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-rw-r--r--src/isa-l/crc/crc32_ieee_perf.c87
1 files changed, 87 insertions, 0 deletions
diff --git a/src/isa-l/crc/crc32_ieee_perf.c b/src/isa-l/crc/crc32_ieee_perf.c
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+/**********************************************************************
+ Copyright(c) 2011-2015 Intel Corporation All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+ * Neither the name of Intel Corporation nor the names of its
+ contributors may be used to endorse or promote products derived
+ from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+**********************************************************************/
+
+#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_LOOPS 400000
+# 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_LOOPS 100
+# 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[])
+{
+ int i;
+ void *buf;
+ uint32_t crc;
+ struct perf start, stop;
+
+ 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);
+ crc = crc32_ieee(TEST_SEED, buf, TEST_LEN);
+ perf_start(&start);
+ for (i = 0; i < TEST_LOOPS; i++) {
+ crc = crc32_ieee(TEST_SEED, buf, TEST_LEN);
+ }
+ perf_stop(&stop);
+ printf("crc32_ieee" TEST_TYPE_STR ": ");
+ perf_print(stop, start, (long long)TEST_LEN * i);
+
+ printf("finish 0x%x\n", crc);
+ return 0;
+}