glusterfs.git/extras/group-virt.example, branch v3.4.1 group-virt: Change profile to include remote-dio and exclude posix-aio. 2013-02-05T01:42:05+00:00 Vijay Bellur vbellur@redhat.com 2013-02-04T04:47:01+00:00 06c4ba589102bf92c58cd9fba5c60064bc7a504e remote-dio enables filtering O_DIRECT in the client xlator. This has been found to be useful for improving performance when there are multiple VMs talking to an image store. Aggregated throughput results for a single thread iozone run from multiple VMs and a single host can be seen below: ------------------------------------------------- No. of VMs | remote-dio on | remote-dio off | ------------------------------------------------- 2 | 400 MB/s | 202 MB/s | 4 | 650 MB/s | 410 MB/s | -------------------------------------------------- posix-aio has not been found to improve performance consistently with VM image workload. Hence not including that in the default virt profile. Change-Id: I592f68b95a955036f1a985352d2f4950ced1deef BUG: 907301 Signed-off-by: Vijay Bellur <vbellur@redhat.com> Reviewed-on: http://review.gluster.org/4460 Reviewed-by: Anand Avati <avati@redhat.com> Tested-by: Anand Avati <avati@redhat.com> 
remote-dio enables filtering O_DIRECT in the client xlator. This has been
found to be useful for improving performance when there are multiple VMs
talking to an image store.

Aggregated throughput results for a single thread iozone run from multiple VMs
and a single host can be seen below:

-------------------------------------------------
No. of VMs |   remote-dio on  |   remote-dio off |
-------------------------------------------------
       2   |     400 MB/s     |    202 MB/s      |
       4   |     650 MB/s     |    410 MB/s      |
--------------------------------------------------

posix-aio has not been found to improve performance consistently with VM image
workload. Hence not including that in the default virt profile.

Change-Id: I592f68b95a955036f1a985352d2f4950ced1deef
BUG: 907301
Signed-off-by: Vijay Bellur <vbellur@redhat.com>
Reviewed-on: http://review.gluster.org/4460
Reviewed-by: Anand Avati <avati@redhat.com>
Tested-by: Anand Avati <avati@redhat.com>
Added virt group file - template for 'group' set 2012-12-12T00:42:14+00:00 Krishnan Parthasarathi kparthas@redhat.com 2012-11-26T06:51:23+00:00 5ec55a34c99c7b458f8be013863967c631be6730 - This sample file contains the set of volume options that are associated with volumes that would be used to store VMs. - To enable the set of options present in this file one must do the following, - # cp extras/group-virt.example /var/lib/glusterd/groups/<group-name> # gluster volume set <volume-name> group <group-name> Change-Id: I8848d3d222ce114900db885aeef2f20c83ece28c BUG: 851237 Signed-off-by: Krishnan Parthasarathi <kparthas@redhat.com> Reviewed-on: http://review.gluster.org/4232 Reviewed-by: Anand Avati <avati@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> 
- This sample file contains the set of volume options
  that are associated with volumes that would be used to
  store VMs.

- To enable the set of options present in this file one must
  do the following,
  - # cp extras/group-virt.example /var/lib/glusterd/groups/<group-name>
    # gluster volume set <volume-name> group <group-name>

Change-Id: I8848d3d222ce114900db885aeef2f20c83ece28c
BUG: 851237
Signed-off-by: Krishnan Parthasarathi <kparthas@redhat.com>
Reviewed-on: http://review.gluster.org/4232
Reviewed-by: Anand Avati <avati@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>