On 10/20/22 09:32, Christoph Hellwig wrote:
On Tue, Oct 18, 2022 at 08:50:54PM +0100, Pavel Begunkov wrote:
This series implements bio pcpu caching for normal / IRQ-driven I/O
extending REQ_ALLOC_CACHE currently limited to iopoll. The allocation side
still only works from non-irq context, which is the reason it's not enabled
by default, but turning it on for other users (e.g. filesystems) is
as a matter of passing a flag.
t/io_uring with an Optane SSD setup showed +7% for batches of 32 requests
and +4.3% for batches of 8.
This looks much nicer to me than the previous attempt exposing the bio
internals to io_uring, thanks.
Yeah, I saw the one Jens posted before but I wanted this one to be more
generic, i.e. applicable not only to io_uring. Thanks for taking a look.
--
Pavel Begunkov
