ceph/src/isa-l/crc/crc32_ieee_perf.c

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  29
  30 #include <stdio.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <stdint.h>
  34 #include <sys/time.h>
  35 #include "crc.h"
  36 #include "test.h"
  37
  38 //#define CACHED_TEST
  39 #ifdef CACHED_TEST
  40 // Cached test, loop many times over small dataset
  41 # define TEST_LEN     8*1024
  42 # define TEST_LOOPS   400000
  43 # define TEST_TYPE_STR "_warm"
  44 #else
  45 // Uncached test.  Pull from large mem base.
  46 #  define GT_L3_CACHE  32*1024*1024     /* some number > last level cache */
  47 #  define TEST_LEN     (2 * GT_L3_CACHE)
  48 #  define TEST_LOOPS   100
  49 #  define TEST_TYPE_STR "_cold"
  50 #endif
  51
  52 #ifndef TEST_SEED
  53 # define TEST_SEED 0x1234
  54 #endif
  55
  56 #define TEST_MEM TEST_LEN
  57
  58 int main(int argc, char *argv[])
  59 {
  60         int i;
  61         void *buf;
  62         uint32_t crc;
  63         struct perf start, stop;
  64
  65         printf("crc32_ieee_perf:\n");
  66
  67         if (posix_memalign(&buf, 1024, TEST_LEN)) {
  68                 printf("alloc error: Fail");
  69                 return -1;
  70         }
  71
  72         printf("Start timed tests\n");
  73         fflush(0);
  74
  75         memset(buf, 0, TEST_LEN);
  76         crc = crc32_ieee(TEST_SEED, buf, TEST_LEN);
  77         perf_start(&start);
  78         for (i = 0; i < TEST_LOOPS; i++) {
  79                 crc = crc32_ieee(TEST_SEED, buf, TEST_LEN);
  80         }
  81         perf_stop(&stop);
  82         printf("crc32_ieee" TEST_TYPE_STR ": ");
  83         perf_print(stop, start, (long long)TEST_LEN * i);
  84
  85         printf("finish 0x%x\n", crc);
  86         return 0;
  87 }