[Bugs] [Bug 1467614] Gluster read/write performance improvements on NVMe backend
bugzilla at redhat.com
bugzilla at redhat.com
Sun Sep 24 06:22:12 UTC 2017
https://bugzilla.redhat.com/show_bug.cgi?id=1467614
--- Comment #30 from Worker Ant <bugzilla-bot at gluster.org> ---
COMMIT: https://review.gluster.org/18242 committed in master by Amar Tumballi
(amarts at redhat.com)
------
commit 956d43d6e89d40ee683547003b876f1f456f03b6
Author: Krutika Dhananjay <kdhananj at redhat.com>
Date: Thu Sep 7 18:48:34 2017 +0530
mount/fuse: Make event-history feature configurable
... and disable it by default.
This is because having it disabled seems to improve performance.
This could be due to the lock contention by the different epoll threads
on the circular buff lock in the fop cbks just before writing their
response
to /dev/fuse.
Just to provide some data - wrt ovirt-gluster hyperconverged
environment, I saw an increase in IOPs by 12K with event-history
disabled for randrom read workload.
Usage:
mount -t glusterfs -o event-history=on $HOSTNAME:$VOLNAME $MOUNTPOINT
OR
glusterfs --event-history=on --volfile-server=$HOSTNAME
--volfile-id=$VOLNAME $MOUNTPOINT
Change-Id: Ia533788d309c78688a315dc8cd04d30fad9e9485
BUG: 1467614
Signed-off-by: Krutika Dhananjay <kdhananj at redhat.com>
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