Le 09/02/2016 20:07, Kris Jurka a écrit : > > > On 2/9/2016 10:11 AM, Lionel Bouton wrote: > >> Actually if I understand correctly how PG splitting works the next spike >> should be <n> times smaller and spread over <n> times the period (where >> <n> is the number of subdirectories created during each split which >> seems to be 15 according to OSDs' directory layout). >> > > I would expect that splitting one directory would take the same amount > of time as it did this time, it's just that now there will be N times > as many directories to split because of the previous splits. So the > duration of the spike would be quite a bit longer.
Oops I missed this bit, I believe you are right: the spike duration should be ~16x longer but the slowdown roughly the same over this new period :-( Lionel _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
