Gandalf Corvotempesta
2017-Feb-23 09:57 UTC
[Gluster-users] Gluster and ZFS: how much RAM?
How much RAM is suggested for gluster with ZFS (no dedup) ? Are 16GB enough with an SSD L2ARC? 8gb for the arc, 8gb for gluster and OS. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.gluster.org/pipermail/gluster-users/attachments/20170223/7b55dd70/attachment.html>
On 23/02/2017 7:57 PM, Gandalf Corvotempesta wrote:> How much RAM is suggested for gluster with ZFS (no dedup) ? > > Are 16GB enough with an SSD L2ARC? > > 8gb for the arc, 8gb for gluster and OS.I have a 8GB limitation for my ZFS arc. Gluster (server+client) only seems to use about 3-4GB, so you should be fine with 16GB For most people, running KVM VM's over zfs direct or via gluster over zfs, the l2arc doesn't seem to be much use, very poor hit ratio, less than 6% -- Lindsay Mathieson
On Thu, Feb 23, 2017 at 3:57 AM, Gandalf Corvotempesta < gandalf.corvotempesta at gmail.com> wrote:> How much RAM is suggested for gluster with ZFS (no dedup) ? > > Are 16GB enough with an SSD L2ARC? > > 8gb for the arc, 8gb for gluster and OS. >That's what my systems run though each of my nodes only has @3TB of storage. Current tests among zfs used as VM storage seems to be that l2arc sits almost wholly unused though. I removed mine since it had such a very low hit rate.> _______________________________________________ > Gluster-users mailing list > Gluster-users at gluster.org > http://lists.gluster.org/mailman/listinfo/gluster-users >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.gluster.org/pipermail/gluster-users/attachments/20170223/158aef21/attachment.html>