tools/perf/builtin-bench.c

   1 /*
   2  *
   3  * builtin-bench.c
   4  *
   5  * General benchmarking subsystem provided by perf
   6  *
   7  * Copyright (C) 2009, Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
   8  *
   9  */
  10
  11 /*
  12  *
  13  * Available subsystem list:
  14  *  sched ... scheduler and IPC mechanism
  15  *  mem   ... memory access performance
  16  *
  17  */
  18
  19 #include "perf.h"
  20 #include "util/util.h"
  21 #include "util/parse-options.h"
  22 #include "builtin.h"
  23 #include "bench/bench.h"
  24
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28
  29 struct bench_suite {
  30         const char *name;
  31         const char *summary;
  32         int (*fn)(int, const char **, const char *);
  33 };
  34                                                 \
  35 /* sentinel: easy for help */
  36 #define suite_all { "all", "Test all benchmark suites", NULL }
  37
  38 #ifdef LIBNUMA_SUPPORT
  39 static struct bench_suite numa_suites[] = {
  40         { "mem",
  41           "Benchmark for NUMA workloads",
  42           bench_numa },
  43         suite_all,
  44         { NULL,
  45           NULL,
  46           NULL                  }
  47 };
  48 #endif
  49
  50 static struct bench_suite sched_suites[] = {
  51         { "messaging",
  52           "Benchmark for scheduler and IPC mechanisms",
  53           bench_sched_messaging },
  54         { "pipe",
  55           "Flood of communication over pipe() between two processes",
  56           bench_sched_pipe      },
  57         suite_all,
  58         { NULL,
  59           NULL,
  60           NULL                  }
  61 };
  62
  63 static struct bench_suite mem_suites[] = {
  64         { "memcpy",
  65           "Simple memory copy in various ways",
  66           bench_mem_memcpy },
  67         { "memset",
  68           "Simple memory set in various ways",
  69           bench_mem_memset },
  70         suite_all,
  71         { NULL,
  72           NULL,
  73           NULL             }
  74 };
  75
  76 struct bench_subsys {
  77         const char *name;
  78         const char *summary;
  79         struct bench_suite *suites;
  80 };
  81
  82 static struct bench_subsys subsystems[] = {
  83 #ifdef LIBNUMA_SUPPORT
  84         { "numa",
  85           "NUMA scheduling and MM behavior",
  86           numa_suites },
  87 #endif
  88         { "sched",
  89           "scheduler and IPC mechanism",
  90           sched_suites },
  91         { "mem",
  92           "memory access performance",
  93           mem_suites },
  94         { "all",                /* sentinel: easy for help */
  95           "all benchmark subsystem",
  96           NULL },
  97         { NULL,
  98           NULL,
  99           NULL       }
 100 };
 101
 102 static void dump_suites(int subsys_index)
 103 {
 104         int i;
 105
 106         printf("# List of available suites for %s...\n\n",
 107                subsystems[subsys_index].name);
 108
 109         for (i = 0; subsystems[subsys_index].suites[i].name; i++)
 110                 printf("%14s: %s\n",
 111                        subsystems[subsys_index].suites[i].name,
 112                        subsystems[subsys_index].suites[i].summary);
 113
 114         printf("\n");
 115         return;
 116 }
 117
 118 static const char *bench_format_str;
 119 int bench_format = BENCH_FORMAT_DEFAULT;
 120
 121 static const struct option bench_options[] = {
 122         OPT_STRING('f', "format", &bench_format_str, "default",
 123                     "Specify format style"),
 124         OPT_END()
 125 };
 126
 127 static const char * const bench_usage[] = {
 128         "perf bench [<common options>] <subsystem> <suite> [<options>]",
 129         NULL
 130 };
 131
 132 static void print_usage(void)
 133 {
 134         int i;
 135
 136         printf("Usage: \n");
 137         for (i = 0; bench_usage[i]; i++)
 138                 printf("\t%s\n", bench_usage[i]);
 139         printf("\n");
 140
 141         printf("# List of available subsystems...\n\n");
 142
 143         for (i = 0; subsystems[i].name; i++)
 144                 printf("%14s: %s\n",
 145                        subsystems[i].name, subsystems[i].summary);
 146         printf("\n");
 147 }
 148
 149 static int bench_str2int(const char *str)
 150 {
 151         if (!str)
 152                 return BENCH_FORMAT_DEFAULT;
 153
 154         if (!strcmp(str, BENCH_FORMAT_DEFAULT_STR))
 155                 return BENCH_FORMAT_DEFAULT;
 156         else if (!strcmp(str, BENCH_FORMAT_SIMPLE_STR))
 157                 return BENCH_FORMAT_SIMPLE;
 158
 159         return BENCH_FORMAT_UNKNOWN;
 160 }
 161
 162 static void all_suite(struct bench_subsys *subsys)        /* FROM HERE */
 163 {
 164         int i;
 165         const char *argv[2];
 166         struct bench_suite *suites = subsys->suites;
 167
 168         argv[1] = NULL;
 169         /*
 170          * TODO:
 171          * preparing preset parameters for
 172          * embedded, ordinary PC, HPC, etc...
