06c4ba5891
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>
7 lines
97 B
Plaintext
7 lines
97 B
Plaintext
quick-read=off
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read-ahead=off
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io-cache=off
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stat-prefetch=off
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eager-lock=enable
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remote-dio=enable
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