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-rw-r--r--tools/perf/bench/bench.h18
-rw-r--r--tools/perf/bench/mem-memcpy-arch.h12
-rw-r--r--tools/perf/bench/mem-memcpy-x86-64-asm-def.h12
-rw-r--r--tools/perf/bench/mem-memcpy-x86-64-asm.S12
-rw-r--r--tools/perf/bench/mem-memcpy.c303
-rw-r--r--tools/perf/bench/mem-memset-arch.h12
-rw-r--r--tools/perf/bench/mem-memset-x86-64-asm-def.h12
-rw-r--r--tools/perf/bench/mem-memset-x86-64-asm.S13
-rw-r--r--tools/perf/bench/mem-memset.c297
-rw-r--r--tools/perf/bench/sched-messaging.c336
-rw-r--r--tools/perf/bench/sched-pipe.c127
11 files changed, 1154 insertions, 0 deletions
diff --git a/tools/perf/bench/bench.h b/tools/perf/bench/bench.h
new file mode 100644
index 00000000..a09bece6
--- /dev/null
+++ b/tools/perf/bench/bench.h
@@ -0,0 +1,18 @@
+#ifndef BENCH_H
+#define BENCH_H
+
+extern int bench_sched_messaging(int argc, const char **argv, const char *prefix);
+extern int bench_sched_pipe(int argc, const char **argv, const char *prefix);
+extern int bench_mem_memcpy(int argc, const char **argv, const char *prefix __used);
+extern int bench_mem_memset(int argc, const char **argv, const char *prefix);
+
+#define BENCH_FORMAT_DEFAULT_STR "default"
+#define BENCH_FORMAT_DEFAULT 0
+#define BENCH_FORMAT_SIMPLE_STR "simple"
+#define BENCH_FORMAT_SIMPLE 1
+
+#define BENCH_FORMAT_UNKNOWN -1
+
+extern int bench_format;
+
+#endif
diff --git a/tools/perf/bench/mem-memcpy-arch.h b/tools/perf/bench/mem-memcpy-arch.h
new file mode 100644
index 00000000..a72e36cb
--- /dev/null
+++ b/tools/perf/bench/mem-memcpy-arch.h
@@ -0,0 +1,12 @@
+
+#ifdef ARCH_X86_64
+
+#define MEMCPY_FN(fn, name, desc) \
+ extern void *fn(void *, const void *, size_t);
+
+#include "mem-memcpy-x86-64-asm-def.h"
+
+#undef MEMCPY_FN
+
+#endif
+
diff --git a/tools/perf/bench/mem-memcpy-x86-64-asm-def.h b/tools/perf/bench/mem-memcpy-x86-64-asm-def.h
new file mode 100644
index 00000000..d66ab799
--- /dev/null
+++ b/tools/perf/bench/mem-memcpy-x86-64-asm-def.h
@@ -0,0 +1,12 @@
+
+MEMCPY_FN(__memcpy,
+ "x86-64-unrolled",
+ "unrolled memcpy() in arch/x86/lib/memcpy_64.S")
+
+MEMCPY_FN(memcpy_c,
+ "x86-64-movsq",
+ "movsq-based memcpy() in arch/x86/lib/memcpy_64.S")
+
+MEMCPY_FN(memcpy_c_e,
+ "x86-64-movsb",
+ "movsb-based memcpy() in arch/x86/lib/memcpy_64.S")
diff --git a/tools/perf/bench/mem-memcpy-x86-64-asm.S b/tools/perf/bench/mem-memcpy-x86-64-asm.S
new file mode 100644
index 00000000..fcd9cf00
--- /dev/null
+++ b/tools/perf/bench/mem-memcpy-x86-64-asm.S
@@ -0,0 +1,12 @@
+#define memcpy MEMCPY /* don't hide glibc's memcpy() */
+#define altinstr_replacement text
+#define globl p2align 4; .globl
+#define Lmemcpy_c globl memcpy_c; memcpy_c
+#define Lmemcpy_c_e globl memcpy_c_e; memcpy_c_e
+#include "../../../arch/x86/lib/memcpy_64.S"
+/*
+ * We need to provide note.GNU-stack section, saying that we want
+ * NOT executable stack. Otherwise the final linking will assume that
+ * the ELF stack should not be restricted at all and set it RWX.
