| commit | 2b85edfc0c90efc68dea3d665bb4111bf0694e05 | |
| author | Pavel Begunkov <asml.silence@gmail.com> | |
| Sat, 28 Dec 2019 11:13:03 +0000 (28 14:13 +0300) | ||
| committer | Jens Axboe <axboe@kernel.dk> | |
| Tue, 21 Jan 2020 00:04:02 +0000 (20 17:04 -0700) | ||
| tree | 9e5cb950fa5d4fbafd3981e569ef3d9c856cf127 | treesnapshot (tar.gz zip) |
| parent | 4e5ef02317b12e2ed3d604281ffb6b75261f7612 | commitdiff |
io_uring: batch getting pcpu references
percpu_ref_tryget() has its own overhead. Instead getting a reference
for each request, grab a bunch once per io_submit_sqes().
~5% throughput boost for a "submit and wait 128 nops" benchmark.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
__io_req_free_empty() -> __io_req_do_free()
Signed-off-by: Jens Axboe <axboe@kernel.dk>
percpu_ref_tryget() has its own overhead. Instead getting a reference
for each request, grab a bunch once per io_submit_sqes().
~5% throughput boost for a "submit and wait 128 nops" benchmark.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
__io_req_free_empty() -> __io_req_do_free()
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| fs/io_uring.c | diffblobblamehistory |