[dm-devel] [PATCH v2 0/4] block/dm: use BIOSET_PERCPU_CACHE from bio_alloc_bioset

[Jens Axboe]

On 3/23/22 1:45 PM, Mike Snitzer wrote:
> Hi Jens,
> 
> I ran with your suggestion and DM now sees a ~7% improvement in hipri
> bio polling with io_uring (using dm-linear on null_blk, IOPS went from
> 900K to 966K).
> 
> Christoph,
> 
> I tried to address your review of the previous set. Patch 1 and 2 can
> obviously be folded but I left them split out for review purposes.
> Feel free to see if these changes are meaningful for nvme's use.
> Happy for either you to take on iterating on these block changes
> further or you letting me know what changes you'd like made.

Ran the usual peak testing, and it's good for about a 20% improvement
for me. 5.6M -> 6.6M IOPS on a single core, dm-linear.

-- 
Jens Axboe