+ */
+.section .note.GNU-stack,"",@progbits
diff --git a/tools/perf/bench/mem-memcpy.c b/tools/perf/bench/mem-memcpy.c
new file mode 100644
index 00000000..71557225
--- /dev/null
+++ b/tools/perf/bench/mem-memcpy.c
@@ -0,0 +1,303 @@
+/*
+ * mem-memcpy.c
+ *
+ * memcpy: Simple memory copy in various ways
+ *
+ * Written by Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
+ */
+
+#include "../perf.h"
+#include "../util/util.h"
+#include "../util/parse-options.h"
+#include "../util/header.h"
+#include "bench.h"
+#include "mem-memcpy-arch.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/time.h>
+#include <errno.h>
+
+#define K 1024
+
+static const char *length_str = "1MB";
+static const char *routine = "default";
+static int iterations = 1;
+static bool use_clock;
+static int clock_fd;
+static bool only_prefault;
+static bool no_prefault;
+
+static const struct option options[] = {
+ OPT_STRING('l', "length", &length_str, "1MB",
+ "Specify length of memory to copy. "
+ "available unit: B, MB, GB (upper and lower)"),
+ OPT_STRING('r', "routine", &routine, "default",
+ "Specify routine to copy"),
+ OPT_INTEGER('i', "iterations", &iterations,
+ "repeat memcpy() invocation this number of times"),
+ OPT_BOOLEAN('c', "clock", &use_clock,
+ "Use CPU clock for measuring"),
+ OPT_BOOLEAN('o', "only-prefault", &only_prefault,
+ "Show only the result with page faults before memcpy()"),
+ OPT_BOOLEAN('n', "no-prefault", &no_prefault,
+ "Show only the result without page faults before memcpy()"),
+ OPT_END()
+};
+
+typedef void *(*memcpy_t)(void *, const void *, size_t);
+
+struct routine {
+ const char *name;
+ const char *desc;
+ memcpy_t fn;
+};
+
+struct routine routines[] = {
+ { "default",
+ "Default memcpy() provided by glibc",
+ memcpy },
+#ifdef ARCH_X86_64
+
+#define MEMCPY_FN(fn, name, desc) { name, desc, fn },
+#include "mem-memcpy-x86-64-asm-def.h"
+#undef MEMCPY_FN
+
+#endif
+
+ { NULL,
+ NULL,
+ NULL }
+};
+
+static const char * const bench_mem_memcpy_usage[] = {
+ "perf bench mem memcpy <options>",
+ NULL
+};
+
+static struct perf_event_attr clock_attr = {
+ .type = PERF_TYPE_HARDWARE,
+ .config = PERF_COUNT_HW_CPU_CYCLES
+};
+
+static void init_clock(void)
+{
+ clock_fd = sys_perf_event_open(&clock_attr, getpid(), -1, -1, 0);
+
+ if (clock_fd < 0 && errno == ENOSYS)
+ die("No CONFIG_PERF_EVENTS=y kernel support configured?\n");
+ else
+ BUG_ON(clock_fd < 0);
+}
+
+static u64 get_clock(void)
+{
+ int ret;
+ u64 clk;
+
+ ret = read(clock_fd, &clk, sizeof(u64));
+ BUG_ON(ret != sizeof(u64));
+
+ return clk;
+}
+
+static double timeval2double(struct timeval *ts)
+{
+ return (double)ts->tv_sec +
+ (double)ts->tv_usec / (double)1000000;
+}
+
+static void alloc_mem(void **dst, void **src, size_t length)
+{
+ *dst = zalloc(length);
+ if (!dst)
+ die("memory allocation failed - maybe length is too large?\n");
+
+ *src = zalloc(length);
+ if (!src)
+ die("memory allocation failed - maybe length is too large?\n");
+}
+
+static u64 do_memcpy_clock(memcpy_t fn, size_t len, bool prefault)
+{
+ u64 clock_start = 0ULL, clock_end = 0ULL;
+ void *src = NULL, *dst = NULL;
+ int i;
+
+ alloc_mem(&src, &dst, len);
+
+ if (prefault)
+ fn(dst, src, len);
+
+ clock_start = get_clock();
+ for (i = 0; i < iterations; ++i)
+ fn(dst, src, len);
+ clock_end = get_clock();
+
+ free(src);
+ free(dst);
+ return clock_end - clock_start;
+}
+
+static double do_memcpy_gettimeofday(memcpy_t fn, size_t len, bool prefault)
+{
+ struct timeval tv_start, tv_end, tv_diff;
+ void *src = NULL, *dst = NULL;
+ int i;
+
+ alloc_mem(&src, &dst, len);
+
+ if (prefault)
+ fn(dst, src, len);
+
+ BUG_ON(gettimeofday(&tv_start, NULL));
+ for (i = 0; i < iterations; ++i)
+ fn(dst, src, len);
+ BUG_ON(gettimeofday(&tv_end, NULL));
+
+ timersub(&tv_end, &tv_start, &tv_diff);
+
+ free(src);
+ free(dst);
+ return (double)((double)len / timeval2double(&tv_diff));
+}
+
+#define pf (no_prefault ? 0 : 1)
+
+#define print_bps(x) do { \
+ if (x < K) \
+ printf(" %14lf B/Sec", x); \
+ else if (x < K * K) \
+ printf(" %14lfd KB/Sec", x / K); \
+ else if (x < K * K * K) \
+ printf(" %14lf MB/Sec", x / K / K); \
+ else \
+ printf(" %14lf GB/Sec", x / K / K / K); \
+ } while (0)
+
+int bench_mem_memcpy(int argc, const char **argv,
+ const char *prefix __used)
+{
+ int i;
+ size_t len;
