Re: [PATCH for-next v3 0/3] implement pcpu bio caching for IRQ I/O

Jens Axboe
2022-10-25T19:42:21Z

On Fri, 21 Oct 2022 11:34:04 +0100, Pavel Begunkov wrote:
> Add bio pcpu caching for normal / IRQ-driven I/O extending REQ_ALLOC_CACHE,
> which was limited to iopoll. t/io_uring with an Optane SSD setup showed +7%
> for batches of 32 requests and +4.3% for batches of 8.
>
> IRQ, 128/32/32, cache off
> IOPS=59.08M, BW=28.84GiB/s, IOS/call=31/31
> IOPS=59.30M, BW=28.96GiB/s, IOS/call=32/32
> IOPS=59.97M, BW=29.28GiB/s, IOS/call=31/31
> IOPS=59.92M, BW=29.26GiB/s, IOS/call=32/32
> IOPS=59.81M, BW=29.20GiB/s, IOS/call=32/31
>
> [...]

Applied, thanks!

[1/3] bio: split pcpu cache part of bio_put into a helper
commit: 0b0735a8c24f006d2d9d8b2b408b8c90f3163abd
[2/3] block/bio: add pcpu caching for non-polling bio_put
commit: 13a184e269656994180e8c64ff56db03ed737902
[3/3] io_uring/rw: enable bio caches for IRQ rw
commit: 93dad04746ea1340dec267f0e98ac42e8bc67160

Best regards,
--
Jens Axboe