app/test/test_thash_perf.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2021 Intel Corporation
   3  */
   4
   5 #include <stdio.h>
   6 #include <stdint.h>
   7 #include <stdlib.h>
   8 #include <math.h>
   9
  10 #include <rte_cycles.h>
  11 #include <rte_malloc.h>
  12 #include <rte_random.h>
  13 #include <rte_thash.h>
  14
  15 #include "test.h"
  16
  17 #define ITERATIONS      (1 << 15)
  18 #define BATCH_SZ        (1 << 10)
  19
  20 #define IPV4_2_TUPLE_LEN        (8)
  21 #define IPV4_4_TUPLE_LEN        (12)
  22 #define IPV6_2_TUPLE_LEN        (32)
  23 #define IPV6_4_TUPLE_LEN        (36)
  24
  25
  26 static const uint8_t default_rss_key[] = {
  27         0x6d, 0x5a, 0x56, 0xda, 0x25, 0x5b, 0x0e, 0xc2,
  28         0x41, 0x67, 0x25, 0x3d, 0x43, 0xa3, 0x8f, 0xb0,
  29         0xd0, 0xca, 0x2b, 0xcb, 0xae, 0x7b, 0x30, 0xb4,
  30         0x77, 0xcb, 0x2d, 0xa3, 0x80, 0x30, 0xf2, 0x0c,
  31         0x6a, 0x42, 0xb7, 0x3b, 0xbe, 0xac, 0x01, 0xfa,
  32 };
  33
  34 enum test_rss_type {
  35         TEST_SOFTRSS,
  36         TEST_SOFTRSS_BE,
  37         TEST_RSS_GFNI
  38 };
  39
  40 static inline uint64_t
  41 run_rss_calc(uint32_t *tuples[BATCH_SZ], enum test_rss_type type, int len,
  42         const void *key)
  43 {
  44         int i, j;
  45         uint64_t start_tsc, end_tsc;
  46         volatile uint32_t hash = 0;
  47
  48         start_tsc = rte_rdtsc_precise();
  49         for (i = 0; i < ITERATIONS; i++) {
  50                 for (j = 0; j < BATCH_SZ; j++) {
  51                         if (type == TEST_SOFTRSS)
  52                                 hash ^= rte_softrss(tuples[j], len /
  53                                         sizeof(uint32_t), (const uint8_t *)key);
  54                         else if (type == TEST_SOFTRSS_BE)
  55                                 hash ^= rte_softrss_be(tuples[j], len /
  56                                         sizeof(uint32_t), (const uint8_t *)key);
  57                         else
  58                                 hash ^= rte_thash_gfni((const uint64_t *)key,
  59                                         (uint8_t *)tuples[j], len);
  60                 }
  61         }
  62         end_tsc = rte_rdtsc_precise();
  63
  64         /* To avoid compiler warnings set hash to used. */
  65         RTE_SET_USED(hash);
  66
  67         return end_tsc - start_tsc;
  68 }
  69
  70 static inline uint64_t
  71 run_rss_calc_bulk(uint32_t *tuples[BATCH_SZ], int len, const void *key)
  72 {
  73         int i;
  74         uint64_t start_tsc, end_tsc;
  75         uint32_t bulk_hash[BATCH_SZ] = { 0 };
  76
  77         start_tsc = rte_rdtsc_precise();
  78         for (i = 0; i < ITERATIONS; i++)
  79                 rte_thash_gfni_bulk((const uint64_t *)key, len,
  80                         (uint8_t **)tuples, bulk_hash, BATCH_SZ);
  81
  82         end_tsc = rte_rdtsc_precise();
  83
  84         return end_tsc - start_tsc;
  85 }
  86
  87 static void
  88 run_thash_test(unsigned int tuple_len)
  89 {
  90         uint32_t *tuples[BATCH_SZ];
  91         unsigned int i, j;
  92         uint32_t len = RTE_ALIGN_CEIL(tuple_len, sizeof(uint32_t));
  93         uint64_t tsc_diff;
  94
  95         for (i = 0; i < BATCH_SZ; i++) {
  96                 tuples[i] = rte_zmalloc(NULL, len, 0);
  97                 for (j = 0; j < len / sizeof(uint32_t); j++)
  98                         tuples[i][j] = rte_rand();
  99         }
 100
 101         tsc_diff = run_rss_calc(tuples, TEST_SOFTRSS, len, default_rss_key);
 102         printf("Average rte_softrss() takes \t\t%.1f cycles for key len %d\n",
 103                 (double)(tsc_diff) / (double)(ITERATIONS * BATCH_SZ), len);
 104
 105         tsc_diff = run_rss_calc(tuples, TEST_SOFTRSS_BE, len,
 106                 default_rss_key);
 107         printf("Average rte_softrss_be() takes \t\t%.1f cycles for key len %d\n",
 108                 (double)(tsc_diff) / (double)(ITERATIONS * BATCH_SZ), len);
 109
 110         if (!rte_thash_gfni_supported())
 111                 return;
 112
 113         uint64_t rss_key_matrixes[RTE_DIM(default_rss_key)];
 114
 115         rte_thash_complete_matrix(rss_key_matrixes, default_rss_key,
 116                 RTE_DIM(default_rss_key));
 117
 118         tsc_diff = run_rss_calc(tuples, TEST_RSS_GFNI, len, rss_key_matrixes);
 119         printf("Average rte_thash_gfni takes \t\t%.1f cycles for key len %d\n",
 120                 (double)(tsc_diff) / (double)(ITERATIONS * BATCH_SZ), len);
 121
 122         tsc_diff = run_rss_calc_bulk(tuples, len, rss_key_matrixes);
 123         printf("Average rte_thash_gfni_bulk takes \t%.1f cycles for key len %d\n",
 124                 (double)(tsc_diff) / (double)(ITERATIONS * BATCH_SZ), len);
 125 }
 126
 127 static int
 128 test_thash_perf(void)
 129 {
 130         run_thash_test(IPV4_2_TUPLE_LEN);
 131         run_thash_test(IPV4_4_TUPLE_LEN);
 132         run_thash_test(IPV6_2_TUPLE_LEN);
 133         run_thash_test(IPV6_4_TUPLE_LEN);
 134
 135         return 0;
 136 }
 137
 138 REGISTER_TEST_COMMAND(thash_perf_autotest, test_thash_perf);