+ double result_bps[2];
+ u64 result_clock[2];
+
+ argc = parse_options(argc, argv, options,
+ bench_mem_memcpy_usage, 0);
+
+ if (use_clock)
+ init_clock();
+
+ len = (size_t)perf_atoll((char *)length_str);
+
+ result_clock[0] = result_clock[1] = 0ULL;
+ result_bps[0] = result_bps[1] = 0.0;
+
+ if ((s64)len <= 0) {
+ fprintf(stderr, "Invalid length:%s\n", length_str);
+ return 1;
+ }
+
+ /* same to without specifying either of prefault and no-prefault */
+ if (only_prefault && no_prefault)
+ only_prefault = no_prefault = false;
+
+ for (i = 0; routines[i].name; i++) {
+ if (!strcmp(routines[i].name, routine))
+ break;
+ }
+ if (!routines[i].name) {
+ printf("Unknown routine:%s\n", routine);
+ printf("Available routines...\n");
+ for (i = 0; routines[i].name; i++) {
+ printf("\t%s ... %s\n",
+ routines[i].name, routines[i].desc);
+ }
+ return 1;
+ }
+
+ if (bench_format == BENCH_FORMAT_DEFAULT)
+ printf("# Copying %s Bytes ...\n\n", length_str);
+
+ if (!only_prefault && !no_prefault) {
+ /* show both of results */
+ if (use_clock) {
+ result_clock[0] =
+ do_memcpy_clock(routines[i].fn, len, false);
+ result_clock[1] =
+ do_memcpy_clock(routines[i].fn, len, true);
+ } else {
+ result_bps[0] =
+ do_memcpy_gettimeofday(routines[i].fn,
+ len, false);
+ result_bps[1] =
+ do_memcpy_gettimeofday(routines[i].fn,
+ len, true);
+ }
+ } else {
+ if (use_clock) {
+ result_clock[pf] =
+ do_memcpy_clock(routines[i].fn,
+ len, only_prefault);
+ } else {
+ result_bps[pf] =
+ do_memcpy_gettimeofday(routines[i].fn,
+ len, only_prefault);
+ }
+ }
+
+ switch (bench_format) {
+ case BENCH_FORMAT_DEFAULT:
+ if (!only_prefault && !no_prefault) {
+ if (use_clock) {
+ printf(" %14lf Clock/Byte\n",
+ (double)result_clock[0]
+ / (double)len);
+ printf(" %14lf Clock/Byte (with prefault)\n",
+ (double)result_clock[1]
+ / (double)len);
+ } else {
+ print_bps(result_bps[0]);
+ printf("\n");
+ print_bps(result_bps[1]);
+ printf(" (with prefault)\n");
+ }
+ } else {
+ if (use_clock) {
+ printf(" %14lf Clock/Byte",
+ (double)result_clock[pf]
+ / (double)len);
+ } else
+ print_bps(result_bps[pf]);
+
+ printf("%s\n", only_prefault ? " (with prefault)" : "");
+ }
+ break;
+ case BENCH_FORMAT_SIMPLE:
+ if (!only_prefault && !no_prefault) {
+ if (use_clock) {
+ printf("%lf %lf\n",
+ (double)result_clock[0] / (double)len,
+ (double)result_clock[1] / (double)len);
+ } else {
+ printf("%lf %lf\n",
+ result_bps[0], result_bps[1]);
+ }
+ } else {
+ if (use_clock) {
+ printf("%lf\n", (double)result_clock[pf]
+ / (double)len);
+ } else
+ printf("%lf\n", result_bps[pf]);
+ }
+ break;
+ default:
+ /* reaching this means there's some disaster: */
+ die("unknown format: %d\n", bench_format);
+ break;
+ }
+
+ return 0;
+}
diff --git a/tools/perf/bench/mem-memset-arch.h b/tools/perf/bench/mem-memset-arch.h
new file mode 100644
index 00000000..a040fa77
--- /dev/null
+++ b/tools/perf/bench/mem-memset-arch.h
@@ -0,0 +1,12 @@
+
+#ifdef ARCH_X86_64
+
+#define MEMSET_FN(fn, name, desc) \
+ extern void *fn(void *, int, size_t);
+
+#include "mem-memset-x86-64-asm-def.h"
+
+#undef MEMSET_FN
+
+#endif
+
diff --git a/tools/perf/bench/mem-memset-x86-64-asm-def.h b/tools/perf/bench/mem-memset-x86-64-asm-def.h
new file mode 100644
index 00000000..a71dff97
--- /dev/null
+++ b/tools/perf/bench/mem-memset-x86-64-asm-def.h
@@ -0,0 +1,12 @@
+
+MEMSET_FN(__memset,
+ "x86-64-unrolled",
+ "unrolled memset() in arch/x86/lib/memset_64.S")
+
+MEMSET_FN(memset_c,
+ "x86-64-stosq",
+ "movsq-based memset() in arch/x86/lib/memset_64.S")
+
+MEMSET_FN(memset_c_e,
+ "x86-64-stosb",
+ "movsb-based memset() in arch/x86/lib/memset_64.S")
diff --git a/tools/perf/bench/mem-memset-x86-64-asm.S b/tools/perf/bench/mem-memset-x86-64-asm.S
new file mode 100644
index 00000000..9e5af89e
--- /dev/null
+++ b/tools/perf/bench/mem-memset-x86-64-asm.S
@@ -0,0 +1,13 @@
+#define memset MEMSET /* don't hide glibc's memset() */
+#define altinstr_replacement text
+#define globl p2align 4; .globl
+#define Lmemset_c globl memset_c; memset_c
+#define Lmemset_c_e globl memset_c_e; memset_c_e
+#include "../../../arch/x86/lib/memset_64.S"
+
+/*
+ * We need to provide note.GNU-stack section, saying that we want
+ * NOT executable stack. Otherwise the final linking will assume that
+ * the ELF stack should not be restricted at all and set it RWX.
