* [PATCH liburing 2/3] examples: add a simple single-shot poll benchmark
2022-06-14 14:36 [PATCH liburing 0/3] single-issuer and poll benchmark Pavel Begunkov
2022-06-14 14:36 ` [PATCH liburing 1/3] io_uring: update headers with IORING_SETUP_SINGLE_ISSUER Pavel Begunkov
@ 2022-06-14 14:36 ` Pavel Begunkov
2022-06-14 14:57 ` Ammar Faizi
2022-06-14 14:36 ` [PATCH liburing 3/3] tests: test IORING_SETUP_SINGLE_ISSUER Pavel Begunkov
2 siblings, 1 reply; 6+ messages in thread
From: Pavel Begunkov @ 2022-06-14 14:36 UTC (permalink / raw)
To: io-uring; +Cc: Jens Axboe, asml.silence
Signed-off-by: Pavel Begunkov <[email protected]>
---
examples/Makefile | 3 +-
examples/poll-bench.c | 108 ++++++++++++++++++++++++++++++++++++++++++
2 files changed, 110 insertions(+), 1 deletion(-)
create mode 100644 examples/poll-bench.c
diff --git a/examples/Makefile b/examples/Makefile
index 95a45f9..8e7067f 100644
--- a/examples/Makefile
+++ b/examples/Makefile
@@ -13,7 +13,8 @@ endif
example_srcs := \
io_uring-cp.c \
io_uring-test.c \
- link-cp.c
+ link-cp.c \
+ poll-bench.c
all_targets :=
diff --git a/examples/poll-bench.c b/examples/poll-bench.c
new file mode 100644
index 0000000..72ba8ef
--- /dev/null
+++ b/examples/poll-bench.c
@@ -0,0 +1,108 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Description: test io_uring poll handling
+ *
+ */
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <signal.h>
+#include <poll.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+
+#include "liburing.h"
+
+static char buf[4096];
+static unsigned long runtime_ms = 30000;
+
+static unsigned long gettimeofday_ms(void)
+{
+ struct timeval tv;
+
+ gettimeofday(&tv, NULL);
+ return (tv.tv_sec * 1000) + (tv.tv_usec / 1000);
+}
+
+int main(void)
+{
+ unsigned long tstop;
+ unsigned long nr_reqs = 0;
+ struct io_uring_cqe *cqe;
+ struct io_uring_sqe *sqe;
+ struct io_uring ring;
+ int pipe1[2];
+ int ret, i, qd = 128;
+
+ if (argc > 1)
+ return 0;
+
+ if (pipe(pipe1) != 0) {
+ perror("pipe");
+ return 1;
+ }
+
+ ret = io_uring_queue_init(1024, &ring, IORING_SETUP_SINGLE_ISSUER);
+ if (ret == -EINVAL) {
+ fprintf(stderr, "can't single\n");
+ ret = io_uring_queue_init(1024, &ring, 0);
+ }
+ if (ret) {
+ fprintf(stderr, "child: ring setup failed: %d\n", ret);
+ return 1;
+ }
+
+ ret = io_uring_register_files(&ring, pipe1, 2);
+ if (ret < 0) {
+ fprintf(stderr, "io_uring_register_files failed\n");
+ return 1;
+ }
+
+ ret = io_uring_register_ring_fd(&ring);
+ if (ret < 0) {
+ fprintf(stderr, "io_uring_register_ring_fd failed\n");
+ return 1;
+ }
+
+ tstop = gettimeofday_ms() + runtime_ms;
+ do {
+ for (i = 0; i < qd; i++) {
+ sqe = io_uring_get_sqe(&ring);
+ io_uring_prep_poll_add(sqe, 0, POLLIN);
+ sqe->flags |= IOSQE_FIXED_FILE;
+ sqe->user_data = 1;
+ }
+
+ ret = io_uring_submit(&ring);
+ if (ret != qd) {
+ fprintf(stderr, "child: sqe submit failed: %d\n", ret);
+ return 1;
+ }
+
+ ret = write(pipe1[1], buf, 1);
+ if (ret != 1) {
+ fprintf(stderr, "write failed %i\n", errno);
+ return 1;
+ }
+ ret = read(pipe1[0], buf, 1);
+ if (ret != 1) {
+ fprintf(stderr, "read failed %i\n", errno);
+ return 1;
+ }
+
+ for (i = 0; i < qd; i++) {
+ ret = io_uring_wait_cqe(&ring, &cqe);
+ if (ret < 0) {
+ fprintf(stderr, "child: wait completion %d\n", ret);
+ break;
+ }
+ io_uring_cqe_seen(&ring, cqe);
+ nr_reqs++;
+ }
+ } while (gettimeofday_ms() < tstop);
+
+ fprintf(stderr, "requests/s: %lu\n", nr_reqs * 1000UL / runtime_ms);
+ return 0;
+}
--
2.36.1
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH liburing 3/3] tests: test IORING_SETUP_SINGLE_ISSUER
2022-06-14 14:36 [PATCH liburing 0/3] single-issuer and poll benchmark Pavel Begunkov
2022-06-14 14:36 ` [PATCH liburing 1/3] io_uring: update headers with IORING_SETUP_SINGLE_ISSUER Pavel Begunkov
2022-06-14 14:36 ` [PATCH liburing 2/3] examples: add a simple single-shot poll benchmark Pavel Begunkov
@ 2022-06-14 14:36 ` Pavel Begunkov
2 siblings, 0 replies; 6+ messages in thread
From: Pavel Begunkov @ 2022-06-14 14:36 UTC (permalink / raw)
To: io-uring; +Cc: Jens Axboe, asml.silence
