isa-l/crc/crc64_funcs_perf.c

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <inttypes.h>

#include "crc64.h"
#include "test.h"

#ifndef GT_L3_CACHE
#define GT_L3_CACHE 32 * 1024 * 1024 /* some number > last level cache */
#endif

#if !defined(COLD_TEST) && !defined(TEST_CUSTOM)
// Cached test, loop many times over small dataset
#define TEST_LEN      8 * 1024
#define TEST_TYPE_STR "_warm"
#elif defined(COLD_TEST)
// Uncached test.  Pull from large mem base.
#define TEST_LEN      (2 * GT_L3_CACHE)
#define TEST_TYPE_STR "_cold"
#endif

#ifndef TEST_SEED
#define TEST_SEED 0x1234
#endif

#define TEST_MEM TEST_LEN

typedef uint64_t (*crc64_func_t)(uint64_t, const uint8_t *, uint64_t);

typedef struct func_case {
        char *note;
        crc64_func_t crc64_func_call;
        crc64_func_t crc64_ref_call;
} func_case_t;

func_case_t test_funcs[] = {
        { "crc64_ecma_norm", crc64_ecma_norm, crc64_ecma_norm_base },
        { "crc64_ecma_refl", crc64_ecma_refl, crc64_ecma_refl_base },
        { "crc64_iso_norm", crc64_iso_norm, crc64_iso_norm_base },
        { "crc64_iso_refl", crc64_iso_refl, crc64_iso_refl_base },
        { "crc64_jones_norm", crc64_jones_norm, crc64_jones_norm_base },
        { "crc64_jones_refl", crc64_jones_refl, crc64_jones_refl_base },
        { "crc64_rocksoft_norm", crc64_rocksoft_norm, crc64_rocksoft_norm_base },
        { "crc64_rocksoft_refl", crc64_rocksoft_refl, crc64_rocksoft_refl_base }
};

int
main(int argc, char *argv[])
{
        int j;
        void *buf;
        uint64_t crc;
        struct perf start;
        func_case_t *test_func;

        if (posix_memalign(&buf, 1024, TEST_LEN)) {
                printf("alloc error: Fail");
                return -1;
        }
        memset(buf, (char) TEST_SEED, TEST_LEN);

        for (j = 0; j < sizeof(test_funcs) / sizeof(test_funcs[0]); j++) {
                test_func = &test_funcs[j];
                printf("%s_perf:\n", test_func->note);

                printf("Start timed tests\n");
                fflush(0);

                BENCHMARK(&start, BENCHMARK_TIME,
                          crc = test_func->crc64_func_call(TEST_SEED, buf, TEST_LEN));
                printf("%s" TEST_TYPE_STR ": ", test_func->note);
                perf_print(start, (long long) TEST_LEN);

                printf("finish 0x%" PRIx64 "\n", crc);
        }

        return 0;
}