+ */
+.section .note.GNU-stack,"",@progbits
diff --git a/tools/perf/bench/mem-memset.c b/tools/perf/bench/mem-memset.c
new file mode 100644
index 00000000..e9079185
--- /dev/null
+++ b/tools/perf/bench/mem-memset.c
@@ -0,0 +1,297 @@
+/*
+ * mem-memset.c
+ *
+ * memset: Simple memory set in various ways
+ *
+ * Trivial clone of mem-memcpy.c.
+ */
+
+#include "../perf.h"
+#include "../util/util.h"
+#include "../util/parse-options.h"
+#include "../util/header.h"
+#include "bench.h"
+#include "mem-memset-arch.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/time.h>
+#include <errno.h>
+
+#define K 1024
+
+static const char *length_str = "1MB";
+static const char *routine = "default";
+static int iterations = 1;
+static bool use_clock;
+static int clock_fd;
+static bool only_prefault;
+static bool no_prefault;
+
+static const struct option options[] = {
+ OPT_STRING('l', "length", &length_str, "1MB",
+ "Specify length of memory to copy. "
+ "available unit: B, MB, GB (upper and lower)"),
+ OPT_STRING('r', "routine", &routine, "default",
+ "Specify routine to copy"),
+ OPT_INTEGER('i', "iterations", &iterations,
+ "repeat memset() invocation this number of times"),
+ OPT_BOOLEAN('c', "clock", &use_clock,
+ "Use CPU clock for measuring"),
+ OPT_BOOLEAN('o', "only-prefault", &only_prefault,
+ "Show only the result with page faults before memset()"),
+ OPT_BOOLEAN('n', "no-prefault", &no_prefault,
+ "Show only the result without page faults before memset()"),
+ OPT_END()
+};
+
+typedef void *(*memset_t)(void *, int, size_t);
+
+struct routine {
+ const char *name;
+ const char *desc;
+ memset_t fn;
+};
+
+static const struct routine routines[] = {
+ { "default",
+ "Default memset() provided by glibc",
+ memset },
+#ifdef ARCH_X86_64
+
+#define MEMSET_FN(fn, name, desc) { name, desc, fn },
+#include "mem-memset-x86-64-asm-def.h"
+#undef MEMSET_FN
+
+#endif
+
+ { NULL,
+ NULL,
+ NULL }
+};
+
+static const char * const bench_mem_memset_usage[] = {
+ "perf bench mem memset <options>",
+ NULL
+};
+
+static struct perf_event_attr clock_attr = {
+ .type = PERF_TYPE_HARDWARE,
+ .config = PERF_COUNT_HW_CPU_CYCLES
+};
+
+static void init_clock(void)
+{
+ clock_fd = sys_perf_event_open(&clock_attr, getpid(), -1, -1, 0);
+
+ if (clock_fd < 0 && errno == ENOSYS)
+ die("No CONFIG_PERF_EVENTS=y kernel support configured?\n");
+ else
+ BUG_ON(clock_fd < 0);
+}
+
+static u64 get_clock(void)
+{
+ int ret;
+ u64 clk;
+
+ ret = read(clock_fd, &clk, sizeof(u64));
+ BUG_ON(ret != sizeof(u64));
+
+ return clk;
+}
+
+static double timeval2double(struct timeval *ts)
+{
+ return (double)ts->tv_sec +
+ (double)ts->tv_usec / (double)1000000;
+}
+
+static void alloc_mem(void **dst, size_t length)
+{
+ *dst = zalloc(length);
+ if (!dst)
+ die("memory allocation failed - maybe length is too large?\n");
+}
+
+static u64 do_memset_clock(memset_t fn, size_t len, bool prefault)
+{
+ u64 clock_start = 0ULL, clock_end = 0ULL;
+ void *dst = NULL;
+ int i;
+
+ alloc_mem(&dst, len);
+
+ if (prefault)
+ fn(dst, -1, len);
+
+ clock_start = get_clock();
+ for (i = 0; i < iterations; ++i)
+ fn(dst, i, len);
+ clock_end = get_clock();
+
+ free(dst);
+ return clock_end - clock_start;
+}
+
+static double do_memset_gettimeofday(memset_t fn, size_t len, bool prefault)
+{
+ struct timeval tv_start, tv_end, tv_diff;
+ void *dst = NULL;
+ int i;
+
+ alloc_mem(&dst, len);
+
+ if (prefault)
+ fn(dst, -1, len);
+
