diff options
Diffstat (limited to 'third_party/git/t/helper/test-hash-speed.c')
-rw-r--r-- | third_party/git/t/helper/test-hash-speed.c | 61 |
1 files changed, 0 insertions, 61 deletions
diff --git a/third_party/git/t/helper/test-hash-speed.c b/third_party/git/t/helper/test-hash-speed.c deleted file mode 100644 index 432233c7f0e5..000000000000 --- a/third_party/git/t/helper/test-hash-speed.c +++ /dev/null @@ -1,61 +0,0 @@ -#include "test-tool.h" -#include "cache.h" - -#define NUM_SECONDS 3 - -static inline void compute_hash(const struct git_hash_algo *algo, git_hash_ctx *ctx, uint8_t *final, const void *p, size_t len) -{ - algo->init_fn(ctx); - algo->update_fn(ctx, p, len); - algo->final_fn(final, ctx); -} - -int cmd__hash_speed(int ac, const char **av) -{ - git_hash_ctx ctx; - unsigned char hash[GIT_MAX_RAWSZ]; - clock_t initial, start, end; - unsigned bufsizes[] = { 64, 256, 1024, 8192, 16384 }; - int i; - void *p; - const struct git_hash_algo *algo = NULL; - - if (ac == 2) { - for (i = 1; i < GIT_HASH_NALGOS; i++) { - if (!strcmp(av[1], hash_algos[i].name)) { - algo = &hash_algos[i]; - break; - } - } - } - if (!algo) - die("usage: test-tool hash-speed algo_name"); - - /* Use this as an offset to make overflow less likely. */ - initial = clock(); - - printf("algo: %s\n", algo->name); - - for (i = 0; i < ARRAY_SIZE(bufsizes); i++) { - unsigned long j, kb; - double kb_per_sec; - p = xcalloc(1, bufsizes[i]); - start = end = clock() - initial; - for (j = 0; ((end - start) / CLOCKS_PER_SEC) < NUM_SECONDS; j++) { - compute_hash(algo, &ctx, hash, p, bufsizes[i]); - - /* - * Only check elapsed time every 128 iterations to avoid - * dominating the runtime with system calls. - */ - if (!(j & 127)) - end = clock() - initial; - } - kb = j * bufsizes[i]; - kb_per_sec = kb / (1024 * ((double)end - start) / CLOCKS_PER_SEC); - printf("size %u: %lu iters; %lu KiB; %0.2f KiB/s\n", bufsizes[i], j, kb, kb_per_sec); - free(p); - } - - exit(0); -} |