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.
