Re: [ceph-users] PGs per OSD guidance

2017-07-19 Thread David Turner
uly 2017 6:05 PM > > To: 'ceph-users@lists.ceph.com' > > Subject: [ceph-users] PGs per OSD guidance > > > > Hi All, > >I have been reviewing the sizing of our PGs with a view to some > > intermittent performance issues. When we have scrubs running, even whe

Re: [ceph-users] PGs per OSD guidance

2017-07-19 Thread Adrian Saul
Anyone able to offer any advice on this? Cheers, Adrian > -Original Message- > From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of > Adrian Saul > Sent: Friday, 14 July 2017 6:05 PM > To: 'ceph-users@lists.ceph.com' > Subject: [ceph-users] PG

[ceph-users] PGs per OSD guidance

2017-07-14 Thread Adrian Saul
Hi All, I have been reviewing the sizing of our PGs with a view to some intermittent performance issues. When we have scrubs running, even when only a few are, we can sometimes get severe impacts on the performance of RBD images, enough to start causing VMs to appear stalled or