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Subject[PATCH] perf bench: Add memset and memmove benchmarks
Date
This patch improves the memory bench suite adding the memset and
memmove benchmarks.
The mem-memory.c file has been renamed as mem.c.
mem.c file contains all the memory routines to be benchmarked
(currently memcpy, memset and memmove).

Two new options have been added:
o iteration: that is the numbers of loop executed during the bench.
o unaligned: to work with unaligned pointers (not fully tested).

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
---
tools/perf/Makefile | 2 +-
tools/perf/bench/bench.h | 4 +
tools/perf/bench/mem-memcpy.c | 193 ------------------------
tools/perf/bench/mem.c | 324 +++++++++++++++++++++++++++++++++++++++++
tools/perf/builtin-bench.c | 6 +
5 files changed, 335 insertions(+), 194 deletions(-)
delete mode 100644 tools/perf/bench/mem-memcpy.c
create mode 100644 tools/perf/bench/mem.c

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 652a470..b566467 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -433,7 +433,7 @@ BUILTIN_OBJS += builtin-bench.o
# Benchmark modules
BUILTIN_OBJS += bench/sched-messaging.o
BUILTIN_OBJS += bench/sched-pipe.o
-BUILTIN_OBJS += bench/mem-memcpy.o
+BUILTIN_OBJS += bench/mem.o

BUILTIN_OBJS += builtin-diff.o
BUILTIN_OBJS += builtin-help.o
diff --git a/tools/perf/bench/bench.h b/tools/perf/bench/bench.h
index f7781c6..7111d97 100644
--- a/tools/perf/bench/bench.h
+++ b/tools/perf/bench/bench.h
@@ -4,6 +4,10 @@
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_memmove(int argc, const char **argv,
+ const char *prefix __used);
+extern int bench_mem_memset(int argc, const char **argv,
+ const char *prefix __used);

