Messages in this thread | | | From | Pavel Begunkov <> | Subject | [PATCH v4 0/2] optimise ctx's refs grabbing in io_uring | Date | Sat, 28 Dec 2019 14:13:01 +0300 |
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Optimise percpu_ref_tryget() by not calling it for each request, but batching it. This gave a measurable ~5% performance boost for large QD.
v2: fix uncommited plug (Jens Axboe) better comments for percpu_ref_tryget_many (Dennis Zhou) amortise across io_uring_enter() boundary
v3: drop "batching across syscalls" remove error handling in io_submit_sqes() from common path
v4: fix error handling
Pavel Begunkov (2): pcpu_ref: add percpu_ref_tryget_many() io_uring: batch getting pcpu references
fs/io_uring.c | 26 +++++++++++++++++--------- include/linux/percpu-refcount.h | 26 +++++++++++++++++++++----- 2 files changed, 38 insertions(+), 14 deletions(-)
-- 2.24.0
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