[PVE-User] Very slow server (RAW IDE discs and KVM)

Muhammad Yousuf Khan sirtcp at gmail.com
Thu Aug 11 08:40:07 CEST 2011

Sorry if i am messing the trail as i am no means expert just a newbie in
Proxmox.however i want to share my experience since i have been facing the
same issue perhaps this may lead you to the solution.

On Fri, Aug 5, 2011 at 4:10 PM, Erik van Ast <Erik.van.Ast at suzohapp.nl>wrote:

> Hi all,****
> ** **
> We have a PROXMOX 1.8 server running on a “4 x Intel(R) Core(TM)2 Quad CPU
> Q9650 @ 3.00GHz” CPU with 8GB RAM installed. At the moment 3 virtual servers
> are running on it (OpenSuse 11.2, Windows 2003 and Windows 2008) and one of
> my servers (Windows 2003, 2GB of RAM, 2 RAW IDE discs) is being extremely
> slow when writing data to it. We want to use this machine as file server, so
> we want to copy 180GB of data to it. The copying of data is almost finished
> now, but it took about 4 days to complete and we are on a 1Gbit connection
> internally so that shouldn’t make a difference. I saw that the machine is
> especially slow when copying large data over (like PST files), the speed
> than drops to 10-20Kbps instead of the multiple Mbps it should do.****
> At the moment 6.37 of the 8GB have been takes by the machines so RAM
> shouldn’t be a problem and total CPU is 50% now, so that should also be no
> problem.****
> When running task manager on the virtual server itself, nothing special is
> seen. No high CPU, no high RAM but the server is almost unresponsive. As
> soon as the server is finished copying, everything is back to normal speed
> ****
> ** **
> Has anyone ever seen this and does anyone know how to solve it?****
> Kind regards,
> Erik****
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