ceph/src/seastar/dpdk/app/test/test_lpm6_perf.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2014 Intel Corporation
   3  */
   4
   5 #include <stdio.h>
   6 #include <stdint.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9
  10 #include <rte_cycles.h>
  11 #include <rte_random.h>
  12 #include <rte_memory.h>
  13 #include <rte_lpm6.h>
  14
  15 #include "test.h"
  16 #include "test_lpm6_data.h"
  17
  18 #define TEST_LPM_ASSERT(cond) do {                                            \
  19         if (!(cond)) {                                                        \
  20                 printf("Error at line %d: \n", __LINE__);                     \
  21                 return -1;                                                    \
  22         }                                                                     \
  23 } while(0)
  24
  25 #define ITERATIONS (1 << 10)
  26 #define BATCH_SIZE 100000
  27 #define NUMBER_TBL8S                                           (1 << 16)
  28
  29 static void
  30 print_route_distribution(const struct rules_tbl_entry *table, uint32_t n)
  31 {
  32         unsigned i, j;
  33
  34         printf("Route distribution per prefix width: \n");
  35         printf("DEPTH    QUANTITY (PERCENT)\n");
  36         printf("--------------------------- \n");
  37
  38         /* Count depths. */
  39         for(i = 1; i <= 128; i++) {
  40                 unsigned depth_counter = 0;
  41                 double percent_hits;
  42
  43                 for (j = 0; j < n; j++)
  44                         if (table[j].depth == (uint8_t) i)
  45                                 depth_counter++;
  46
  47                 percent_hits = ((double)depth_counter)/((double)n) * 100;
  48                 printf("%.2u%15u (%.2f)\n", i, depth_counter, percent_hits);
  49         }
  50         printf("\n");
  51 }
  52
  53 static int
  54 test_lpm6_perf(void)
  55 {
  56         struct rte_lpm6 *lpm = NULL;
  57         struct rte_lpm6_config config;
  58         uint64_t begin, total_time;
  59         unsigned i, j;
  60         uint32_t next_hop_add = 0xAA, next_hop_return = 0;
  61         int status = 0;
  62         int64_t count = 0;
  63
  64         config.max_rules = 1000000;
  65         config.number_tbl8s = NUMBER_TBL8S;
  66         config.flags = 0;
  67
  68         rte_srand(rte_rdtsc());
  69
  70         printf("No. routes = %u\n", (unsigned) NUM_ROUTE_ENTRIES);
  71
  72         print_route_distribution(large_route_table, (uint32_t) NUM_ROUTE_ENTRIES);
  73
  74         /* Only generate IPv6 address of each item in large IPS table,
  75          * here next_hop is not needed.
  76          */
  77         generate_large_ips_table(0);
  78
  79         lpm = rte_lpm6_create(__func__, SOCKET_ID_ANY, &config);
  80         TEST_LPM_ASSERT(lpm != NULL);
  81
  82         /* Measure add. */
  83         begin = rte_rdtsc();
  84
  85         for (i = 0; i < NUM_ROUTE_ENTRIES; i++) {
  86                 if (rte_lpm6_add(lpm, large_route_table[i].ip,
  87                                 large_route_table[i].depth, next_hop_add) == 0)
  88                         status++;
  89         }
  90         /* End Timer. */
  91         total_time = rte_rdtsc() - begin;
  92
  93         printf("Unique added entries = %d\n", status);
  94         printf("Average LPM Add: %g cycles\n",
  95                         (double)total_time / NUM_ROUTE_ENTRIES);
  96
  97         /* Measure single Lookup */
  98         total_time = 0;
  99         count = 0;
 100
 101         for (i = 0; i < ITERATIONS; i ++) {
 102                 begin = rte_rdtsc();
 103
 104                 for (j = 0; j < NUM_IPS_ENTRIES; j ++) {
 105                         if (rte_lpm6_lookup(lpm, large_ips_table[j].ip,
 106                                         &next_hop_return) != 0)
 107                                 count++;
 108                 }
 109
 110                 total_time += rte_rdtsc() - begin;
 111
 112         }
 113         printf("Average LPM Lookup: %.1f cycles (fails = %.1f%%)\n",
 114                         (double)total_time / ((double)ITERATIONS * BATCH_SIZE),
 115                         (count * 100.0) / (double)(ITERATIONS * BATCH_SIZE));
 116
 117         /* Measure bulk Lookup */
 118         total_time = 0;
 119         count = 0;
 120
 121         uint8_t ip_batch[NUM_IPS_ENTRIES][16];
 122         int32_t next_hops[NUM_IPS_ENTRIES];
 123
 124         for (i = 0; i < NUM_IPS_ENTRIES; i++)
 125                 memcpy(ip_batch[i], large_ips_table[i].ip, 16);
 126
 127         for (i = 0; i < ITERATIONS; i ++) {
 128
 129                 /* Lookup per batch */
 130                 begin = rte_rdtsc();
 131                 rte_lpm6_lookup_bulk_func(lpm, ip_batch, next_hops, NUM_IPS_ENTRIES);
 132                 total_time += rte_rdtsc() - begin;
 133
 134                 for (j = 0; j < NUM_IPS_ENTRIES; j++)
 135                         if (next_hops[j] < 0)
 136                                 count++;
 137         }
 138         printf("BULK LPM Lookup: %.1f cycles (fails = %.1f%%)\n",
 139                         (double)total_time / ((double)ITERATIONS * BATCH_SIZE),
 140                         (count * 100.0) / (double)(ITERATIONS * BATCH_SIZE));
 141
 142         /* Delete */
 143         status = 0;
 144         begin = rte_rdtsc();
 145
 146         for (i = 0; i < NUM_ROUTE_ENTRIES; i++) {
 147                 /* rte_lpm_delete(lpm, ip, depth) */
 148                 status += rte_lpm6_delete(lpm, large_route_table[i].ip,
 149                                 large_route_table[i].depth);
 150         }
 151
 152         total_time += rte_rdtsc() - begin;
 153
 154         printf("Average LPM Delete: %g cycles\n",
 155                         (double)total_time / NUM_ROUTE_ENTRIES);
 156
 157         rte_lpm6_delete_all(lpm);
 158         rte_lpm6_free(lpm);
 159
 160         return 0;
 161 }
 162
 163 REGISTER_TEST_COMMAND(lpm6_perf_autotest, test_lpm6_perf);