diff options
| author | Pavel Begunkov <asml.silence@gmail.com> | 2023-04-04 15:39:45 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-04-04 18:30:39 +0300 |
| commit | b8fb5b4fdd67f9d18109c5d21d44a8bd4ddb608b (patch) | |
| tree | d88a6c8049aeb16442461afa53182a2c603a5eb6 /Kconfig | |
| parent | e3ef728ff07b42668e7e12f49cd2f9055e064ec1 (diff) | |
| download | linux-b8fb5b4fdd67f9d18109c5d21d44a8bd4ddb608b.tar.xz | |
io_uring/rsrc: use non-pcpu refcounts for nodes
One problem with the current rsrc infra is that often updates will
generates lots of rsrc nodes, each carry pcpu refs. That takes quite a
lot of memory, especially if there is a stall, and takes lots of CPU
cycles. Only pcpu allocations takes >50 of CPU with a naive benchmark
updating files in a loop.
Replace pcpu refs with normal refcounting. There is already a hot path
avoiding atomics / refs, but following patches will further improve it.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/e9ed8a9457b331a26555ff9443afc64cdaab7247.1680576071.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'Kconfig')
0 files changed, 0 insertions, 0 deletions