On 5/15/2023 4:53 PM, Dan Williams wrote:
Jane Chu wrote:
Hi,
Does it make sense to mark this patch a candidate for stable branch?
These numbers:
* linux-block (for-next) # grep slat pmem*fio | column -t
nowait-off-1.fio: slat (nsec): min=431, max=50423k, avg=9424.06
nowait-off-2.fio: slat (nsec): min=420, max=35992k, avg=9193.94
nowait-off-3.fio: slat (nsec): min=430, max=40737k, avg=9244.24
nowait-on-1.fio: slat (nsec): min=1232, max=40098k, avg=7518.60
nowait-on-2.fio: slat (nsec): min=1303, max=52107k, avg=7423.37
nowait-on-3.fio: slat (nsec): min=1123, max=40193k, avg=7409.08
Show there is a potential for a regression for min latency. So I would
like to see this patch upstream and shipping for a while before flagging
it for backport.
Good point, sorry I missed noticing that.
I'm curious at why the submission latency is ~3 times long with
QUEUE_FLAG_NOWAIT.
thanks,
-jane
