Author: trasz
Date: Wed Jul 4 13:39:48 2018
New Revision: 335943
URL: https://svnweb.freebsd.org/changeset/base/335943
Log:
Add threaded pipe ping benchmark.
Obtained from: CheriBSD
MFC after: 2 weeks
Sponsored by: DARPA, AFRL
Modified:
head/tools/tools/syscall_timing/Makefile
head/tools/tools/syscall_timing/syscall_timing.c
Modified: head/tools/tools/syscall_timing/Makefile
==============================================================================
--- head/tools/tools/syscall_timing/Makefile Wed Jul 4 13:38:02 2018
(r335942)
+++ head/tools/tools/syscall_timing/Makefile Wed Jul 4 13:39:48 2018
(r335943)
@@ -6,6 +6,8 @@ PROG= syscall_timing
CFLAGS+= -static -O
MAN=
+LIBADD= pthread
+
WARNS= 6
.include <bsd.prog.mk>
Modified: head/tools/tools/syscall_timing/syscall_timing.c
==============================================================================
--- head/tools/tools/syscall_timing/syscall_timing.c Wed Jul 4 13:38:02
2018 (r335942)
+++ head/tools/tools/syscall_timing/syscall_timing.c Wed Jul 4 13:39:48
2018 (r335943)
@@ -44,6 +44,7 @@
#include <fcntl.h>
#include <inttypes.h>
#include <limits.h>
+#include <pthread.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
@@ -158,7 +159,74 @@ test_clock_gettime(uintmax_t num, uintmax_t int_arg __
return (i);
}
+struct pipepingtd_ctx {
+ int fd;
+ uintmax_t int_arg;
+};
+
+static void *
+pipepingtd_proc(void *arg)
+{
+ struct pipepingtd_ctx *ctxp;
+ int fd;
+ void *buf;
+ uintmax_t int_arg;
+ ssize_t ret;
+
+ ctxp = arg;
+ fd = ctxp->fd;
+ int_arg = ctxp->int_arg;
+
+ buf = malloc(int_arg);
+ if (buf == NULL)
+ err(1, "malloc");
+
+ for (;;) {
+ ret = read(fd, buf, int_arg);
+ if ((uintmax_t)ret != int_arg)
+ err(1, "read");
+ ret = write(fd, buf, int_arg);
+ if ((uintmax_t)ret != int_arg)
+ err(1, "write");
+ }
+}
+
static uintmax_t
+test_pipepingtd(uintmax_t num, uintmax_t int_arg, const char *path __unused)
+{
+ struct pipepingtd_ctx ctx;
+ char buf[int_arg];
+ pthread_t td;
+ uintmax_t i;
+ ssize_t ret;
+ int error, fd[2];
+
+ if (pipe(fd) < 0)
+ err(-1, "pipe");
+
+ ctx.fd = fd[1];
+ ctx.int_arg = int_arg;
+
+ error = pthread_create(&td, NULL, pipepingtd_proc, &ctx);
+ if (error != 0)
+ err(1, "pthread_create");
+
+ benchmark_start();
+ BENCHMARK_FOREACH(i, num) {
+ ret = write(fd[0], buf, int_arg);
+ if ((uintmax_t)ret != int_arg)
+ err(1, "write");
+ ret = read(fd[0], buf, int_arg);
+ if ((uintmax_t)ret != int_arg)
+ err(1, "read");
+ }
+ benchmark_stop();
+ pthread_cancel(td);
+
+ return (i);
+}
+
+static uintmax_t
test_gettimeofday(uintmax_t num, uintmax_t int_arg __unused, const char *path
__unused)
{
struct timeval tv;
@@ -752,6 +820,18 @@ static const struct test tests[] = {
*/
{ "pipeping_100000", test_pipeping, .t_flags = 0, .t_int = 100000 },
{ "pipeping_1000000", test_pipeping, .t_flags = 0, .t_int = 1000000 },
+#endif
+ { "pipepingtd_1", test_pipepingtd, .t_flags = 0, .t_int = 1 },
+ { "pipepingtd_10", test_pipepingtd, .t_flags = 0, .t_int = 10 },
+ { "pipepingtd_100", test_pipepingtd, .t_flags = 0, .t_int = 100 },
+ { "pipepingtd_1000", test_pipepingtd, .t_flags = 0, .t_int = 1000 },
+ { "pipepingtd_10000", test_pipepingtd, .t_flags = 0, .t_int = 10000 },
+#ifdef notyet
+ /*
+ * XXX: Doesn't work; kernel pipe buffer too small?
+ */
+ { "pipepingtd_100000", test_pipepingtd, .t_flags = 0, .t_int = 100000 },
+ { "pipepingtd_1000000", test_pipepingtd, .t_flags = 0, .t_int = 1000000
},
#endif
{ "gettimeofday", test_gettimeofday, .t_flags = 0 },
{ "getpriority", test_getpriority, .t_flags = 0 },
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