On Thu, Jun 21, 2018 at 8:32 AM, Raghavendra Gowdappa <rgowdapp@xxxxxxxxxx> wrote:
#gluster volume set <volname> performance.open-behind offFor 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-behind2. enable group meta metadata-cache
# gluster volume set <volname> group metadata-cache
On Thu, Jun 21, 2018 at 5:00 AM, Pat Haley <phaley@xxxxxxx> wrote:
Hi,
We were recently revisiting our problems with the slowness of gluster writes (http://lists.gluster.org/pipermail/gluster-users/2017-April ). Specifically we were testing the suggestions in a recent post (http://lists.gluster.org/pipe/030529.html rmail/gluster-users/2018-March ). 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./033699.html
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/0 31565.html
http://lists.gluster.org/pipermail/gluster-users/2017-May/03 0937.html
Pat
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Pat Haley Email: phaley@xxxxxxx
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/
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