Re: [ceph-users] MDS memory usage

2015-11-25 Thread Gregory Farnum
On Wed, Nov 25, 2015 at 12:30 AM, Mike Miller wrote: > Hi Greg, > > thanks very much. This is clear to me now. > > As for 'MDS cluster', I thought that this was not recommended at this stage? > I would very much like to have a number >1 of MDS in my cluster as this > would probably help very much

Re: [ceph-users] MDS memory usage

2015-11-24 Thread Mike Miller
Hi Greg, thanks very much. This is clear to me now. As for 'MDS cluster', I thought that this was not recommended at this stage? I would very much like to have a number >1 of MDS in my cluster as this would probably help very much to balance the load. But I am afraid what everybody says about

Re: [ceph-users] MDS memory usage

2015-11-24 Thread Gregory Farnum
On Tue, Nov 24, 2015 at 10:26 PM, Mike Miller wrote: > Hi, > > in my cluster with 16 OSD daemons and more than 20 million files on cephfs, > the memory usage on MDS is around 16 GB. It seems that 'mds cache size' has > no real influence on the memory usage of the MDS. > > Is there a formula that r

[ceph-users] MDS memory usage

2015-11-24 Thread Mike Miller
Hi, in my cluster with 16 OSD daemons and more than 20 million files on cephfs, the memory usage on MDS is around 16 GB. It seems that 'mds cache size' has no real influence on the memory usage of the MDS. Is there a formula that relates 'mds cache size' directly to memory consumption on the