Gluster users - Jan 2011 - Write performance on XenServer guest

Hello,
    I have recently set up gluster-3.1.2 as NFS Virtual Disk Storage for
XenServer.
I have ran a windows vm on it and tested the disk performance:
Read: 100MB/s
Write: 10MB/s

While with standard NFS, on the same servers, we can achieve:
Read: 115MB/s
Write: 100MB/s

We have two servers with local scsi disks with gluster configured in
replicate mode.
Volume Options:

performance.cache-size 1GB

write-behind-window-size 512MB

performance.stat-prefech 1

Is there any specific option for this configuration? And, is it normal such
a poor write performance?


Thank you
Stefano Baronio

What gluster config are you using?

Stefano Baronio wrote:
> Hello,
>     I have recently set up gluster-3.1.2 as NFS Virtual Disk Storage for
> XenServer.
> I have ran a windows vm on it and tested the disk performance:
> Read: 100MB/s
> Write: 10MB/s
> 
> While with standard NFS, on the same servers, we can achieve:
> Read: 115MB/s
> Write: 100MB/s
> 
> We have two servers with local scsi disks with gluster configured in
> replicate mode.
> Volume Options:
> 
> performance.cache-size 1GB
> 
> write-behind-window-size 512MB
> 
> performance.stat-prefech 1
> 
> Is there any specific option for this configuration? And, is it normal such
> a poor write performance?
> 
> 
> Thank you
> Stefano Baronio
> 
> 
> 
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