/*
- * File: ms_stats.h
- * Author: Mingqiang Zhuang
- *
- * Created on March 25, 2009
- *
- * (c) Copyright 2009, Schooner Information Technology, Inc.
- * http://www.schoonerinfotech.com/
- *
- */
+ +--------------------------------------------------------------------+
+ | libmemcached - C/C++ Client Library for memcached |
+ +--------------------------------------------------------------------+
+ | Redistribution and use in source and binary forms, with or without |
+ | modification, are permitted under the terms of the BSD license. |
+ | You should have received a copy of the license in a bundled file |
+ | named LICENSE; in case you did not receive a copy you can review |
+ | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
+ +--------------------------------------------------------------------+
+ | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
+ | Copyright (c) 2020 Michael Wallner <mike@php.net> |
+ +--------------------------------------------------------------------+
+*/
#include "mem_config.h"
#include <inttypes.h>
#include "ms_stats.h"
-#define array_size(x) (sizeof(x) / sizeof((x)[0]))
+#define array_size(x) (sizeof(x) / sizeof((x)[0]))
static int ms_local_log2(uint64_t value);
static uint64_t ms_get_events(ms_stat_t *stat);
-
/**
* get the index of local log2 array
*
*
* @return return the index of local log2 array
*/
-static int ms_local_log2(uint64_t value)
-{
- int result= 0;
+static int ms_local_log2(uint64_t value) {
+ int result = 0;
- while (result <= 63 && ((uint64_t)1 << result) < value)
- {
+ while (result <= 63 && ((uint64_t) 1 << result) < value) {
result++;
}
return result;
} /* ms_local_log2 */
-
/**
* initialize statistic structure
*
* @param stat, pointer of the statistic structure
* @param name, name of the statistic
*/
-void ms_init_stats(ms_stat_t *stat, const char *name)
-{
+void ms_init_stats(ms_stat_t *stat, const char *name) {
memset(stat, 0, sizeof(*stat));
- stat->name= (char *)name;
- stat->min_time= (uint64_t)-1;
- stat->max_time= 0;
- stat->period_min_time= (uint64_t)-1;
- stat->period_max_time= 0;
- stat->log_product= 0;
- stat->total_time= 0;
- stat->pre_total_time= 0;
- stat->squares= 0;
- stat->pre_squares= 0;
- stat->pre_events= 0;
- stat->pre_log_product= 0;
- stat->get_miss= 0;
- stat->pre_get_miss= 0;
+ stat->name = (char *) name;
+ stat->min_time = (uint64_t) -1;
+ stat->max_time = 0;
+ stat->period_min_time = (uint64_t) -1;
+ stat->period_max_time = 0;
+ stat->log_product = 0;
+ stat->total_time = 0;
+ stat->pre_total_time = 0;
+ stat->squares = 0;
+ stat->pre_squares = 0;
+ stat->pre_events = 0;
+ stat->pre_log_product = 0;
+ stat->get_miss = 0;
+ stat->pre_get_miss = 0;
} /* ms_init_stats */
-
/**
* record one event
*
* @param total_time, response time of the command
* @param get_miss, whether it gets miss
*/
-void ms_record_event(ms_stat_t *stat, uint64_t total_time, int get_miss)
-{
- stat->total_time+= total_time;
+void ms_record_event(ms_stat_t *stat, uint64_t total_time, int get_miss) {
+ stat->total_time += total_time;
- if (total_time < stat->min_time)
- {
- stat->min_time= total_time;
+ if (total_time < stat->min_time) {
+ stat->min_time = total_time;
}
- if (total_time > stat->max_time)
- {
- stat->max_time= total_time;
+ if (total_time > stat->max_time) {
+ stat->max_time = total_time;
}
- if (total_time < stat->period_min_time)
- {
- stat->period_min_time= total_time;
+ if (total_time < stat->period_min_time) {
+ stat->period_min_time = total_time;
}
- if (total_time > stat->period_max_time)
- {
- stat->period_max_time= total_time;
+ if (total_time > stat->period_max_time) {
+ stat->period_max_time = total_time;
}
- if (get_miss)
- {
+ if (get_miss) {
stat->get_miss++;
}
stat->dist[ms_local_log2(total_time)]++;
- stat->squares+= (double)(total_time * total_time);
+ stat->squares += (double) (total_time * total_time);
- if (total_time != 0)
- {
- stat->log_product+= log((double)total_time);
+ if (total_time) {
+ stat->log_product += log((double) total_time);
}
} /* ms_record_event */
-
/**
* get the events count
*
