mirror of
https://github.com/gperftools/gperftools
synced 2024-12-21 23:09:57 +00:00
962aa53c55
This also makes them output nicer results. I.e. every benchmark is run 3 times and iteration duration is printed for every run. While this is still very synthetic and unrepresentave of malloc performance as a whole, it is exercising more situations in tcmalloc fastpath. So it a step forward.
113 lines
3.3 KiB
C
113 lines
3.3 KiB
C
// -*- Mode: C; c-basic-offset: 2; indent-tabs-mode: nil -*-
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions are
|
|
// met:
|
|
//
|
|
// * Redistributions of source code must retain the above copyright
|
|
// notice, this list of conditions and the following disclaimer.
|
|
// * Redistributions in binary form must reproduce the above
|
|
// copyright notice, this list of conditions and the following disclaimer
|
|
// in the documentation and/or other materials provided with the
|
|
// distribution.
|
|
// * Neither the name of Google Inc. nor the names of its
|
|
// contributors may be used to endorse or promote products derived from
|
|
// this software without specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
#include "run_benchmark.h"
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/time.h>
|
|
|
|
struct internal_bench {
|
|
bench_body body;
|
|
uintptr_t param;
|
|
};
|
|
|
|
static void run_body(struct internal_bench *b, long iterations)
|
|
{
|
|
b->body(iterations, b->param);
|
|
}
|
|
|
|
static double measure_once(struct internal_bench *b, long iterations)
|
|
{
|
|
struct timeval tv_before, tv_after;
|
|
int rv;
|
|
double time;
|
|
|
|
rv = gettimeofday(&tv_before, NULL);
|
|
if (rv) {
|
|
perror("gettimeofday");
|
|
abort();
|
|
}
|
|
|
|
run_body(b, iterations);
|
|
|
|
rv = gettimeofday(&tv_after, NULL);
|
|
if (rv) {
|
|
perror("gettimeofday");
|
|
abort();
|
|
}
|
|
tv_after.tv_sec -= tv_before.tv_sec;
|
|
time = tv_after.tv_sec * 1E6 + tv_after.tv_usec;
|
|
time -= tv_before.tv_usec;
|
|
time *= 1000;
|
|
return time;
|
|
}
|
|
|
|
#define TRIAL_NSEC 0.3E9
|
|
#define TARGET_NSEC 3E9
|
|
|
|
static double run_benchmark(struct internal_bench *b)
|
|
{
|
|
long iterations = 128;
|
|
double nsec;
|
|
while (1) {
|
|
nsec = measure_once(b, iterations);
|
|
if (nsec > TRIAL_NSEC) {
|
|
break;
|
|
}
|
|
iterations <<= 1;
|
|
}
|
|
while (nsec < TARGET_NSEC) {
|
|
iterations = (long)(iterations * TARGET_NSEC * 1.1 / nsec);
|
|
nsec = measure_once(b, iterations);
|
|
}
|
|
return nsec / iterations;
|
|
}
|
|
|
|
void report_benchmark(const char *name, bench_body body, uintptr_t param)
|
|
{
|
|
int i;
|
|
struct internal_bench b = {.body = body, .param = param};
|
|
for (i = 0; i < 3; i++) {
|
|
double nsec = run_benchmark(&b);
|
|
int slen;
|
|
int padding_size;
|
|
|
|
slen = printf("Benchmark: %s", name);
|
|
if (param && name[strlen(name)-1] != ')') {
|
|
slen += printf("(%lld)", (long long)param);
|
|
}
|
|
padding_size = 60 - slen;
|
|
if (padding_size < 1) {
|
|
padding_size = 1;
|
|
}
|
|
printf("%*c%f nsec\n", padding_size, ' ', nsec);
|
|
fflush(stdout);
|
|
}
|
|
}
|