[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] performance problems

On Fri, Feb 04, 2005 at 01:08:31PM -0000, Ian Pratt wrote:
> > yup. the only difference was that I didn't touch dumU's 
> > kernel config; in
> > dom0 I already disabled the debugging flags (except magic 
> > sysreq), but in
> > default domU's config they were still enabled.
> > 
> > Overall impression from my newer benchmark experiments:
> > 
> > - Harddisk IO is about 30% faster in XenU than in vmware ws 
> > (both accessing
> >   the same raw partition)
> > - Network IO is at the same level in xenU and vmware, which 
> > is about 30%
> >   slower than dom0/native net io (netpipe, 2 machines using 
> > 1000Mbit ethernet
> >   connected via a switch, xenU and vmware bridged).
> It's odd to see such a drop in network performance unless you're on a
> machine with a slow CPU. It should be possible to saturate a Gigabit
> Ethernet (900Mb/s) with a relatively modern CPU. What are you using?

its an athlon XP 2100+, so it isn't _so_ slow...

if someone wants to take a look at the netpipe-tcp results:

c u

This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting
Tool for open source databases. Create drag-&-drop reports. Save time
by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc.
Download a FREE copy at http://www.intelliview.com/go/osdn_nl
Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.