*
* @return total events recorded
*/
-static uint64_t ms_get_events(ms_stat_t *stat)
-{
- uint64_t events= 0;
+static uint64_t ms_get_events(ms_stat_t *stat) {
+ uint64_t events = 0;
- for (uint32_t i= 0; i < array_size(stat->dist); i++)
- {
- events+= stat->dist[i];
+ for (uint32_t i = 0; i < array_size(stat->dist); i++) {
+ events += stat->dist[i];
}
return events;
} /* ms_get_events */
-
/**
* dump the statistics
*
* @param stat, pointer of the statistic structure
*/
-void ms_dump_stats(ms_stat_t *stat)
-{
- uint64_t events= 0;
- int max_non_zero= 0;
- int min_non_zero= 0;
- double average= 0;
-
- for (uint32_t i= 0; i < array_size(stat->dist); i++)
- {
- events+= stat->dist[i];
- if (stat->dist[i] != 0)
- {
- max_non_zero= (int)i;
+void ms_dump_stats(ms_stat_t *stat) {
+ uint64_t events = 0;
+ int max_non_zero = 0;
+ int min_non_zero = 0;
+ double average = 0;
+
+ for (uint32_t i = 0; i < array_size(stat->dist); i++) {
+ events += stat->dist[i];
+ if (stat->dist[i]) {
+ max_non_zero = (int) i;
}
}
- if (events == 0)
- {
+ if (events == 0) {
return;
}
- average= (double)(stat->total_time / events);
+ average = (double) (stat->total_time / events);
- printf("%s Statistics (%lld events)\n", stat->name, (long long)events);
- printf(" Min: %8lld\n", (long long)stat->min_time);
- printf(" Max: %8lld\n", (long long)stat->max_time);
- printf(" Avg: %8lld\n", (long long)(stat->total_time / events));
- printf(" Geo: %8.2lf\n", exp(stat->log_product / (double)events));
+ printf("%s Statistics (%lld events)\n", stat->name, (long long) events);
+ printf(" Min: %8lld\n", (long long) stat->min_time);
+ printf(" Max: %8lld\n", (long long) stat->max_time);
+ printf(" Avg: %8lld\n", (long long) (stat->total_time / events));
+ printf(" Geo: %8.2lf\n", exp(stat->log_product / (double) events));
- if (events > 1)
- {
+ if (events > 1) {
printf(" Std: %8.2lf\n",
- sqrt((stat->squares - (double)events * average
- * average) / ((double)events - 1)));
+ sqrt((stat->squares - (double) events * average * average) / ((double) events - 1)));
}
printf(" Log2 Dist:");
- for (int i= 0; i <= max_non_zero - 4; i+= 4)
- {
- if ((stat->dist[i + 0] != 0)
- || (stat->dist[i + 1] != 0)
- || (stat->dist[i + 2] != 0)
- || (stat->dist[i + 3] != 0))
+ for (int i = 0; i <= max_non_zero - 4; i += 4) {
+ if ((stat->dist[i + 0]) || (stat->dist[i + 1]) || (stat->dist[i + 2])
+ || (stat->dist[i + 3]))
{
- min_non_zero= i;
+ min_non_zero = i;
break;
}
}
- for (int i= min_non_zero; i <= max_non_zero; i++)
- {
- if ((i % 4) == 0)
- {
- printf("\n %2d:", (int)i);
+ for (int i = min_non_zero; i <= max_non_zero; i++) {
+ if ((i % 4) == 0) {
+ printf("\n %2d:", (int) i);
}
- printf(" %6" PRIu64 , stat->dist[i]);
+ printf(" %6" PRIu64, stat->dist[i]);
}
printf("\n\n");
} /* ms_dump_stats */
-
/**
* dump the format statistics
*
* @param freq, statistic frequency
* @param obj_size, average object size
*/
-void ms_dump_format_stats(ms_stat_t *stat,
- int run_time,
- int freq,
- int obj_size)
-{
- uint64_t events= 0;
- double global_average= 0;
- uint64_t global_tps= 0;
- double global_rate= 0;
- double global_std= 0;
- double global_log= 0;
-
- double period_average= 0;
- uint64_t period_tps= 0;
- double period_rate= 0;
- double period_std= 0;
- double period_log= 0;
-
- if ((events= ms_get_events(stat)) == 0)
- {
+void ms_dump_format_stats(ms_stat_t *stat, int run_time, int freq, int obj_size) {
+ uint64_t events = 0;
+ double global_average = 0;
+ uint64_t global_tps = 0;
+ double global_rate = 0;
+ double global_std = 0;
+ double global_log = 0;
+
+ double period_average = 0;
+ uint64_t period_tps = 0;
+ double period_rate = 0;
+ double period_std = 0;
+ double period_log = 0;
+
+ if ((events = ms_get_events(stat)) == 0) {
return;
}
- global_average= (double)(stat->total_time / events);
- global_tps= events / (uint64_t)run_time;
- global_rate= (double)events * obj_size / 1024 / 1024 / run_time;
- global_std= sqrt((stat->squares - (double)events * global_average
- * global_average) / (double)(events - 1));
- global_log= exp(stat->log_product / (double)events);
