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