+ BUG_ON(gettimeofday(&tv_start, NULL));
+ for (i = 0; i < iterations; ++i)
+ fn(dst, i, len);
+ BUG_ON(gettimeofday(&tv_end, NULL));
+
+ timersub(&tv_end, &tv_start, &tv_diff);
+
+ free(dst);
+ return (double)((double)len / timeval2double(&tv_diff));
+}
+
+#define pf (no_prefault ? 0 : 1)
+
+#define print_bps(x) do { \
+ if (x < K) \
+ printf(" %14lf B/Sec", x); \
+ else if (x < K * K) \
+ printf(" %14lfd KB/Sec", x / K); \
+ else if (x < K * K * K) \
+ printf(" %14lf MB/Sec", x / K / K); \
+ else \
+ printf(" %14lf GB/Sec", x / K / K / K); \
+ } while (0)
+
+int bench_mem_memset(int argc, const char **argv,
+ const char *prefix __used)
+{
+ int i;
+ size_t len;
+ double result_bps[2];
+ u64 result_clock[2];
+
+ argc = parse_options(argc, argv, options,
+ bench_mem_memset_usage, 0);
+
+ if (use_clock)
+ init_clock();
+
+ len = (size_t)perf_atoll((char *)length_str);
+
+ result_clock[0] = result_clock[1] = 0ULL;
+ result_bps[0] = result_bps[1] = 0.0;
+
+ if ((s64)len <= 0) {
+ fprintf(stderr, "Invalid length:%s\n", length_str);
+ return 1;
+ }
+
+ /* same to without specifying either of prefault and no-prefault */
+ if (only_prefault && no_prefault)
+ only_prefault = no_prefault = false;
+
+ for (i = 0; routines[i].name; i++) {
+ if (!strcmp(routines[i].name, routine))
+ break;
+ }
+ if (!routines[i].name) {
+ printf("Unknown routine:%s\n", routine);
+ printf("Available routines...\n");
+ for (i = 0; routines[i].name; i++) {
+ printf("\t%s ... %s\n",
+ routines[i].name, routines[i].desc);
+ }
+ return 1;
+ }
+
+ if (bench_format == BENCH_FORMAT_DEFAULT)
+ printf("# Copying %s Bytes ...\n\n", length_str);
+
+ if (!only_prefault && !no_prefault) {
+ /* show both of results */
+ if (use_clock) {
+ result_clock[0] =
+ do_memset_clock(routines[i].fn, len, false);
+ result_clock[1] =
+ do_memset_clock(routines[i].fn, len, true);
+ } else {
+ result_bps[0] =
+ do_memset_gettimeofday(routines[i].fn,
+ len, false);
+ result_bps[1] =
+ do_memset_gettimeofday(routines[i].fn,
+ len, true);
+ }
+ } else {
+ if (use_clock) {
+ result_clock[pf] =
+ do_memset_clock(routines[i].fn,
+ len, only_prefault);
+ } else {
+ result_bps[pf] =
+ do_memset_gettimeofday(routines[i].fn,
+ len, only_prefault);
+ }
+ }
+
+ switch (bench_format) {
+ case BENCH_FORMAT_DEFAULT:
+ if (!only_prefault && !no_prefault) {
+ if (use_clock) {
+ printf(" %14lf Clock/Byte\n",
+ (double)result_clock[0]
+ / (double)len);
+ printf(" %14lf Clock/Byte (with prefault)\n ",
+ (double)result_clock[1]
+ / (double)len);
+ } else {
+ print_bps(result_bps[0]);
+ printf("\n");
+ print_bps(result_bps[1]);
+ printf(" (with prefault)\n");
+ }
+ } else {
+ if (use_clock) {
+ printf(" %14lf Clock/Byte",
+ (double)result_clock[pf]
+ / (double)len);
+ } else
+ print_bps(result_bps[pf]);
+
+ printf("%s\n", only_prefault ? " (with prefault)" : "");
+ }
+ break;
+ case BENCH_FORMAT_SIMPLE:
+ if (!only_prefault && !no_prefault) {
+ if (use_clock) {
+ printf("%lf %lf\n",
+ (double)result_clock[0] / (double)len,
+ (double)result_clock[1] / (double)len);
+ } else {
+ printf("%lf %lf\n",
+ result_bps[0], result_bps[1]);
+ }
+ } else {
+ if (use_clock) {
+ printf("%lf\n", (double)result_clock[pf]
+ / (double)len);
+ } else
+ printf("%lf\n", result_bps[pf]);
+ }
+ break;
+ default:
+ /* reaching this means there's some disaster: */
+ die("unknown format: %d\n", bench_format);
+ break;
+ }
+
+ return 0;
+}
