On Tue, Mar 01, 2022 at 04:48:00PM -0800, Ivan Babrou <ivan@xxxxxxxxxxxxxx> wrote: > avg = 1100789 nsecs, total: 27051906434 nsecs, count: 24575 Thank you for checking. > Looks like you were right that targeted flush is not going to be as good. Still lots of work to do at once :-/ BTW what was the "last good" kernel that you use as baseline for comparisons? (I can't find it in the thread and I only assume we're comparing against pre-rstat switch, i.e. last good < v5.13?) Regards, Michal