[Gluster-users] Write performance on XenServer guest

[Shehjar Tikoo]

Shehjar Tikoo wrote:
> What gluster config are you using?


My bad.. I didnt read the mail completely. First thing you should try is 
run a streaming IO write perf test using dd or iozone. Lets see how that 
performs over the replicated config. Thanks



> 

> 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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>>
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