diff --git a/tools/perf/bench/sched-messaging.c b/tools/perf/bench/sched-messaging.c
new file mode 100644
index 00000000..d1d1b30f
--- /dev/null
+++ b/tools/perf/bench/sched-messaging.c
@@ -0,0 +1,336 @@
+/*
+ *
+ * sched-messaging.c
+ *
+ * messaging: Benchmark for scheduler and IPC mechanisms
+ *
+ * Based on hackbench by Rusty Russell <rusty@rustcorp.com.au>
+ * Ported to perf by Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
+ *
+ */
+
+#include "../perf.h"
+#include "../util/util.h"
+#include "../util/parse-options.h"
+#include "../builtin.h"
+#include "bench.h"
+
+/* Test groups of 20 processes spraying to 20 receivers */
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/wait.h>
+#include <sys/time.h>
+#include <sys/poll.h>
+#include <limits.h>
+
+#define DATASIZE 100
+
+static bool use_pipes = false;
+static unsigned int loops = 100;
+static bool thread_mode = false;
+static unsigned int num_groups = 10;
+
+struct sender_context {
+ unsigned int num_fds;
+ int ready_out;
+ int wakefd;
+ int out_fds[0];
+};
+
+struct receiver_context {
+ unsigned int num_packets;
+ int in_fds[2];
+ int ready_out;
+ int wakefd;
+};
+
+static void barf(const char *msg)
+{
+ fprintf(stderr, "%s (error: %s)\n", msg, strerror(errno));
+ exit(1);
+}
+
+static void fdpair(int fds[2])
+{
+ if (use_pipes) {
+ if (pipe(fds) == 0)
+ return;
+ } else {
+ if (socketpair(AF_UNIX, SOCK_STREAM, 0, fds) == 0)
+ return;
+ }
+
+ barf(use_pipes ? "pipe()" : "socketpair()");
+}
+
+/* Block until we're ready to go */
+static void ready(int ready_out, int wakefd)
+{
+ char dummy;
+ struct pollfd pollfd = { .fd = wakefd, .events = POLLIN };
+
+ /* Tell them we're ready. */
+ if (write(ready_out, &dummy, 1) != 1)
+ barf("CLIENT: ready write");
+
+ /* Wait for "GO" signal */
+ if (poll(&pollfd, 1, -1) != 1)
+ barf("poll");
+}
+
+/* Sender sprays loops messages down each file descriptor */
+static void *sender(struct sender_context *ctx)
+{
+ char data[DATASIZE];
+ unsigned int i, j;
+
+ ready(ctx->ready_out, ctx->wakefd);
+
+ /* Now pump to every receiver. */
+ for (i = 0; i < loops; i++) {
+ for (j = 0; j < ctx->num_fds; j++) {
+ int ret, done = 0;
+
+again:
+ ret = write(ctx->out_fds[j], data + done,
+ sizeof(data)-done);
+ if (ret < 0)
+ barf("SENDER: write");
+ done += ret;
+ if (done < DATASIZE)
+ goto again;
+ }
+ }
+
+ return NULL;
+}
+
+
+/* One receiver per fd */
+static void *receiver(struct receiver_context* ctx)
+{
+ unsigned int i;
+
+ if (!thread_mode)
+ close(ctx->in_fds[1]);
+
+ /* Wait for start... */
+ ready(ctx->ready_out, ctx->wakefd);
+
+ /* Receive them all */
+ for (i = 0; i < ctx->num_packets; i++) {
+ char data[DATASIZE];
+ int ret, done = 0;
+
+again:
+ ret = read(ctx->in_fds[0], data + done, DATASIZE - done);
+ if (ret < 0)
+ barf("SERVER: read");
+ done += ret;
+ if (done < DATASIZE)
+ goto again;
+ }
+
+ return NULL;
+}
+
+static pthread_t create_worker(void *ctx, void *(*func)(void *))
+{
+ pthread_attr_t attr;
+ pthread_t childid;
+ int err;
+
+ if (!thread_mode) {
+ /* process mode */
+ /* Fork the receiver. */
+ switch (fork()) {
+ case -1:
+ barf("fork()");
+ break;
+ case 0:
+ (*func) (ctx);
+ exit(0);
+ break;
+ default:
+ break;
+ }
+
+ return (pthread_t)0;
+ }
+
+ if (pthread_attr_init(&attr) != 0)
+ barf("pthread_attr_init:");
+
+#ifndef __ia64__
+ if (pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN) != 0)
+ barf("pthread_attr_setstacksize");
+#endif
+
