Any performance report to share? Il 10 ott 2017 8:25 PM, "Dmitri Chebotarov" <4dim...@gmail.com> ha scritto:
> > I've had good results with using SSD as LVM cache for gluster bricks ( > http://man7.org/linux/man-pages/man7/lvmcache.7.html). I still use XFS on > bricks. > > > > On Tue, Oct 10, 2017 at 12:27 PM, Jeff Darcy <j...@pl.atyp.us> wrote: > >> On Tue, Oct 10, 2017, at 11:19 AM, Gandalf Corvotempesta wrote: >> > Anyone made some performance comparison between XFS and ZFS with ZIL >> > on SSD, in gluster environment ? >> > >> > I've tried to compare both on another SDS (LizardFS) and I haven't >> > seen any tangible performance improvement. >> > >> > Is gluster different ? >> >> Probably not. If there is, it would probably favor XFS. The developers >> at Red Hat use XFS almost exclusively. We at Facebook have a mix, but >> XFS is (I think) the most common. Whatever the developers use tends to >> become "the way local filesystems work" and code is written based on >> that profile, so even without intention that tends to get a bit of a >> boost. To the extent that ZFS makes different tradeoffs - e.g. using >> lots more memory, very different disk access patterns - it's probably >> going to have a bit more of an "impedance mismatch" with the choices >> Gluster itself has made. >> >> If you're interested in ways to benefit from a disk+SSD combo under XFS, >> it is possible to configure XFS with a separate journal device but I >> believe there were some bugs encountered when doing that. Richard >> Wareing's upcoming Dev Summit talk on Hybrid XFS might cover those, in >> addition to his own work on using an SSD in even more interesting ways. >> _______________________________________________ >> Gluster-users mailing list >> Gluster-users@gluster.org >> http://lists.gluster.org/mailman/listinfo/gluster-users >> > > > _______________________________________________ > Gluster-users mailing list > Gluster-users@gluster.org > http://lists.gluster.org/mailman/listinfo/gluster-users >
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