Import ceph 15.2.8

[ceph.git] / ceph / src / isa-l / crc / crc32_ieee_perf.c

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <sys/time.h>
#include "crc.h"
#include "test.h"

//#define CACHED_TEST
#ifdef CACHED_TEST
// Cached test, loop many times over small dataset
# define TEST_LEN     8*1024
# define TEST_TYPE_STR "_warm"
#else
// Uncached test.  Pull from large mem base.
#  define GT_L3_CACHE  32*1024*1024	/* some number > last level cache */
#  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

int main(int argc, char *argv[])
{
	void *buf;
	uint32_t crc;
	struct perf start;

	printf("crc32_ieee_perf:\n");

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

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

	memset(buf, 0, TEST_LEN);
	BENCHMARK(&start, BENCHMARK_TIME, crc = crc32_ieee(TEST_SEED, buf, TEST_LEN));
	printf("crc32_ieee" TEST_TYPE_STR ": ");
	perf_print(start, (long long)TEST_LEN);

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