I've added an ssd to a zpool to be used as zil and l2arc cache. (One partition for each service) Seems to be unused. I've tried with arcstat.sh script and i don't see any increasing usage for the cache How can i debug the zil/arc cache usage? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://www.gluster.org/pipermail/gluster-users/attachments/20161030/96662cda/attachment.html>
On 30/10/2016 11:24 PM, Gandalf Corvotempesta wrote:> > I've added an ssd to a zpool to be used as zil and l2arc cache. (One > partition for each service) > > Seems to be unused. I've tried with arcstat.sh script and i don't see > any increasing usage for the cache > > How can i debug the zil/arc cache usage? >This is for VM Hosting? pretty normal. I've run l2arc for weeks with VM's on ZFS or gluster/zfs and only seen 4%-6% hit ratios. Between KVM caching and the zil, l2arc never gets a chance to shine. -- Lindsay Mathieson
On Sun, Oct 30, 2016 at 8:24 AM, Gandalf Corvotempesta < gandalf.corvotempesta at gmail.com> wrote:> I've added an ssd to a zpool to be used as zil and l2arc cache. (One > partition for each service) > > Seems to be unused. I've tried with arcstat.sh script and i don't see any > increasing usage for the cache > > How can i debug the zil/arc cache usage? >Is it not showing as filling up or not showing any hit's to it? If you use `zpool iostat -v` does it show any data going to l2arc/cache or any small usage on the zil/log?> _______________________________________________ > Gluster-users mailing list > Gluster-users at gluster.org > http://www.gluster.org/mailman/listinfo/gluster-users >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://www.gluster.org/pipermail/gluster-users/attachments/20161030/e46c2445/attachment.html>