 173          * will be helpful
 174          */
 175         for (i = 0; suites[i].fn; i++) {
 176                 printf("# Running %s/%s benchmark...\n",
 177                        subsys->name,
 178                        suites[i].name);
 179                 fflush(stdout);
 180
 181                 argv[1] = suites[i].name;
 182                 suites[i].fn(1, argv, NULL);
 183                 printf("\n");
 184         }
 185 }
 186
 187 static void all_subsystem(void)
 188 {
 189         int i;
 190         for (i = 0; subsystems[i].suites; i++)
 191                 all_suite(&subsystems[i]);
 192 }
 193
 194 int cmd_bench(int argc, const char **argv, const char *prefix __maybe_unused)
 195 {
 196         int i, j, status = 0;
 197
 198         if (argc < 2) {
 199                 /* No subsystem specified. */
 200                 print_usage();
 201                 goto end;
 202         }
 203
 204         argc = parse_options(argc, argv, bench_options, bench_usage,
 205                              PARSE_OPT_STOP_AT_NON_OPTION);
 206
 207         bench_format = bench_str2int(bench_format_str);
 208         if (bench_format == BENCH_FORMAT_UNKNOWN) {
 209                 printf("Unknown format descriptor:%s\n", bench_format_str);
 210                 goto end;
 211         }
 212
 213         if (argc < 1) {
 214                 print_usage();
 215                 goto end;
 216         }
 217
 218         if (!strcmp(argv[0], "all")) {
 219                 all_subsystem();
 220                 goto end;
 221         }
 222
 223         for (i = 0; subsystems[i].name; i++) {
 224                 if (strcmp(subsystems[i].name, argv[0]))
 225                         continue;
 226
 227                 if (argc < 2) {
 228                         /* No suite specified. */
 229                         dump_suites(i);
 230                         goto end;
 231                 }
 232
 233                 if (!strcmp(argv[1], "all")) {
 234                         all_suite(&subsystems[i]);
 235                         goto end;
 236                 }
 237
 238                 for (j = 0; subsystems[i].suites[j].name; j++) {
 239                         if (strcmp(subsystems[i].suites[j].name, argv[1]))
 240                                 continue;
 241
 242                         if (bench_format == BENCH_FORMAT_DEFAULT)
 243                                 printf("# Running %s/%s benchmark...\n",
 244                                        subsystems[i].name,
 245                                        subsystems[i].suites[j].name);
 246                         fflush(stdout);
 247                         status = subsystems[i].suites[j].fn(argc - 1,
 248                                                             argv + 1, prefix);
 249                         goto end;
 250                 }
 251
 252                 if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help")) {
 253                         dump_suites(i);
 254                         goto end;
 255                 }
 256
 257                 printf("Unknown suite:%s for %s\n", argv[1], argv[0]);
 258                 status = 1;
 259                 goto end;
 260         }
 261
 262         printf("Unknown subsystem:%s\n", argv[0]);
 263         status = 1;
 264
 265 end:
 266         return status;
 267 }