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| author | Krutika Dhananjay <kdhananj@redhat.com> | 2017-09-07 18:48:34 +0530 |
|---|---|---|
| committer | jiffin tony Thottan <jthottan@redhat.com> | 2017-10-05 12:02:42 +0000 |
| commit | 761942e9fe8f6d7bbd5c56720e52dc4f6663cd9f (patch) | |
| tree | d942e7b89b5e4bbf07e30a61cf9639dcb78f2c0b /libglusterfs | |
| parent | 33d030d12ff46f900b3d75375fa36983036ec160 (diff) | |
mount/fuse: Make event-history feature configurable
... and disable it by default.
Backport of:
> Change-Id: Ia533788d309c78688a315dc8cd04d30fad9e9485
> Reviewed-on: https://review.gluster.org/18242
> BUG: 1467614
> cherry-picked from commit 956d43d6e89d40ee683547003b876f1f456f03b6
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: 1495397
Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
Diffstat (limited to 'libglusterfs')
| -rw-r--r-- | libglusterfs/src/glusterfs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libglusterfs/src/glusterfs.h b/libglusterfs/src/glusterfs.h index 8dcc4a367d0..18256aad8fc 100644 --- a/libglusterfs/src/glusterfs.h +++ b/libglusterfs/src/glusterfs.h @@ -421,6 +421,8 @@ struct _cmd_args { /* For the subdir mount */ char *subdir_mount; + + char *event_history; }; typedef struct _cmd_args cmd_args_t; |