optimise ctx's refs grabbing in io_uring
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Earlier versions · 1
| Version | Posted | Patches | Replies | Status |
|---|---|---|---|---|
| v1 | 2 patches | 10 replies | Superseded |
Patches in v4 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/2 | pcpu_ref: add percpu_ref_tryget_many()include/ | +21 | 0 replies | |
| 2/2 | io_uring: batch getting pcpu referencesfs/ | +17 | 5 replies |
Reviews trailers per patch
1 of 2 patches has a Reviewed-by or Acked-by.
| Patch | Tejun Heo | Dennis Zhou |
|---|---|---|
| 1/2 | A-b | A-b |
| 2/2 |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.
Cover letter [PATCH v4 0/2] optimise ctx's refs grabbing in io_uring
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(-)
Signature · 1 line
2.24.0