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20#include <subcmd/parse-options.h>
21#include "builtin.h"
22#include "bench/bench.h"
23
24#include <stdio.h>
25#include <stdlib.h>
26#include <string.h>
27#include <sys/prctl.h>
28#include <linux/zalloc.h>
29
30typedef int (*bench_fn_t)(int argc, const char **argv);
31
32struct bench {
33 const char *name;
34 const char *summary;
35 bench_fn_t fn;
36};
37
38#ifdef HAVE_LIBNUMA_SUPPORT
39static struct bench numa_benchmarks[] = {
40 { "mem", "Benchmark for NUMA workloads", bench_numa },
41 { "all", "Run all NUMA benchmarks", NULL },
42 { NULL, NULL, NULL }
43};
44#endif
45
46static struct bench sched_benchmarks[] = {
47 { "messaging", "Benchmark for scheduling and IPC", bench_sched_messaging },
48 { "pipe", "Benchmark for pipe() between two processes", bench_sched_pipe },
49 { "all", "Run all scheduler benchmarks", NULL },
50 { NULL, NULL, NULL }
51};
52
53static struct bench syscall_benchmarks[] = {
54 { "basic", "Benchmark for basic getppid(2) calls", bench_syscall_basic },
55 { "all", "Run all syscall benchmarks", NULL },
56 { NULL, NULL, NULL },
57};
58
59static struct bench mem_benchmarks[] = {
60 { "memcpy", "Benchmark for memcpy() functions", bench_mem_memcpy },
61 { "memset", "Benchmark for memset() functions", bench_mem_memset },
62 { "find_bit", "Benchmark for find_bit() functions", bench_mem_find_bit },
63 { "all", "Run all memory access benchmarks", NULL },
64 { NULL, NULL, NULL }
65};
66
67static struct bench futex_benchmarks[] = {
68 { "hash", "Benchmark for futex hash table", bench_futex_hash },
69 { "wake", "Benchmark for futex wake calls", bench_futex_wake },
70 { "wake-parallel", "Benchmark for parallel futex wake calls", bench_futex_wake_parallel },
71 { "requeue", "Benchmark for futex requeue calls", bench_futex_requeue },
72
73 { "lock-pi", "Benchmark for futex lock_pi calls", bench_futex_lock_pi },
74 { "all", "Run all futex benchmarks", NULL },
75 { NULL, NULL, NULL }
76};
77
78#ifdef HAVE_EVENTFD_SUPPORT
79static struct bench epoll_benchmarks[] = {
80 { "wait", "Benchmark epoll concurrent epoll_waits", bench_epoll_wait },
81 { "ctl", "Benchmark epoll concurrent epoll_ctls", bench_epoll_ctl },
82 { "all", "Run all futex benchmarks", NULL },
83 { NULL, NULL, NULL }
84};
85#endif
86
87static struct bench internals_benchmarks[] = {
88 { "synthesize", "Benchmark perf event synthesis", bench_synthesize },
89 { "kallsyms-parse", "Benchmark kallsyms parsing", bench_kallsyms_parse },
90 { "inject-build-id", "Benchmark build-id injection", bench_inject_build_id },
91 { "evlist-open-close", "Benchmark evlist open and close", bench_evlist_open_close },
92 { NULL, NULL, NULL }
93};
94
95struct collection {
96 const char *name;
97 const char *summary;
98 struct bench *benchmarks;
99};
100
101static struct collection collections[] = {
102 { "sched", "Scheduler and IPC benchmarks", sched_benchmarks },
103 { "syscall", "System call benchmarks", syscall_benchmarks },
104 { "mem", "Memory access benchmarks", mem_benchmarks },
105#ifdef HAVE_LIBNUMA_SUPPORT
106 { "numa", "NUMA scheduling and MM benchmarks", numa_benchmarks },
107#endif
108 {"futex", "Futex stressing benchmarks", futex_benchmarks },
109#ifdef HAVE_EVENTFD_SUPPORT
110 {"epoll", "Epoll stressing benchmarks", epoll_benchmarks },
111#endif
112 { "internals", "Perf-internals benchmarks", internals_benchmarks },
113 { "all", "All benchmarks", NULL },
114 { NULL, NULL, NULL }
115};
116
117
118#define for_each_collection(coll) \
119 for (coll = collections; coll->name; coll++)
120
121
122#define for_each_bench(coll, bench) \
123 for (bench = coll->benchmarks; bench && bench->name; bench++)
124
125static void dump_benchmarks(struct collection *coll)
126{
127 struct bench *bench;
128
129 printf("\n # List of available benchmarks for collection '%s':\n\n", coll->name);
130
131 for_each_bench(coll, bench)
132 printf("%14s: %s\n", bench->name, bench->summary);
133
134 printf("\n");
135}
136