#define BENCH_FORMAT_DEFAULT_STR "default"
#define BENCH_FORMAT_DEFAULT 0
diff --git a/tools/perf/bench/mem-memcpy.c b/tools/perf/bench/mem-memcpy.c
deleted file mode 100644
index 8977317..0000000
--- a/tools/perf/bench/mem-memcpy.c
+++ /dev/null
@@ -1,193 +0,0 @@
-/*
- * mem-memcpy.c
- *
- * memcpy: Simple memory copy in various ways
- *
- * Written by Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
- */
-#include <ctype.h>
-
-#include "../perf.h"
-#include "../util/util.h"
-#include "../util/parse-options.h"
-#include "../util/string.h"
-#include "../util/header.h"
-#include "bench.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 use_clock = 0;
-static int clock_fd;
-
-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_BOOLEAN('c', "clock", &use_clock,
- "Use CPU clock for measuring"),
- OPT_END()
-};
-
-struct routine {
- const char *name;
- const char *desc;
- void * (*fn)(void *dst, const void *src, size_t len);
-};
-
-struct routine routines[] = {
- { "default",
- "Default memcpy() provided by glibc",
- memcpy },
- { 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;
-}
-
-int bench_mem_memcpy(int argc, const char **argv,
- const char *prefix __used)
-{
- int i;
- void *dst, *src;
- size_t length;
- double bps = 0.0;
- struct timeval tv_start, tv_end, tv_diff;
- u64 clock_start, clock_end, clock_diff;
-
- clock_start = clock_end = clock_diff = 0ULL;
- argc = parse_options(argc, argv, options,
- bench_mem_memcpy_usage, 0);
-
- tv_diff.tv_sec = 0;
- tv_diff.tv_usec = 0;
- length = (size_t)perf_atoll((char *)length_str);
-
- if ((s64)length <= 0) {
- fprintf(stderr, "Invalid length:%s\n", length_str);
- return 1;
- }
-
- 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;
- }
-
- 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");
-
- if (bench_format == BENCH_FORMAT_DEFAULT) {
- printf("# Copying %s Bytes from %p to %p ...\n\n",
- length_str, src, dst);
- }
-
- if (use_clock) {
- init_clock();
- clock_start = get_clock();
- } else {
- BUG_ON(gettimeofday(&tv_start, NULL));
- }
-
- routines[i].fn(dst, src, length);
-
- if (use_clock) {
- clock_end = get_clock();
- clock_diff = clock_end - clock_start;
- } else {
- BUG_ON(gettimeofday(&tv_end, NULL));
- timersub(&tv_end, &tv_start, &tv_diff);
- bps = (double)((double)length / timeval2double(&tv_diff));
- }
-
- switch (bench_format) {
- case BENCH_FORMAT_DEFAULT:
- if (use_clock) {
- printf(" %14lf Clock/Byte\n",
- (double)clock_diff / (double)length);
- } else {
- if (bps < K)
- printf(" %14lf B/Sec\n", bps);
- else if (bps < K * K)
- printf(" %14lfd KB/Sec\n", bps / 1024);
- else if (bps < K * K * K)
- printf(" %14lf MB/Sec\n", bps / 1024 / 1024);
- else {
- printf(" %14lf GB/Sec\n",
- bps / 1024 / 1024 / 1024);
- }
- }
- break;
- case BENCH_FORMAT_SIMPLE:
- if (use_clock) {
- printf("%14lf\n",
- (double)clock_diff / (double)length);
- } else
- printf("%lf\n", bps);
- 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.c b/tools/perf/bench/mem.c
new file mode 100644
index 0000000..f667806
--- /dev/null
+++ b/tools/perf/bench/mem.c
@@ -0,0 +1,324 @@
+/*
+ * mem.c
+ *
+ * mem: test memory routine (memcpy, memset, memmove)
+ *
+ * Based on mem-memcpy.c by Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
+ *
+ * Ported to perf by Giuseppe Cavallaro <peppe.cavallaro@st.com>
+ *
+ */
+
+#include <ctype.h>
+
+#include "../perf.h"
+#include "../util/util.h"
+#include "../util/parse-options.h"
+#include "../util/string.h"
+#include "../util/header.h"
+#include "bench.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 use_clock;
+static int unaligned;
+static int clock_fd;
+static int iterations = 200;
+
+static const struct option options[] = {
+ OPT_BOOLEAN('a', "unaligned", &unaligned,
+ "To have unaligned pointers)"),
+ OPT_BOOLEAN('c', "clock", &use_clock,
+ "Use CPU clock for measuring"),
+ OPT_INTEGER('i', "iterations", &iterations,
+ "Number of loops (default: 200)"),
+ 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 test"),
+ OPT_END()
+};
+
+struct routine {
+ const char *name;
+ const char *desc;
+ void * (*cpy)(void *dst, const void *src, size_t len);
+ void * (*set)(void *s, int c, size_t len);
+};
+
+static struct routine routines[] = {
+ { "memcpy",
+ "Default memcpy() provided by C library",
+ memcpy,
+ NULL},
+ { "memmove",
+ "Default memmove() provided by C library",
+ memmove,
+ NULL },
+ { "memset",
+ "Default memset() provided by C library",
+ NULL,
+ memset }
+};
+
+static const char * const bench_mem_usage[] = {
+ "perf bench mem <routine> <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 int check_sizes(void)
+{
+ int length = (int)perf_atoll((char *)length_str);
+
+ if ((s64)length <= 0) {
+ fprintf(stderr, "Invalid length:%s\n", length_str);
+ return -1;
+ }
