[ceph-users] Re: Osd-max-backfills locked to 1000

2022-08-05 Thread Sridhar Seshasayee
> > Thank you, that explains indeed a few things! :-) > > Thanks for the feedback! This helps a lot in terms of things to optimize in the mClock profiles. But the underlying problem is that we see iowaits/slowdowns on the clients > while rebalancing. > I added some nvme storage and am moving the d

[ceph-users] Re: Osd-max-backfills locked to 1000

2022-08-05 Thread Sridhar Seshasayee
Hi Kenneth, > Any clues here? Thank you very much! > I assume you are running a Quincy version on your cluster. If so, from the Quincy release, mClock is set to be the default queuing scheduler. It was earlier set to the weighted priority queue scheduler (wpq). To maximize the effectiveness of