Signed-off-by: Pavel Begunkov <[email protected]>
---
test/Makefile | 1 +
test/single-issuer.c | 173 +++++++++++++++++++++++++++++++++++++++++++
2 files changed, 174 insertions(+)
create mode 100644 test/single-issuer.c
diff --git a/test/Makefile b/test/Makefile
index ab031e0..0750996 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -169,6 +169,7 @@ test_srcs := \
wakeup-hang.c \
xattr.c \
skip-cqe.c \
+ single-issuer.c \
# EOL
diff --git a/test/single-issuer.c b/test/single-issuer.c
new file mode 100644
index 0000000..6d1b917
--- /dev/null
+++ b/test/single-issuer.c
@@ -0,0 +1,173 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Description: run various nop tests
+ *
+ */
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <error.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+#include "liburing.h"
+#include "test.h"
+
+static pid_t pid;
+
+static pid_t fork_t(void)
+{
+ pid = fork();
+ if (pid == -1) {
+ fprintf(stderr, "fork failed\n");
+ exit(1);
+ }
+ return pid;
+}
+
+static int wait_child_t(void)
+{
+ int wstatus;
+
+ if (waitpid(pid, &wstatus, 0) == (pid_t)-1) {
+ perror("waitpid()");
+ exit(1);
+ }
+ if (!WIFEXITED(wstatus)) {
+ fprintf(stderr, "child failed %i\n", WEXITSTATUS(wstatus));
+ exit(1);
+ }
+
+ return WEXITSTATUS(wstatus);
+}
+
+static int try_submit(struct io_uring *ring)
+{
+ struct io_uring_cqe *cqe;
+ struct io_uring_sqe *sqe;
+ int ret;
+
+ sqe = io_uring_get_sqe(ring);
+ io_uring_prep_nop(sqe);
+ sqe->user_data = 42;
+
+ ret = io_uring_submit(ring);
+ if (ret < 0)
+ return ret;
+
+ if (ret != 1)
+ error(1, ret, "submit %i", ret);
+ ret = io_uring_wait_cqe(ring, &cqe);
+ if (ret)
+ error(1, ret, "wait fail %i", ret);
+
+ if (cqe->res || cqe->user_data != 42)
+ error(1, ret, "invalid cqe");
+
+ io_uring_cqe_seen(ring, cqe);
+ return 0;
+}
+
+int main(int argc, char *argv[])
+{
+ struct io_uring ring;
+ int ret;
+
+ if (argc > 1)
+ return 0;
+
+ ret = io_uring_queue_init(8, &ring, IORING_SETUP_SINGLE_ISSUER);
+ if (ret == -EINVAL) {
+ fprintf(stderr, "SETUP_SINGLE_ISSUER is not supported, skip\n");
+ return 0;
+ } else if (ret) {
+ error(1, ret, "ring init (1) %i", ret);
+ }
+
+ /* test that the creator iw allowed to submit */
+ ret = try_submit(&ring);
+ if (ret) {
+ fprintf(stderr, "the creater can't submit %i\n", ret);
+ return 1;
+ }
+
+ /* test that a second submitter doesn't succeed */
+ if (!fork_t()) {
+ ret = try_submit(&ring);
+ if (ret != -EEXIST) {
+ fprintf(stderr, "not owner child could submit %i\n", ret);
+ exit(1);
+ }
+ exit(0);
+ } else {
+ if (wait_child_t())
+ return 1;
+ }
+ io_uring_queue_exit(&ring);
+
+
+ /* test that the first submitter but not creator can submit */
+ ret = io_uring_queue_init(8, &ring, IORING_SETUP_SINGLE_ISSUER);
+ if (ret)
+ error(1, ret, "ring init (2) %i", ret);
+
+ if (!fork_t()) {
+ ret = try_submit(&ring);
+ if (ret) {
+ fprintf(stderr, "not owner child could submit %i\n", ret);
+ exit(1);
+ }
+ exit(0);
+ } else {
+ if (wait_child_t())
+ return 1;
+ }
+ io_uring_queue_exit(&ring);
+
+ /* test that anyone can submit to a SQPOLL|SINGLE_ISSUER ring */
+ ret = io_uring_queue_init(8, &ring, IORING_SETUP_SINGLE_ISSUER|IORING_SETUP_SQPOLL);
+ if (ret)
+ error(1, ret, "ring init (3) %i", ret);
+
+ ret = try_submit(&ring);
+ if (ret) {
+ fprintf(stderr, "SQPOLL submit failed (creator) %i\n", ret);
+ exit(1);
+ }
+
+ if (!fork_t()) {
+ ret = try_submit(&ring);
+ if (ret) {
+ fprintf(stderr, "SQPOLL submit failed (child) %i\n", ret);
+ exit(1);
+ }
+ exit(0);
+ } else {
+ if (wait_child_t())
+ return 1;
+ }
+ io_uring_queue_exit(&ring);
+
+ /* test that IORING_ENTER_REGISTERED_RING doesn't break anything */
+ ret = io_uring_queue_init(8, &ring, IORING_SETUP_SINGLE_ISSUER);
+ if (ret)
+ error(1, ret, "ring init (4) %i", ret);
+
+ if (!fork_t()) {
+ ret = try_submit(&ring);
+ if (ret) {
+ fprintf(stderr, "not owner child could submit %i\n", ret);
+ exit(1);
+ }
+ exit(0);
+ } else {
+ if (wait_child_t())
+ return 1;
+ }
+ io_uring_queue_exit(&ring);
+
+ return 0;
+}
--
2.36.1
^ permalink raw reply related [flat|nested] 6+ messages in thread