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added sized free benchmarks to malloc_bench

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This commit is contained in:
Aliaksey Kandratsenka 2016-03-12 14:12:02 -08:00
parent 71ffc1cd6b
commit b762b1a492
1 changed files with 41 additions and 2 deletions
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43
benchmark/malloc_bench.cc
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@ -68,7 +68,7 @@ static void bench_fastpath_dependent(long iterations,
static void bench_fastpath_simple(long iterations,
uintptr_t param)
{
size_t sz = 64;
size_t sz = static_cast<size_t>(param);
for (; iterations>0; iterations--) {
void *p = malloc(sz);
if (!p) {
@ -82,6 +82,35 @@ static void bench_fastpath_simple(long iterations,
}
}
#ifdef __GNUC__
#define HAVE_SIZED_FREE_OPTION
extern "C" void tc_free_sized(void *ptr, size_t size) __attribute__((weak));
static bool is_sized_free_available(void)
{
return tc_free_sized != NULL;
}
static void bench_fastpath_simple_sized(long iterations,
uintptr_t param)
{
size_t sz = static_cast<size_t>(param);
for (; iterations>0; iterations--) {
void *p = malloc(sz);
if (!p) {
abort();
}
tc_free_sized(p, sz);
// next iteration will use same free list as this iteration. So it
// should be prevent next iterations malloc to go too far before
// free done. But using same size will make free "too fast" since
// we'll hit size class cache.
}
}
#endif // __GNUC__
#define STACKSZ (1 << 16)
static void bench_fastpath_stack(long iterations,
@ -213,7 +242,17 @@ int main(void)
report_benchmark("bench_fastpath_throughput", bench_fastpath_throughput, 0);
report_benchmark("bench_fastpath_dependent", bench_fastpath_dependent, 0);
report_benchmark("bench_fastpath_simple", bench_fastpath_simple, 0);
report_benchmark("bench_fastpath_simple", bench_fastpath_simple, 64);
report_benchmark("bench_fastpath_simple", bench_fastpath_simple, 2048);
report_benchmark("bench_fastpath_simple", bench_fastpath_simple, 16384);
#ifdef HAVE_SIZED_FREE_OPTION
if (is_sized_free_available()) {
report_benchmark("bench_fastpath_simple_sized", bench_fastpath_simple_sized, 64);
report_benchmark("bench_fastpath_simple_sized", bench_fastpath_simple_sized, 2048);
}
#endif
for (int i = 8; i <= 512; i <<= 1) {
report_benchmark("bench_fastpath_stack", bench_fastpath_stack, i);
}