+ if (iterations <= 0) {
+ fprintf(stderr, "Invalid iterations: %d\n", iterations);
+ return -1;
+ }
+ return length;
+}
+
+static int check_routines(const char *prefix)
+{
+ int i;
+
+ for (i = 0; routines[i].name; i++) {
+ if (!strcmp(routines[i].name, prefix))
+ break;
+ }
+
+ if (!routines[i].name) {
+ printf("Unknown routine:%s\n", prefix);
+ printf("Available routines...\n");
+ for (i = 0; routines[i].name; i++) {
+ printf("\t%s ... %s\n",
+ routines[i].name, routines[i].desc);
+ }
+ return -1;
+ }
+ return i;
+}
+
+
+static void print_result(double bps, u64 clock_diff, size_t length)
+{
+ switch (bench_format) {
+ case BENCH_FORMAT_DEFAULT:
+ if (use_clock) {
+ printf(" %14lf Clock/Byte\n",
+ (double)clock_diff / (double)length);
+ } else {
+ if (bps < K)
+ printf(" %14lf B/Sec\n", bps);
+ else if (bps < K * K)
+ printf(" %14lfd KB/Sec\n", bps / K);
+ else if (bps < K * K * K)
+ printf(" %14lf MB/Sec\n", bps / K / K);
+ else {
+ printf(" %14lf GB/Sec\n",
+ bps / K / K / K);
+ }
+ }
+ break;
+ case BENCH_FORMAT_SIMPLE:
+ if (use_clock) {
+ printf("%14lf\n",
+ (double)clock_diff / (double)length);
+ } else
+ printf("%lf\n", bps);
+ break;
+ default:
+ /* reaching this means there's some disaster: */
+ die("unknown format: %d\n", bench_format);
+ break;
+ }
+ return;
+}
+
+static int bench_mem(int argc, const char **argv, const char *prefix __used)
+{
+ int i, n;
+ int length;
+ unsigned long bytes;
+ void *dst, *src;
+ double bps = 0.0;
+ struct timeval tv_start, tv_end, tv_diff;
+ u64 clock_start, clock_end, clock_diff;
+
+ clock_start = clock_end = clock_diff = 0ULL;
+ argc = parse_options(argc, argv, options,
+ bench_mem_usage, 0);
+
+ tv_diff.tv_sec = 0;
+ tv_diff.tv_usec = 0;
+
+ length = check_sizes();
+ if (length < 0)
+ return 1;
+
+ i = check_routines(prefix);
+ if (i < 0)
+ return 1;
+
+ 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");
+
+ if (unaligned) {
+ src = src + 1;
+ dst = dst + 1;
+ length--;
+ }
+
+ if (bench_format == BENCH_FORMAT_DEFAULT) {
+ printf("# Copying %s Bytes from %p to %p ... (loop %d)\n\n",
+ length_str, src, dst, iterations);
+ }
+
+ if (use_clock) {
+ init_clock();
+ clock_start = get_clock();
+ } else
+ BUG_ON(gettimeofday(&tv_start, NULL));
+
+ for (n = 0; n < iterations; n++)
+ routines[i].cpy(dst, src, (size_t)length);
+
+ if (use_clock) {
+ clock_end = get_clock();
+ clock_diff = clock_end - clock_start;
+ } else {
+ BUG_ON(gettimeofday(&tv_end, NULL));
+ timersub(&tv_end, &tv_start, &tv_diff);
+ bytes = length * iterations;
+ bps = (double)(bytes / timeval2double(&tv_diff));
+ }
+
+ print_result(bps, clock_diff, (size_t)length);
+
+ return 0;
+}
+
+int bench_mem_memcpy(int argc, const char **argv, const char *prefix __used)
+{
+ return bench_mem(argc, argv, "memcpy");
+}
+
+int bench_mem_memmove(int argc, const char **argv, const char *prefix __used)
+{
+ return bench_mem(argc, argv, "memmove");
+}
+
+int bench_mem_memset(int argc, const char **argv, const char *prefix __used)
+{
+ int i, n;
+ int length;
+ unsigned long bytes;
+ void *s;
+ double bps = 0.0;
+ struct timeval tv_start, tv_end, tv_diff;
+ u64 clock_start, clock_end, clock_diff;
+
+ clock_start = 0ULL;
+ clock_end = 0ULL;
+ clock_diff = 0ULL;
+ argc = parse_options(argc, argv, options,
+ bench_mem_usage, 0);
+
+ tv_diff.tv_sec = 0;
+ tv_diff.tv_usec = 0;
+
+ length = check_sizes();
+ if (length < 0)
+ return 1;
+
+ i = check_routines("memset");
+ if (i < 0)
+ return 1;
+
+ s = zalloc(length);
+ if (!s)
+ die("memory allocation failed - maybe length is too large?\n");
+
+ if (unaligned) {
+ s = s + 1;
+ length--;
+ }
+
+ if (bench_format == BENCH_FORMAT_DEFAULT) {
+ printf("# Fill %s Bytes (to 0) to %p ... (loop %d)\n\n",
+ length_str, s, iterations);
+ }
+
+ if (use_clock) {
+ init_clock();
+ clock_start = get_clock();
+ } else
+ BUG_ON(gettimeofday(&tv_start, NULL));
+
+ for (n = 0; n < iterations; n++)
+ routines[i].set(s, 0, (size_t)length);
+
+ if (use_clock) {
+ clock_end = get_clock();
+ clock_diff = clock_end - clock_start;
+ } else {
+ BUG_ON(gettimeofday(&tv_end, NULL));
+ timersub(&tv_end, &tv_start, &tv_diff);
+ bytes = length * iterations;
+ bps = (double)(bytes / timeval2double(&tv_diff));
+ }
+
+ print_result(bps, clock_diff, (size_t)length);
+
+ return 0;
+}
diff --git a/tools/perf/builtin-bench.c b/tools/perf/builtin-bench.c
index 4699677..beb0984 100644
--- a/tools/perf/builtin-bench.c
+++ b/tools/perf/builtin-bench.c
@@ -52,6 +52,12 @@ static struct bench_suite mem_suites[] = {
{ "memcpy",
"Simple memory copy in various ways",
bench_mem_memcpy },
+ { "memmove",
+ "Simple memory move in various ways",
+ bench_mem_memmove },
+ { "memset",
+ NULL,
+ bench_mem_memset },
suite_all,
{ NULL,
NULL,
--
1.6.0.4


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