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