137static const char *bench_format_str;
138
139
140int bench_format = BENCH_FORMAT_DEFAULT;
141unsigned int bench_repeat = 10;
142
143static const struct option bench_options[] = {
144 OPT_STRING('f', "format", &bench_format_str, "default|simple", "Specify the output formatting style"),
145 OPT_UINTEGER('r', "repeat", &bench_repeat, "Specify amount of times to repeat the run"),
146 OPT_END()
147};
148
149static const char * const bench_usage[] = {
150 "perf bench [<common options>] <collection> <benchmark> [<options>]",
151 NULL
152};
153
154static void print_usage(void)
155{
156 struct collection *coll;
157 int i;
158
159 printf("Usage: \n");
160 for (i = 0; bench_usage[i]; i++)
161 printf("\t%s\n", bench_usage[i]);
162 printf("\n");
163
164 printf(" # List of all available benchmark collections:\n\n");
165
166 for_each_collection(coll)
167 printf("%14s: %s\n", coll->name, coll->summary);
168 printf("\n");
169}
170
171static int bench_str2int(const char *str)
172{
173 if (!str)
174 return BENCH_FORMAT_DEFAULT;
175
176 if (!strcmp(str, BENCH_FORMAT_DEFAULT_STR))
177 return BENCH_FORMAT_DEFAULT;
178 else if (!strcmp(str, BENCH_FORMAT_SIMPLE_STR))
179 return BENCH_FORMAT_SIMPLE;
180
181 return BENCH_FORMAT_UNKNOWN;
182}
183
184
185
186
187
188static int run_bench(const char *coll_name, const char *bench_name, bench_fn_t fn,
189 int argc, const char **argv)
190{
191 int size;
192 char *name;
193 int ret;
194
195 size = strlen(coll_name) + 1 + strlen(bench_name) + 1;
196
197 name = zalloc(size);
198 BUG_ON(!name);
199
200 scnprintf(name, size, "%s-%s", coll_name, bench_name);
201
202 prctl(PR_SET_NAME, name);
203 argv[0] = name;
204
205 ret = fn(argc, argv);
206
207 free(name);
208
209 return ret;
210}
211
212static void run_collection(struct collection *coll)
213{
214 struct bench *bench;
215 const char *argv[2];
216
217 argv[1] = NULL;
218
219
220
221
222
223
224
225 for_each_bench(coll, bench) {
226 if (!bench->fn)
227 break;
228 printf("# Running %s/%s benchmark...\n", coll->name, bench->name);
229 fflush(stdout);
230
231 argv[1] = bench->name;
232 run_bench(coll->name, bench->name, bench->fn, 1, argv);
233 printf("\n");
234 }
235}
236
237static void run_all_collections(void)
238{
239 struct collection *coll;
240
241 for_each_collection(coll)
242 run_collection(coll);
243}
244
245int cmd_bench(int argc, const char **argv)
246{
247 struct collection *coll;
248 int ret = 0;
249
250 if (argc < 2) {
251
252 print_usage();
253 goto end;
254 }
255
256 argc = parse_options(argc, argv, bench_options, bench_usage,
257 PARSE_OPT_STOP_AT_NON_OPTION);
258
259 bench_format = bench_str2int(bench_format_str);
260 if (bench_format == BENCH_FORMAT_UNKNOWN) {
261 printf("Unknown format descriptor: '%s'\n", bench_format_str);
262 goto end;
263 }
264
265 if (bench_repeat == 0) {
266 printf("Invalid repeat option: Must specify a positive value\n");
267 goto end;
268 }
269
270 if (argc < 1) {
271 print_usage();
272 goto end;
273 }
274
275 if (!strcmp(argv[0], "all")) {
276 run_all_collections();
277 goto end;
278 }
279
280 for_each_collection(coll) {
281 struct bench *bench;
282
283 if (strcmp(coll->name, argv[0]))
284 continue;
285
286 if (argc < 2) {
287
288 dump_benchmarks(coll);
289 goto end;
290 }
291
292 if (!strcmp(argv[1], "all")) {
293 run_collection(coll);
294 goto end;
295 }
296
297 for_each_bench(coll, bench) {
298 if (strcmp(bench->name, argv[1]))
299 continue;
300
301 if (bench_format == BENCH_FORMAT_DEFAULT)
302 printf("# Running '%s/%s' benchmark:\n", coll->name, bench->name);
303 fflush(stdout);
304 ret = run_bench(coll->name, bench->name, bench->fn, argc-1, argv+1);
305 goto end;
306 }
307
308 if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help")) {
309 dump_benchmarks(coll);
310 goto end;
311 }
312
313 printf("Unknown benchmark: '%s' for collection '%s'\n", argv[1], argv[0]);
314 ret = 1;
315 goto end;
316 }
317
318 printf("Unknown collection: '%s'\n", argv[0]);
319 ret = 1;
320
321end:
322 return ret;
323}
324
