Messages in this thread Patch in this message | | | From | Tiezhu Yang <> | Subject | [PATCH v2 3/3] perf bench syscall: Add execve syscall benchmark | Date | Thu, 29 Sep 2022 16:52:51 +0800 |
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This commit adds the execve syscall benchmark, more syscall benchmarks can be added in the future.
Here are the test results:
[loongson@linux perf]$ ./perf bench syscall
# List of available benchmarks for collection 'syscall':
basic: Benchmark for basic getppid(2) calls close: Benchmark for close(2) calls execve: Benchmark for execve(2) calls all: Run all syscall benchmarks
[loongson@linux perf]$ ./perf bench syscall execve # Running 'syscall/execve' benchmark: # Executed 10000 execve() calls Total time: 4.827 [sec]
482.761800 usecs/op 2071 ops/sec [loongson@linux perf]$ ./perf bench syscall all # Running syscall/basic benchmark... # Executed 10000000 getppid() calls Total time: 1.956 [sec]
0.195692 usecs/op 5110065 ops/sec
# Running syscall/close benchmark... # Executed 10000000 close() calls Total time: 6.306 [sec]
0.630692 usecs/op 1585558 ops/sec
# Running syscall/execve benchmark... # Executed 10000 execve() calls Total time: 4.842 [sec]
484.299500 usecs/op 2064 ops/sec
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> --- tools/perf/bench/bench.h | 1 + tools/perf/bench/syscall.c | 36 ++++++++++++++++++++++++++++++++++++ tools/perf/builtin-bench.c | 1 + 3 files changed, 38 insertions(+)
diff --git a/tools/perf/bench/bench.h b/tools/perf/bench/bench.h index 916cd47..6ca3327 100644 --- a/tools/perf/bench/bench.h +++ b/tools/perf/bench/bench.h @@ -35,6 +35,7 @@ int bench_sched_messaging(int argc, const char **argv); int bench_sched_pipe(int argc, const char **argv); int bench_syscall_basic(int argc, const char **argv); int bench_syscall_close(int argc, const char **argv); +int bench_syscall_execve(int argc, const char **argv); int bench_mem_memcpy(int argc, const char **argv); int bench_mem_memset(int argc, const char **argv); int bench_mem_find_bit(int argc, const char **argv); diff --git a/tools/perf/bench/syscall.c b/tools/perf/bench/syscall.c index c15e7e2..b46caf6 100644 --- a/tools/perf/bench/syscall.c +++ b/tools/perf/bench/syscall.c @@ -14,6 +14,7 @@ #include <sys/time.h> #include <sys/syscall.h> #include <sys/types.h> +#include <sys/wait.h> #include <unistd.h> #include <stdlib.h> #include <asm/unistd.h> @@ -31,6 +32,27 @@ static const char * const bench_syscall_usage[] = { NULL }; +static void test_execve(void) +{ + const char *pathname = "/bin/true"; + char *const argv[] = { (char *)pathname, NULL }; + pid_t pid = fork(); + + if (pid < 0) { + fprintf(stderr, "fork failed\n"); + exit(1); + } else if (pid == 0) { + execve(pathname, argv, NULL); + fprintf(stderr, "execve /bin/true failed\n"); + exit(1); + } else { + if (waitpid(pid, NULL, 0) < 0) { + fprintf(stderr, "waitpid failed\n"); + exit(1); + } + } +} + static int bench_syscall_common(int argc, const char **argv, int syscall) { struct timeval start, stop, diff; @@ -50,6 +72,12 @@ static int bench_syscall_common(int argc, const char **argv, int syscall) case __NR_close: close(dup(0)); break; + case __NR_execve: + test_execve(); + /* Only loop 10000 times to save time */ + if (i == 10000) + loops = 10000; + break; default: break; } @@ -65,6 +93,9 @@ static int bench_syscall_common(int argc, const char **argv, int syscall) case __NR_close: name = "close()"; break; + case __NR_execve: + name = "execve()"; + break; default: break; } @@ -112,3 +143,8 @@ int bench_syscall_close(int argc, const char **argv) { return bench_syscall_common(argc, argv, __NR_close); } + +int bench_syscall_execve(int argc, const char **argv) +{ + return bench_syscall_common(argc, argv, __NR_execve); +} diff --git a/tools/perf/builtin-bench.c b/tools/perf/builtin-bench.c index b63c711..6f9ff75 100644 --- a/tools/perf/builtin-bench.c +++ b/tools/perf/builtin-bench.c @@ -53,6 +53,7 @@ static struct bench sched_benchmarks[] = { static struct bench syscall_benchmarks[] = { { "basic", "Benchmark for basic getppid(2) calls", bench_syscall_basic }, { "close", "Benchmark for close(2) calls", bench_syscall_close }, + { "execve", "Benchmark for execve(2) calls", bench_syscall_execve }, { "all", "Run all syscall benchmarks", NULL }, { NULL, NULL, NULL }, }; -- 2.1.0
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