isa-l/erasure_code/gf_vect_mul_perf.c

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>		// for memset
#include "erasure_code.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_LOOPS   4000000
# define TEST_TYPE_STR "_warm"
#else
# ifndef TEST_CUSTOM
// Uncached test.  Pull from large mem base.
#  define TEST_SOURCES 10
#  define GT_L3_CACHE  32*1024*1024	/* some number > last level cache */
#  define TEST_LEN     GT_L3_CACHE / 2
#  define TEST_LOOPS   1000
#  define TEST_TYPE_STR "_cold"
# else
#  define TEST_TYPE_STR "_cus"
#  ifndef TEST_LOOPS
#    define TEST_LOOPS 1000
#  endif
# endif
#endif

#define TEST_MEM (2 * TEST_LEN)

typedef unsigned char u8;

int main(int argc, char *argv[])
{
	int i;
	u8 *buff1, *buff2, gf_const_tbl[64], a = 2;
	struct perf start, stop;

	printf("gf_vect_mul_perf:\n");

	gf_vect_mul_init(a, gf_const_tbl);

	// Allocate large mem region
	buff1 = (u8 *) malloc(TEST_LEN);
	buff2 = (u8 *) malloc(TEST_LEN);
	if (NULL == buff1 || NULL == buff2) {
		printf("Failed to allocate %dB\n", TEST_LEN);
		return 1;
	}

	memset(buff1, 0, TEST_LEN);
	memset(buff2, 0, TEST_LEN);

	gf_vect_mul(TEST_LEN, gf_const_tbl, buff1, buff2);

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

	gf_vect_mul(TEST_LEN, gf_const_tbl, buff1, buff2);
	perf_start(&start);
	for (i = 0; i < TEST_LOOPS; i++) {
		gf_vect_mul_init(a, gf_const_tbl);
		gf_vect_mul(TEST_LEN, gf_const_tbl, buff1, buff2);
	}
	perf_stop(&stop);
	printf("gf_vect_mul" TEST_TYPE_STR ": ");
	perf_print(stop, start, (long long)TEST_LEN * i);

	return 0;
}