Le 07/10/2015 13:44, Paweł Sadowski a écrit : > Hi, > > Can anyone tell if deep scrub is done using O_DIRECT flag or not? I'm > not able to verify that in source code. > > If not would it be possible to add such feature (maybe config option) to > help keeping Linux page cache in better shape? Note : this would probably be even more useful with backfills when inserting/replacing OSDs because they focus most of the IOs on these OSDs (I recently posted that we got far better performance when rebuilding OSDs if we selectively disabled the RAID card cache for them for example). Lionel _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
 |