Root/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
29struct 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 suite (pseudo suite)", NULL }
37
38static struct bench_suite sched_suites[] = {
39    { "messaging",
40      "Benchmark for scheduler and IPC mechanisms",
41      bench_sched_messaging },
42    { "pipe",
43      "Flood of communication over pipe() between two processes",
44      bench_sched_pipe },
45    suite_all,
46    { NULL,
47      NULL,
48      NULL }
49};
50
51static struct bench_suite mem_suites[] = {
52    { "memcpy",
53      "Simple memory copy in various ways",
54      bench_mem_memcpy },
55    { "memset",
56      "Simple memory set in various ways",
57      bench_mem_memset },
58    suite_all,
59    { NULL,
60      NULL,
61      NULL }
62};
63
64struct bench_subsys {
65    const char *name;
66    const char *summary;
67    struct bench_suite *suites;
68};
69
70static struct bench_subsys subsystems[] = {
71    { "sched",
72      "scheduler and IPC mechanism",
73      sched_suites },
74    { "mem",
75      "memory access performance",
76      mem_suites },
77    { "all", /* sentinel: easy for help */
78      "test all subsystem (pseudo subsystem)",
79      NULL },
80    { NULL,
81      NULL,
82      NULL }
83};
84
85static void dump_suites(int subsys_index)
86{
87    int i;
88
89    printf("# List of available suites for %s...\n\n",
90           subsystems[subsys_index].name);
91
92    for (i = 0; subsystems[subsys_index].suites[i].name; i++)
93        printf("%14s: %s\n",
94               subsystems[subsys_index].suites[i].name,
95               subsystems[subsys_index].suites[i].summary);
96
97    printf("\n");
98    return;
99}
100
101static const char *bench_format_str;
102int bench_format = BENCH_FORMAT_DEFAULT;
103
104static const struct option bench_options[] = {
105    OPT_STRING('f', "format", &bench_format_str, "default",
106            "Specify format style"),
107    OPT_END()
108};
109
110static const char * const bench_usage[] = {
111    "perf bench [<common options>] <subsystem> <suite> [<options>]",
112    NULL
113};
114
115static void print_usage(void)
116{
117    int i;
118
119    printf("Usage: \n");
120    for (i = 0; bench_usage[i]; i++)
121        printf("\t%s\n", bench_usage[i]);
122    printf("\n");
123
124    printf("# List of available subsystems...\n\n");
125
126    for (i = 0; subsystems[i].name; i++)
127        printf("%14s: %s\n",
128               subsystems[i].name, subsystems[i].summary);
129    printf("\n");
130}
131
132static int bench_str2int(const char *str)
133{
134    if (!str)
135        return BENCH_FORMAT_DEFAULT;
136
137    if (!strcmp(str, BENCH_FORMAT_DEFAULT_STR))
138        return BENCH_FORMAT_DEFAULT;
139    else if (!strcmp(str, BENCH_FORMAT_SIMPLE_STR))
140        return BENCH_FORMAT_SIMPLE;
141
142    return BENCH_FORMAT_UNKNOWN;
143}
144
145static void all_suite(struct bench_subsys *subsys) /* FROM HERE */
146{
147    int i;
148    const char *argv[2];
149    struct bench_suite *suites = subsys->suites;
150
151    argv[1] = NULL;
152    /*
153     * TODO:
154     * preparing preset parameters for
155     * embedded, ordinary PC, HPC, etc...
156     * will be helpful
157     */
158    for (i = 0; suites[i].fn; i++) {
159        printf("# Running %s/%s benchmark...\n",
160               subsys->name,
161               suites[i].name);
162
163        argv[1] = suites[i].name;
164        suites[i].fn(1, argv, NULL);
165        printf("\n");
166    }
167}
168
169static void all_subsystem(void)
170{
171    int i;
172    for (i = 0; subsystems[i].suites; i++)
173        all_suite(&subsystems[i]);
174}
175
176int cmd_bench(int argc, const char **argv, const char *prefix __used)
177{
178    int i, j, status = 0;
179
180    if (argc < 2) {
181        /* No subsystem specified. */
182        print_usage();
183        goto end;
184    }
185
186    argc = parse_options(argc, argv, bench_options, bench_usage,
187                 PARSE_OPT_STOP_AT_NON_OPTION);
188
189    bench_format = bench_str2int(bench_format_str);
190    if (bench_format == BENCH_FORMAT_UNKNOWN) {
191        printf("Unknown format descriptor:%s\n", bench_format_str);
192        goto end;
193    }
194
195    if (argc < 1) {
196        print_usage();
197        goto end;
198    }
199
200    if (!strcmp(argv[0], "all")) {
201        all_subsystem();
202        goto end;
203    }
204
205    for (i = 0; subsystems[i].name; i++) {
206        if (strcmp(subsystems[i].name, argv[0]))
207            continue;
208
209        if (argc < 2) {
210            /* No suite specified. */
211            dump_suites(i);
212            goto end;
213        }
214
215        if (!strcmp(argv[1], "all")) {
216            all_suite(&subsystems[i]);
217            goto end;
218        }
219
220        for (j = 0; subsystems[i].suites[j].name; j++) {
221            if (strcmp(subsystems[i].suites[j].name, argv[1]))
222                continue;
223
224            if (bench_format == BENCH_FORMAT_DEFAULT)
225                printf("# Running %s/%s benchmark...\n",
226                       subsystems[i].name,
227                       subsystems[i].suites[j].name);
228            status = subsystems[i].suites[j].fn(argc - 1,
229                                argv + 1, prefix);
230            goto end;
231        }
232
233        if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help")) {
234            dump_suites(i);
235            goto end;
236        }
237
238        printf("Unknown suite:%s for %s\n", argv[1], argv[0]);
239        status = 1;
240        goto end;
241    }
242
243    printf("Unknown subsystem:%s\n", argv[0]);
244    status = 1;
245
246end:
247    return status;
248}
249

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