From: Zorro Lang <zlang@redhat.com>
To: fstests@vger.kernel.org
Cc: bfoster@redhat.com, io-uring@vger.kernel.org
Subject: [PATCH v4 2/5] fsstress: reduce the number of events when io_setup
Date: Mon, 7 Sep 2020 01:55:10 +0800 [thread overview]
Message-ID: <20200906175513.17595-3-zlang@redhat.com> (raw)
In-Reply-To: <20200906175513.17595-1-zlang@redhat.com>
The original number(128) of aio events for io_setup too big. When try
to run lots of fsstress processes(e.g. -p 1000) always hit io_setup
EAGAIN error, due to the nr_events exceeds the limit of available
events. Due to each fsstress process only does once libaio read/write
operation each time. So reduce the aio events number to 1, to make more
fsstress processes can do AIO test.
Signed-off-by: Zorro Lang <zlang@redhat.com>
---
ltp/fsstress.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/ltp/fsstress.c b/ltp/fsstress.c
index 2c584ef0..b4a51376 100644
--- a/ltp/fsstress.c
+++ b/ltp/fsstress.c
@@ -28,6 +28,7 @@
#endif
#ifdef AIO
#include <libaio.h>
+#define AIO_ENTRIES 1
io_context_t io_ctx;
#endif
#ifdef URING
@@ -699,8 +700,8 @@ int main(int argc, char **argv)
}
procid = i;
#ifdef AIO
- if (io_setup(128, &io_ctx) != 0) {
- fprintf(stderr, "io_setup failed");
+ if (io_setup(AIO_ENTRIES, &io_ctx) != 0) {
+ fprintf(stderr, "io_setup failed\n");
exit(1);
}
#endif
--
2.20.1
next prev parent reply other threads:[~2020-09-06 17:55 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-06 17:55 [PATCH v4 0/5] fsstress,fsx: add io_uring test and do some fix Zorro Lang
2020-09-06 17:55 ` [PATCH v4 1/5] fsstress: add IO_URING read and write operations Zorro Lang
2020-09-08 18:34 ` Brian Foster
2020-09-06 17:55 ` Zorro Lang [this message]
2020-09-08 18:34 ` [PATCH v4 2/5] fsstress: reduce the number of events when io_setup Brian Foster
2020-09-06 17:55 ` [PATCH v4 3/5] fsstress: fix memory leak in do_aio_rw Zorro Lang
2020-09-08 18:35 ` Brian Foster
2020-09-06 17:55 ` [PATCH v4 4/5] fsx: introduce fsx_rw to combine aio_rw with general read and write Zorro Lang
2020-09-08 18:35 ` Brian Foster
2020-09-06 17:55 ` [PATCH v4 5/5] fsx: add IO_URING test Zorro Lang
2020-09-08 18:36 ` Brian Foster
2020-09-09 3:58 ` Zorro Lang
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