Re: [PATCH 5/6] io_uring: enable use of bio alloc cache

On 8/12/21 10:39 AM, Christoph Hellwig wrote:

On Thu, Aug 12, 2021 at 09:41:48AM -0600, Jens Axboe wrote:

quoted

Mark polled IO as being safe for dipping into the bio allocation
cache, in case the targeted bio_set has it enabled.

This brings an IOPOLL gen2 Optane QD=128 workload from ~3.0M IOPS to
~3.3M IOPS.

Looks good,

Reviewed-by: Christoph Hellwig <hch@lst.de>

Didn't the cover letter say 3.5M+ IOPS, though?

It does indeed, we've had some recent improvements so the range is now
more in the 3.2M -> 3.5M IOPS with the cache. Didn't update it, as it's
still roughly the same 10% bump.

-- 
Jens Axboe