app/test: move hash performance tests to separate file

[dpdk.git] / app / test / test_hash_functions.c

diff --git a/app/test/test_hash_functions.c b/app/test/test_hash_functions.c
new file mode 100644 (file)
index 0000000..4efb3cd
--- /dev/null
+++ b/app/test/test_hash_functions.c
@@ -0,0 +1,147 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
+ *   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 <stdint.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <errno.h>
+#include <sys/queue.h>
+
+#include <rte_cycles.h>
+#include <rte_random.h>
+#include <rte_hash.h>
+#include <rte_jhash.h>
+#include <rte_hash_crc.h>
+
+#include "test.h"
+
+/*******************************************************************************
+ * Hash function performance test configuration section. Each performance test
+ * will be performed HASHTEST_ITERATIONS times.
+ *
+ * The three arrays below control what tests are performed. Every combination
+ * from the array entries is tested.
+ */
+#define HASHTEST_ITERATIONS 1000000
+
+static rte_hash_function hashtest_funcs[] = {rte_jhash, rte_hash_crc};
+static uint32_t hashtest_initvals[] = {0};
+static uint32_t hashtest_key_lens[] = {2, 4, 5, 6, 7, 8, 10, 11, 15, 16, 21, 31, 32, 33, 63, 64};
+/******************************************************************************/
+
+/*
+ * To help print out name of hash functions.
+ */
+static const char *
+get_hash_name(rte_hash_function f)
+{
+       if (f == rte_jhash)
+               return "jhash";
+
+       if (f == rte_hash_crc)
+               return "rte_hash_crc";
+
+       return "UnknownHash";
+}
+
+/*
+ * Test a hash function.
+ */
+static void
+run_hash_func_perf_test(rte_hash_function f, uint32_t init_val,
+               uint32_t key_len)
+{
+       static uint8_t key[RTE_HASH_KEY_LENGTH_MAX];
+       uint64_t ticks = 0, start, end;
+       unsigned i, j;
+
+       for (i = 0; i < HASHTEST_ITERATIONS; i++) {
+
+               for (j = 0; j < key_len; j++)
+                       key[j] = (uint8_t) rte_rand();
+
+               start = rte_rdtsc();
+               f(key, key_len, init_val);
+               end = rte_rdtsc();
+               ticks += end - start;
+       }
+
+       printf("%-12s, %-18u, %-13u, %.02f\n", get_hash_name(f), (unsigned) key_len,
+                       (unsigned) init_val, (double)ticks / HASHTEST_ITERATIONS);
+}
+
+/*
+ * Test all hash functions.
+ */
+static void
+run_hash_func_perf_tests(void)
+{
+       unsigned i, j, k;
+
+       printf(" *** Hash function performance test results ***\n");
+       printf(" Number of iterations for each test = %d\n",
+                       HASHTEST_ITERATIONS);
+       printf("Hash Func.  , Key Length (bytes), Initial value, Ticks/Op.\n");
+
+       for (i = 0;
+            i < sizeof(hashtest_funcs) / sizeof(rte_hash_function);
+            i++) {
+               for (j = 0;
+                    j < sizeof(hashtest_initvals) / sizeof(uint32_t);
+                    j++) {
+                       for (k = 0;
+                            k < sizeof(hashtest_key_lens) / sizeof(uint32_t);
+                            k++) {
+                               run_hash_func_perf_test(hashtest_funcs[i],
+                                               hashtest_initvals[j],
+                                               hashtest_key_lens[k]);
+                       }
+               }
+       }
+}
+
+static int
+test_hash_functions(void)
+{
+       run_hash_func_perf_tests();
+
+       return 0;
+}
+
+static struct test_command hash_functions_cmd = {
+       .command = "hash_functions_autotest",
+       .callback = test_hash_functions,
+};
+REGISTER_TEST_COMMAND(hash_functions_cmd);