-
- uint64_t diff_time= stat->total_time - stat->pre_total_time;
- uint64_t diff_events= events - stat->pre_events;
- if (diff_events >= 1)
- {
- period_average= (double)(diff_time / diff_events);
- period_tps= diff_events / (uint64_t)freq;
- period_rate= (double)diff_events * obj_size / 1024 / 1024 / freq;
- double diff_squares= (double)stat->squares - (double)stat->pre_squares;
- period_std= sqrt((diff_squares - (double)diff_events * period_average
- * period_average) / (double)(diff_events - 1));
- double diff_log_product= stat->log_product - stat->pre_log_product;
- period_log= exp(diff_log_product / (double)diff_events);
+ global_average = (double) (stat->total_time / events);
+ global_tps = events / (uint64_t) run_time;
+ global_rate = (double) events * obj_size / 1024 / 1024 / run_time;
+ global_std = sqrt((stat->squares - (double) events * global_average * global_average)
+ / (double) (events - 1));
+ global_log = exp(stat->log_product / (double) events);
+
+ uint64_t diff_time = stat->total_time - stat->pre_total_time;
+ uint64_t diff_events = events - stat->pre_events;
+ if (diff_events >= 1) {
+ period_average = (double) (diff_time / diff_events);
+ period_tps = diff_events / (uint64_t) freq;
+ period_rate = (double) diff_events * obj_size / 1024 / 1024 / freq;
+ double diff_squares = (double) stat->squares - (double) stat->pre_squares;
+ period_std = sqrt((diff_squares - (double) diff_events * period_average * period_average)
+ / (double) (diff_events - 1));
+ double diff_log_product = stat->log_product - stat->pre_log_product;
+ period_log = exp(diff_log_product / (double) diff_events);
}
printf("%s Statistics\n", stat->name);
- printf("%-8s %-8s %-12s %-12s %-10s %-10s %-8s %-10s %-10s %-10s %-10s\n",
- "Type",
- "Time(s)",
- "Ops",
- "TPS(ops/s)",
- "Net(M/s)",
- "Get_miss",
- "Min(us)",
- "Max(us)",
- "Avg(us)",
- "Std_dev",
+ printf("%-8s %-8s %-12s %-12s %-10s %-10s %-8s %-10s %-10s %-10s %-10s\n", "Type", "Time(s)",
+ "Ops", "TPS(ops/s)", "Net(M/s)", "Get_miss", "Min(us)", "Max(us)", "Avg(us)", "Std_dev",
"Geo_dist");
- printf(
- "%-8s %-8d %-12llu %-12lld %-10.1f %-10lld %-8lld %-10lld %-10lld %-10.2f %.2f\n",
- "Period",
- freq,
- (long long)diff_events,
- (long long)period_tps,
- global_rate,
- (long long)(stat->get_miss - stat->pre_get_miss),
- (long long)stat->period_min_time,
- (long long)stat->period_max_time,
- (long long)period_average,
- period_std,
- period_log);
-
- printf(
- "%-8s %-8d %-12llu %-12lld %-10.1f %-10lld %-8lld %-10lld %-10lld %-10.2f %.2f\n\n",
- "Global",
- run_time,
- (long long)events,
- (long long)global_tps,
- period_rate,
- (long long)stat->get_miss,
- (long long)stat->min_time,
- (long long)stat->max_time,
- (long long)global_average,
- global_std,
- global_log);
-
- stat->pre_events= events;
- stat->pre_squares= (uint64_t)stat->squares;
- stat->pre_total_time= stat->total_time;
- stat->pre_log_product= stat->log_product;
- stat->period_min_time= (uint64_t)-1;
- stat->period_max_time= 0;
- stat->pre_get_miss= stat->get_miss;
+ printf("%-8s %-8d %-12llu %-12lld %-10.1f %-10lld %-8lld %-10lld %-10lld %-10.2f %.2f\n",
+ "Period", freq, (long long) diff_events, (long long) period_tps, global_rate,
+ (long long) (stat->get_miss - stat->pre_get_miss), (long long) stat->period_min_time,
+ (long long) stat->period_max_time, (long long) period_average, period_std, period_log);
+
+ printf("%-8s %-8d %-12llu %-12lld %-10.1f %-10lld %-8lld %-10lld %-10lld %-10.2f %.2f\n\n",
+ "Global", run_time, (long long) events, (long long) global_tps, period_rate,
+ (long long) stat->get_miss, (long long) stat->min_time, (long long) stat->max_time,
+ (long long) global_average, global_std, global_log);
+
+ stat->pre_events = events;
+ stat->pre_squares = (uint64_t) stat->squares;
+ stat->pre_total_time = stat->total_time;
+ stat->pre_log_product = stat->log_product;
+ stat->period_min_time = (uint64_t) -1;
+ stat->period_max_time = 0;
+ stat->pre_get_miss = stat->get_miss;
} /* ms_dump_format_stats */
projects / m6w6 / libmemcached / blobdiff