+ err = pthread_create(&childid, &attr, func, ctx);
+ if (err != 0) {
+ fprintf(stderr, "pthread_create failed: %s (%d)\n",
+ strerror(err), err);
+ exit(-1);
+ }
+ return childid;
+}
+
+static void reap_worker(pthread_t id)
+{
+ int proc_status;
+ void *thread_status;
+
+ if (!thread_mode) {
+ /* process mode */
+ wait(&proc_status);
+ if (!WIFEXITED(proc_status))
+ exit(1);
+ } else {
+ pthread_join(id, &thread_status);
+ }
+}
+
+/* One group of senders and receivers */
+static unsigned int group(pthread_t *pth,
+ unsigned int num_fds,
+ int ready_out,
+ int wakefd)
+{
+ unsigned int i;
+ struct sender_context *snd_ctx = malloc(sizeof(struct sender_context)
+ + num_fds * sizeof(int));
+
+ if (!snd_ctx)
+ barf("malloc()");
+
+ for (i = 0; i < num_fds; i++) {
+ int fds[2];
+ struct receiver_context *ctx = malloc(sizeof(*ctx));
+
+ if (!ctx)
+ barf("malloc()");
+
+
+ /* Create the pipe between client and server */
+ fdpair(fds);
+
+ ctx->num_packets = num_fds * loops;
+ ctx->in_fds[0] = fds[0];
+ ctx->in_fds[1] = fds[1];
+ ctx->ready_out = ready_out;
+ ctx->wakefd = wakefd;
+
+ pth[i] = create_worker(ctx, (void *)receiver);
+
+ snd_ctx->out_fds[i] = fds[1];
+ if (!thread_mode)
+ close(fds[0]);
+ }
+
+ /* Now we have all the fds, fork the senders */
+ for (i = 0; i < num_fds; i++) {
+ snd_ctx->ready_out = ready_out;
+ snd_ctx->wakefd = wakefd;
+ snd_ctx->num_fds = num_fds;
+
+ pth[num_fds+i] = create_worker(snd_ctx, (void *)sender);
+ }
+
+ /* Close the fds we have left */
+ if (!thread_mode)
+ for (i = 0; i < num_fds; i++)
+ close(snd_ctx->out_fds[i]);
+
+ /* Return number of children to reap */
+ return num_fds * 2;
+}
+
+static const struct option options[] = {
+ OPT_BOOLEAN('p', "pipe", &use_pipes,
+ "Use pipe() instead of socketpair()"),
+ OPT_BOOLEAN('t', "thread", &thread_mode,
+ "Be multi thread instead of multi process"),
+ OPT_UINTEGER('g', "group", &num_groups, "Specify number of groups"),
+ OPT_UINTEGER('l', "loop", &loops, "Specify number of loops"),
+ OPT_END()
+};
+
+static const char * const bench_sched_message_usage[] = {
+ "perf bench sched messaging <options>",
+ NULL
+};
+
+int bench_sched_messaging(int argc, const char **argv,
+ const char *prefix __used)
+{
+ unsigned int i, total_children;
+ struct timeval start, stop, diff;
+ unsigned int num_fds = 20;
+ int readyfds[2], wakefds[2];
+ char dummy;
+ pthread_t *pth_tab;
+
+ argc = parse_options(argc, argv, options,
+ bench_sched_message_usage, 0);
+
+ pth_tab = malloc(num_fds * 2 * num_groups * sizeof(pthread_t));
+ if (!pth_tab)
+ barf("main:malloc()");
+
+ fdpair(readyfds);
+ fdpair(wakefds);
+
+ total_children = 0;
+ for (i = 0; i < num_groups; i++)
+ total_children += group(pth_tab+total_children, num_fds,
+ readyfds[1], wakefds[0]);
+
+ /* Wait for everyone to be ready */
+ for (i = 0; i < total_children; i++)
+ if (read(readyfds[0], &dummy, 1) != 1)
+ barf("Reading for readyfds");
+
+ gettimeofday(&start, NULL);
+
+ /* Kick them off */
+ if (write(wakefds[1], &dummy, 1) != 1)
+ barf("Writing to start them");
+
+ /* Reap them all */
+ for (i = 0; i < total_children; i++)
+ reap_worker(pth_tab[i]);
+
+ gettimeofday(&stop, NULL);
+
+ timersub(&stop, &start, &diff);
+
+ switch (bench_format) {
+ case BENCH_FORMAT_DEFAULT:
+ printf("# %d sender and receiver %s per group\n",
+ num_fds, thread_mode ? "threads" : "processes");
+ printf("# %d groups == %d %s run\n\n",
+ num_groups, num_groups * 2 * num_fds,
