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Track per size class internal fragmentation

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This commit is contained in:
Yinan Zhang
2020-12-18 17:14:59 -08:00
parent afa489c3c5
commit 40fa4d29d3
15 changed files with 203 additions and 6 deletions
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1
test/unit/mallctl.c
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@@ -317,6 +317,7 @@ TEST_BEGIN(test_mallctl_opt) {
TEST_MALLCTL_OPT(bool, prof_final, prof);
TEST_MALLCTL_OPT(bool, prof_leak, prof);
TEST_MALLCTL_OPT(ssize_t, prof_recent_alloc_max, prof);
TEST_MALLCTL_OPT(bool, prof_stats, prof);
TEST_MALLCTL_OPT(bool, prof_sys_thread_name, prof);
#undef TEST_MALLCTL_OPT

80
test/unit/prof_stats.c Normal file
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@@ -0,0 +1,80 @@
#include "test/jemalloc_test.h"
#include "jemalloc/internal/prof_stats.h"
static void
test_wrapper(szind_t ind) {
#define N_PTRS 3
assert(opt_prof && opt_prof_stats);
tsd_t *tsd = tsd_fetch();
prof_stats_t live_stats_orig;
prof_stats_get_live(tsd, ind, &live_stats_orig);
prof_stats_t accum_stats_orig;
prof_stats_get_accum(tsd, ind, &accum_stats_orig);
void *ptrs[N_PTRS];
uint64_t live_req_sum = 0;
uint64_t live_count = 0;
uint64_t accum_req_sum = 0;
uint64_t accum_count = 0;
for (size_t i = 0, sz = sz_index2size(ind) - N_PTRS; i < N_PTRS;
++i, ++sz) {
void *p = malloc(sz);
assert_ptr_not_null(p, "malloc() failed");
ptrs[i] = p;
live_req_sum += sz;
live_count++;
accum_req_sum += sz;
accum_count++;
prof_stats_t live_stats;
prof_stats_get_live(tsd, ind, &live_stats);
expect_u64_eq(live_stats.req_sum - live_stats_orig.req_sum,
live_req_sum, "");
expect_u64_eq(live_stats.count - live_stats_orig.count,
live_count, "");
prof_stats_t accum_stats;
prof_stats_get_accum(tsd, ind, &accum_stats);
expect_u64_eq(accum_stats.req_sum - accum_stats_orig.req_sum,
accum_req_sum, "");
expect_u64_eq(accum_stats.count - accum_stats_orig.count,
accum_count, "");
}
for (size_t i = 0, sz = sz_index2size(ind) - N_PTRS; i < N_PTRS;
++i, ++sz) {
free(ptrs[i]);
live_req_sum -= sz;
live_count--;
prof_stats_t live_stats;
prof_stats_get_live(tsd, ind, &live_stats);
expect_u64_eq(live_stats.req_sum - live_stats_orig.req_sum,
live_req_sum, "");
expect_u64_eq(live_stats.count - live_stats_orig.count,
live_count, "");
prof_stats_t accum_stats;
prof_stats_get_accum(tsd, ind, &accum_stats);
expect_u64_eq(accum_stats.req_sum - accum_stats_orig.req_sum,
accum_req_sum, "");
expect_u64_eq(accum_stats.count - accum_stats_orig.count,
accum_count, "");
}
#undef N_PTRS
}
TEST_BEGIN(test_prof_stats) {
test_skip_if(!config_prof);
test_wrapper(0);
test_wrapper(1);
test_wrapper(2);
}
TEST_END
int
main(void) {
return test(
test_prof_stats);
}

5
test/unit/prof_stats.sh Normal file
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@@ -0,0 +1,5 @@
#!/bin/sh
if [ "x${enable_prof}" = "x1" ] ; then
export MALLOC_CONF="prof:true,lg_prof_sample:0,prof_stats:true"
fi