From 956d43d6e89d40ee683547003b876f1f456f03b6 Mon Sep 17 00:00:00 2001 From: Krutika Dhananjay Date: Thu, 7 Sep 2017 18:48:34 +0530 Subject: 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 $MOUNTPOINT Change-Id: Ia533788d309c78688a315dc8cd04d30fad9e9485 BUG: 1467614 Signed-off-by: Krutika Dhananjay --- xlators/mount/fuse/utils/mount.glusterfs.in | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'xlators/mount/fuse/utils') diff --git a/xlators/mount/fuse/utils/mount.glusterfs.in b/xlators/mount/fuse/utils/mount.glusterfs.in index ea7205b95e2..c6f2dda8e9a 100755 --- a/xlators/mount/fuse/utils/mount.glusterfs.in +++ b/xlators/mount/fuse/utils/mount.glusterfs.in @@ -217,6 +217,10 @@ start_glusterfs () cmd_line=$(echo "$cmd_line --use-readdirp=$use_readdirp"); fi + if [ -n "$event_history" ]; then + cmd_line=$(echo "$cmd_line --event-history=$event_history"); + fi + if [ -n "$volume_name" ]; then cmd_line=$(echo "$cmd_line --volume-name=$volume_name"); fi @@ -488,6 +492,9 @@ with_options() "use-readdirp") use_readdirp=$value ;; + "event-history") + event_history=$value + ;; "no-root-squash") if [ $value = "yes" ] || [ $value = "on" ] || -- cgit