[PVE-User] I/O issues

Shain Miley smiley at npr.org
Tue Jun 23 19:04:03 CEST 2009


Just wondering which of the stats from the pveperf command I should 
place the most weight on when comparing different Proxmox systems.  I am 
trying to determine which of my systems would have the fastest I/O 
throughput.

Thanks,

Shain

Shain Miley wrote:
> After looking around it seems that this LSI Raid card does not have 
> the ability to use write cache.  This had nothing to do with proxmox.  
> I am going to replace the card with a  Perc one that I am sure will 
> resolve the issue.
>
> Thanks,
>
> Shain
>
> Dietmar Maurer wrote:
>>> Also here is the output from 'pveperf':
>>>
>>> proxmox5:/usr/local# pveperf
>>> CPU BOGOMIPS:      42564.52
>>> REGEX/SECOND:      649026
>>> HD SIZE:           68.41 GB (/dev/pve/root)
>>> BUFFERED READS:    61.31 MB/sec
>>> AVERAGE SEEK TIME: 32.08 ms
>>> FSYNCS/SECOND:     94.04
>>>     
>>
>> That is simply much too slow - good value would be 2000 FSYNCS/SECOND.
>>
>> Most likely there is something wrong with the cache settings.
>>
>> - Dietmar
>>
>>
>>   
>
>




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