[Gluster-devel] Small File Performance - Strange results
joe at julianfamily.org
Tue Aug 4 21:34:49 UTC 2015
3.2.7 is far beyond its supported lifetime. Please upgrade. The official
PPAs can be found at https://launchpad.net/~gluster
On 08/04/2015 09:55 AM, Hafeez Bana wrote:
> We've been evaluating glusterfs 3.2.7 on ubuntu 14.04 LTS. All tests
> were run with event-thread matching cpu-cores and lookup-unhashed
> turned off
> We noted a couple of issues and some interesting results which might
> be of benefit to the developers
> - bare metal machine with SSD running ZFS - 2 LXC container running
> glusterd and another running a samba instance which is serving a share
> backed by a fuse mounted volume.
> 1 ) the fuse mounted volume has to be done in the host and LXC run on
> top of it. If you try to fuse mount within in LXC - posix acls group
> persmissions are not respected completed by gluster
> 2) small file performance - tests were run unzipping from a windows
> box a 45M and 150M (expanded size - contains 8000 files) archive. 45M
> performance is reasonable. 150M tests takes 10 times as long(about 18
> minutes) as the same samba instance serving of a straight zfs filesystem
> 3) As a whim we logged into the container containing the samba
> instance and copied files from the ZFS folder to the folder under
> gluster. 14seconds for the same transfer of 8000 files!!
> We don't know if there is a mismatch in the config of samba that is
> causing issues with gluster. Any ideas? And also is the issue with
> posix acls groups being broken if you fuse_mount a gluster volume
> within LXC known?
> Finally, are there any gluster developers in the UK - we would love to
> talk to them.
> Gluster-devel mailing list
> Gluster-devel at gluster.org
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