hash = simple_hash("total_unevictable");
+
+    // cache functions
+    (void)simple_hash2("hello world");
+    (void)strcmp("1", "2");
+    (void)strtoull("123", NULL, 0);
+
+  unsigned long i, c1 = 0, c2 = 0, c3 = 0, c4 = 0, c5 = 0, c6 = 0, c7 = 0, c8 = 0, c9 = 0;
+  unsigned long max = 1000000;
+
+  begin_clock();
+  for(i = 0; i <= max ;i++) test1();
+  c1 = end_clock();
+
+  begin_clock();
+  for(i = 0; i <= max ;i++) test2();
+  c2 = end_clock();
+    
+  begin_clock();
+  for(i = 0; i <= max ;i++) test3();
+  c3 = end_clock();
+
+  begin_clock();
+  for(i = 0; i <= max ;i++) test4();
+  c4 = end_clock();
+
+  begin_clock();
+  for(i = 0; i <= max ;i++) test5();
+  c5 = end_clock();
+
+    begin_clock();
+    for(i = 0; i <= max ;i++) test6();
+    c6 = end_clock();
+
+    begin_clock();
+    for(i = 0; i <= max ;i++) test7();
+    c7 = end_clock();
+
+    begin_clock();
+    for(i = 0; i <= max ;i++) test8();
+    c8 = end_clock();
+
+    begin_clock();
+    for(i = 0; i <= max ;i++) test9();
+    c9 = end_clock();
+
+    for(i = 0; i < 11 ; i++)
+        printf("value %lu: %llu %llu %llu %llu %llu %llu %llu %llu %llu\n", i, values1[i], values2[i], values3[i], values4[i], values5[i], values6[i], values7[i], values8[i], values9[i]);
+  
+  printf("\n\nRESULTS\n");
+  printf("test1() [1] in %lu usecs: simple system strcmp().\n"
+         "test2() [4] in %lu usecs: inline simple_hash() with system strtoull().\n"
+         "test3() [5] in %lu usecs: statement expression simple_hash(), system strtoull().\n"
+         "test4() [6] in %lu usecs: inline simple_hash(), if-continue checks.\n"
+         "test5() [7] in %lu usecs: inline simple_hash(), if-else-if-else-if (netdata default prior to ARL).\n"
+         "test6() [8] in %lu usecs: adaptive re-sortable array with strtoull() (wow!)\n"
+         "test7() [9] in %lu usecs: adaptive re-sortable array with str2ull() (wow!)\n"
+         "test8() [2] in %lu usecs: nested loop with strtoull()\n"
+         "test9() [3] in %lu usecs: nested loop with str2ull()\n"
+         , c1
+         , c2
+         , c3
+         , c4
+         , c5
+         , c6
+         , c7
+         , c8
+         , c9
+         );
+
+  return 0;
+}