On Thu, Jun 21, 2018 at 8:32 AM, Raghavendra Gowdappa <[email protected]> wrote:
> For the case of reading from Glusterfs mount, read-ahead should help. > However, we've known issues with read-ahead[1][2]. To work around these, > can you try with, > > 1. Turn off performance.open-behind > #gluster volume set <volname> performance.open-behind off > > 2. enable group meta metadata-cache > # gluster volume set <volname> group metadata-cache > [1] https://bugzilla.redhat.com/show_bug.cgi?id=1084508 [2] https://bugzilla.redhat.com/show_bug.cgi?id=1214489 > > > On Thu, Jun 21, 2018 at 5:00 AM, Pat Haley <[email protected]> wrote: > >> >> Hi, >> >> We were recently revisiting our problems with the slowness of gluster >> writes (http://lists.gluster.org/pipermail/gluster-users/2017-April >> /030529.html). Specifically we were testing the suggestions in a recent >> post (http://lists.gluster.org/pipermail/gluster-users/2018-March >> /033699.html). The first two suggestions (specifying a negative-timeout >> in the mount settings or adding rpc-auth-allow-insecure to glusterd.vol) >> did not improve our performance, while setting "disperse.eager-lock off" >> provided a tiny (5%) speed-up. >> >> Some of the various tests we have tried earlier can be seen in the links >> below. Do any of the above observations suggest what we could try next to >> either improve the speed or debug the issue? Thanks >> >> http://lists.gluster.org/pipermail/gluster-users/2017-June/031565.html >> http://lists.gluster.org/pipermail/gluster-users/2017-May/030937.html >> >> Pat >> >> -- >> >> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- >> Pat Haley Email: [email protected] >> Center for Ocean Engineering Phone: (617) 253-6824 >> Dept. of Mechanical Engineering Fax: (617) 253-8125 >> MIT, Room 5-213 http://web.mit.edu/phaley/www/ >> 77 Massachusetts Avenue >> Cambridge, MA 02139-4301 >> >> _______________________________________________ >> Gluster-users mailing list >> [email protected] >> http://lists.gluster.org/mailman/listinfo/gluster-users > > >
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