+ thread_mode ? "threads" : "processes");
+ printf(" %14s: %lu.%03lu [sec]\n", "Total time",
+ diff.tv_sec,
+ (unsigned long) (diff.tv_usec/1000));
+ break;
+ case BENCH_FORMAT_SIMPLE:
+ printf("%lu.%03lu\n", diff.tv_sec,
+ (unsigned long) (diff.tv_usec/1000));
+ break;
+ default:
+ /* reaching here is something disaster */
+ fprintf(stderr, "Unknown format:%d\n", bench_format);
+ exit(1);
+ break;
+ }
+
+ return 0;
+}
diff --git a/tools/perf/bench/sched-pipe.c b/tools/perf/bench/sched-pipe.c
new file mode 100644
index 00000000..0c7454f8
--- /dev/null
+++ b/tools/perf/bench/sched-pipe.c
@@ -0,0 +1,127 @@
+/*
+ *
+ * sched-pipe.c
+ *
+ * pipe: Benchmark for pipe()
+ *
+ * Based on pipe-test-1m.c by Ingo Molnar <mingo@redhat.com>
+ * http://people.redhat.com/mingo/cfs-scheduler/tools/pipe-test-1m.c
+ * Ported to perf by Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
+ *
+ */
+
+#include "../perf.h"
+#include "../util/util.h"
+#include "../util/parse-options.h"
+#include "../builtin.h"
+#include "bench.h"
+
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <sys/wait.h>
+#include <linux/unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <assert.h>
+#include <sys/time.h>
+#include <sys/types.h>
+
+#define LOOPS_DEFAULT 1000000
+static int loops = LOOPS_DEFAULT;
+
+static const struct option options[] = {
+ OPT_INTEGER('l', "loop", &loops,
+ "Specify number of loops"),
+ OPT_END()
+};
+
+static const char * const bench_sched_pipe_usage[] = {
+ "perf bench sched pipe <options>",
+ NULL
+};
+
+int bench_sched_pipe(int argc, const char **argv,
+ const char *prefix __used)
+{
+ int pipe_1[2], pipe_2[2];
+ int m = 0, i;
+ struct timeval start, stop, diff;
+ unsigned long long result_usec = 0;
+
+ /*
+ * why does "ret" exist?
+ * discarding returned value of read(), write()
+ * causes error in building environment for perf
+ */
+ int __used ret, wait_stat;
+ pid_t pid, retpid;
+
+ argc = parse_options(argc, argv, options,
+ bench_sched_pipe_usage, 0);
+
+ assert(!pipe(pipe_1));
+ assert(!pipe(pipe_2));
+
+ pid = fork();
+ assert(pid >= 0);
+
+ gettimeofday(&start, NULL);
+
+ if (!pid) {
+ for (i = 0; i < loops; i++) {
+ ret = read(pipe_1[0], &m, sizeof(int));
+ ret = write(pipe_2[1], &m, sizeof(int));
+ }
+ } else {
+ for (i = 0; i < loops; i++) {
+ ret = write(pipe_1[1], &m, sizeof(int));
+ ret = read(pipe_2[0], &m, sizeof(int));
+ }
+ }
+
+ gettimeofday(&stop, NULL);
+ timersub(&stop, &start, &diff);
+
+ if (pid) {
+ retpid = waitpid(pid, &wait_stat, 0);
+ assert((retpid == pid) && WIFEXITED(wait_stat));
+ } else {
+ exit(0);
+ }
+
+ switch (bench_format) {
+ case BENCH_FORMAT_DEFAULT:
+ printf("# Executed %d pipe operations between two tasks\n\n",
+ loops);
+
+ result_usec = diff.tv_sec * 1000000;
+ result_usec += diff.tv_usec;
+
+ printf(" %14s: %lu.%03lu [sec]\n\n", "Total time",
+ diff.tv_sec,
+ (unsigned long) (diff.tv_usec/1000));
+
+ printf(" %14lf usecs/op\n",
+ (double)result_usec / (double)loops);
+ printf(" %14d ops/sec\n",
+ (int)((double)loops /
+ ((double)result_usec / (double)1000000)));
+ break;
+
+ case BENCH_FORMAT_SIMPLE:
+ printf("%lu.%03lu\n",
+ diff.tv_sec,
+ (unsigned long) (diff.tv_usec / 1000));
+ break;
+
+ default:
+ /* reaching here is something disaster */
+ fprintf(stderr, "Unknown format:%d\n", bench_format);
+ exit(1);
+ break;
+ }
+
+ return 0;
+}
generated by cgit (git 2.34.1) at 2024-12-20 20:48:09 +0000