Re: Poor write- and overall performance

[Arne Kepp <ak@opengeo.org>]

Avi Kivity wrote:
> Arne Kepp wrote:
>> Hi,
>>
>> I'm testing KVM 80 (prepackaged from lfarkas.org) on CentOS 5.2 (both 
>> guest and host) and comparing against Xen 3.3.0. The only 
>> modification I've really made is that I've set noatime on both guest 
>> and host. The guest is running straight from an LVM volume and is 
>> assigned 4 Gb RAM and 4 virtual CPUs.
>
> I suggest trying scsi in kvm-81, or setting cache=writeback if you 
> want to keep using IDE (but be aware of the potential for severe data 
> loss with the latter option).
>

Thanks for the tip. I tested with the SCSI driver and 81, unfortunately 
write performance was approximately the same as before.

Keep up the good work,
-Arne

-- 
Arne Kepp
OpenGeo - http://opengeo.org
Expert service straight from the developers