Add a benchmark of large allocations.
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46471ea327
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@ -289,6 +289,7 @@ CPP_SRCS :=
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TESTS_INTEGRATION_CPP :=
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endif
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TESTS_STRESS := $(srcroot)test/stress/microbench.c \
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$(srcroot)test/stress/large_microbench.c \
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$(srcroot)test/stress/hookbench.c
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39
test/include/test/bench.h
Normal file
39
test/include/test/bench.h
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@ -0,0 +1,39 @@
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static inline void
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time_func(timedelta_t *timer, uint64_t nwarmup, uint64_t niter,
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void (*func)(void)) {
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uint64_t i;
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for (i = 0; i < nwarmup; i++) {
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func();
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}
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timer_start(timer);
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for (i = 0; i < niter; i++) {
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func();
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}
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timer_stop(timer);
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}
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static inline void
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compare_funcs(uint64_t nwarmup, uint64_t niter, const char *name_a,
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void (*func_a), const char *name_b, void (*func_b)) {
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timedelta_t timer_a, timer_b;
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char ratio_buf[6];
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void *p;
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p = mallocx(1, 0);
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if (p == NULL) {
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test_fail("Unexpected mallocx() failure");
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return;
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}
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time_func(&timer_a, nwarmup, niter, func_a);
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time_func(&timer_b, nwarmup, niter, func_b);
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timer_ratio(&timer_a, &timer_b, ratio_buf, sizeof(ratio_buf));
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malloc_printf("%"FMTu64" iterations, %s=%"FMTu64"us, "
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"%s=%"FMTu64"us, ratio=1:%s\n",
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niter, name_a, timer_usec(&timer_a), name_b, timer_usec(&timer_b),
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ratio_buf);
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dallocx(p, 0);
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}
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33
test/stress/large_microbench.c
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33
test/stress/large_microbench.c
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@ -0,0 +1,33 @@
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#include "test/jemalloc_test.h"
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#include "test/bench.h"
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static void
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large_mallocx_free(void) {
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/*
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* We go a bit larger than the large minclass on its own to better
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* expose costs from things like zeroing.
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*/
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void *p = mallocx(SC_LARGE_MINCLASS, MALLOCX_TCACHE_NONE);
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assert_ptr_not_null(p, "mallocx shouldn't fail");
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free(p);
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}
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static void
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small_mallocx_free(void) {
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void *p = mallocx(16, 0);
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assert_ptr_not_null(p, "mallocx shouldn't fail");
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free(p);
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}
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TEST_BEGIN(test_large_vs_small) {
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compare_funcs(100*1000, 1*1000*1000, "large mallocx",
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large_mallocx_free, "small mallocx", small_mallocx_free);
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}
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TEST_END
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int
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main(void) {
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return test_no_reentrancy(
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test_large_vs_small);
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}
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@ -1,44 +1,5 @@
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#include "test/jemalloc_test.h"
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static inline void
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time_func(timedelta_t *timer, uint64_t nwarmup, uint64_t niter,
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void (*func)(void)) {
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uint64_t i;
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for (i = 0; i < nwarmup; i++) {
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func();
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}
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timer_start(timer);
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for (i = 0; i < niter; i++) {
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func();
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}
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timer_stop(timer);
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}
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void
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compare_funcs(uint64_t nwarmup, uint64_t niter, const char *name_a,
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void (*func_a), const char *name_b, void (*func_b)) {
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timedelta_t timer_a, timer_b;
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char ratio_buf[6];
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void *p;
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p = mallocx(1, 0);
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if (p == NULL) {
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test_fail("Unexpected mallocx() failure");
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return;
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}
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time_func(&timer_a, nwarmup, niter, func_a);
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time_func(&timer_b, nwarmup, niter, func_b);
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timer_ratio(&timer_a, &timer_b, ratio_buf, sizeof(ratio_buf));
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malloc_printf("%"FMTu64" iterations, %s=%"FMTu64"us, "
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"%s=%"FMTu64"us, ratio=1:%s\n",
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niter, name_a, timer_usec(&timer_a), name_b, timer_usec(&timer_b),
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ratio_buf);
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dallocx(p, 0);
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}
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#include "test/bench.h"
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static void
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malloc_free(void) {
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