----- Original Message ----- > From: hmlth@xxxxxxxxxx > To: abauer@xxxxxxxxx > Cc: gluster-users@xxxxxxxxxxx > Sent: Monday, September 28, 2015 7:40:52 AM > Subject: Re: Tuning for small files > > I'm also quite interested by small files performances optimization, but > I'm a bit confused about the best option between 3.6/3.7. > > Ben Turner was saying that 3.6 might give the best performances: > http://www.gluster.org/pipermail/gluster-users/2015-September/023733.html > > What kind of gain is expected (with consistent-metadata) if this > regression is solved? Just to be clear, the issue I am talking about is metadata only(think ls -l or file browsing). It doesn't affect small file perf(well not that much, I'm sure a little, but I have never quantified it), with server and client event threads set to 4 + lookup optimize I see between a 200-300% gain on my systems on 3.7 vs 3.6 builds. If I needed fast metadata I would go with 3.6, if I need fast smallfile I would go with 3.7. If I needed both I would pick the less of the two evils and go with that one and upgrade when the fix is released. -b > > I tried 3.6.5 (last version for debian jessie), and it's a bit better > than 3.7.4 but not by much (10-15%). > > I was also wondering if there is recommendations for the underlying file > system of the bricks (xfs, ext4, tuning...). > > > Regards > > Thomas HAMEL > > On 2015-09-28 12:04, André Bauer wrote: > > If you're not already on Glusterfs 3.7.x i would recommend an update > > first. > > > > Am 25.09.2015 um 17:49 schrieb Thibault Godouet: > >> Hi, > >> > >> There are quite a few tuning parameters for Gluster (as seen in > >> Gluster > >> volume XYZ get all), but I didn't find much documentation on those. > >> Some people do seem to set at least some of them, so the knowledge > >> must > >> be somewhere... > >> > >> Is there a good source of information to understand what they mean, > >> and > >> recommendation on how to set them to get a good small file > >> performance? > >> > >> Basically what I'm trying to optimize is for svn operations (e.g. svn > >> checkout, or svn branch) on a replicated 2 x 1 volume (hosted on 2 > >> VMs, > >> 16GB ram, 4 cores each, 10Gb/s network tested at full speed), using a > >> NFS mount which appears much faster than fuse in this case (but still > >> much slower than when served by a normal NFS server). > >> Any recommendation for such a setup? > >> > >> Thanks, > >> Thibault. > >> > >> > >> > >> _______________________________________________ > >> Gluster-users mailing list > >> Gluster-users@xxxxxxxxxxx > >> http://www.gluster.org/mailman/listinfo/gluster-users > >> > > > > > > -- > > Mit freundlichen Grüßen > > André Bauer > > > > MAGIX Software GmbH > > André Bauer > > Administrator > > August-Bebel-Straße 48 > > 01219 Dresden > > GERMANY > > > > tel.: 0351 41884875 > > e-mail: abauer@xxxxxxxxx > > abauer@xxxxxxxxx <mailto:Email> > > www.magix.com <http://www.magix.com/> > > > > > > Geschäftsführer | Managing Directors: Dr. Arnd Schröder, Michael Keith > > Amtsgericht | Commercial Register: Berlin Charlottenburg, HRB 127205 > > > > Find us on: > > > > <http://www.facebook.com/MAGIX> <http://www.twitter.com/magix_de> > > <http://www.youtube.com/wwwmagixcom> <http://www.magixmagazin.de> > > ---------------------------------------------------------------------- > > The information in this email is intended only for the addressee named > > above. Access to this email by anyone else is unauthorized. If you are > > not the intended recipient of this message any disclosure, copying, > > distribution or any action taken in reliance on it is prohibited and > > may be unlawful. MAGIX does not warrant that any attachments are free > > from viruses or other defects and accepts no liability for any losses > > resulting from infected email transmissions. Please note that any > > views expressed in this email may be those of the originator and do> > Gluster-users mailing list > > Gluster-users@xxxxxxxxxxx > > http://www.gluster.org/mailman/listinfo/gluster-users > > _______________________________________________ > Gluster-users mailing list > Gluster-users@xxxxxxxxxxx > http://www.gluster.org/mailman/listinfo/gluster-users _______________________________________________ Gluster-users mailing list Gluster-users@xxxxxxxxxxx http://www.gluster.org/mailman/listinfo/gluster-users
