Just a not, we have seen a pretty significant increase in speed from this latest 2.03 release. Doing a test read over afr we are seeing speeds between 200-320 mB a second. (over infiniband, ib-verbs) This is with direct IO disabled too. Oddly putting performance translators on the clients made no difference. We cued up 10 servers to read a single file simultaneously and got about ~30-50 mB a sec from each client, totaling up to ~400 mB a sec on a single file (read from 2 servers, by 10 servers). We are really happy with these numbers for a virtual cluster so, most single drives won't read at those speeds. Thanks! -Mic Hiren Joshi wrote: > > > >> -----Original Message----- >> From: Stephan von Krawczynski [mailto:skraw at ithnet.com] >> Sent: 09 July 2009 13:50 >> To: Hiren Joshi >> Cc: Liam Slusser; gluster-users at gluster.org >> Subject: Re: GlusterFS Preformance >> >> On Thu, 9 Jul 2009 09:33:59 +0100 >> "Hiren Joshi" <josh at moonfruit.com> wrote: >> >> >>> >>> >>> >>>> -----Original Message----- >>>> From: Stephan von Krawczynski [mailto:skraw at ithnet.com] >>>> Sent: 09 July 2009 09:08 >>>> To: Liam Slusser >>>> Cc: Hiren Joshi; gluster-users at gluster.org >>>> Subject: Re: GlusterFS Preformance >>>> >>>> On Wed, 8 Jul 2009 10:05:58 -0700 >>>> Liam Slusser <lslusser at gmail.com> wrote: >>>> >>>> >>>>> You have to remember that when you are writing with NFS >>>>> >>>> you're writing to >>>> >>>>> one node, where as your gluster setup below is copying the >>>>> >>>> same data to two >>>> >>>>> nodes; so you're doubling the bandwidth. Dont expect nfs >>>>> >>>> like performance >>>> >>>>> on writing with multiple storage bricks. However read >>>>> >>>> performance should be >>>> >>>>> quite good. >>>>> liam >>>>> >>>> Do you think this problem can be solved by using 2 storage >>>> bricks on two >>>> different network cards on the client? >>>> >>> I'd be surprised if the bottleneck here was the network. >>> >> I'm testing on >> >>> a xen network but I've only been given one eth per slice. >>> >> Do you mean your clients and servers are virtual XEN >> installations (on the >> same physical box) ? >> > > They are on different boxes and using different disks (don't ask), this > seemed like a good way to evaluate as I setup an NFS server using the > same equipment to get relative timings. The plan is to roll it out onto > new physical boxes in a month or 2.... > > > >> Regards, >> Stephan >> >> >> > > _______________________________________________ > Gluster-users mailing list > Gluster-users at gluster.org > http://zresearch.com/cgi-bin/mailman/listinfo/gluster-users > --
