Re: [Xen-users] major slow down with xen implementation

["Todd Deshane" <deshantm@xxxxxxxxx>]

On Thu, Sep 25, 2008 at 11:22 AM, Geoffrey <lists@xxxxxxxxxxxxxxxxxxxxx> wrote:
> We have some fairly robust hardware we are trying to set up a number of
> para-virtual servers in a clustered environment and we are seeing huge cpu
> issues.  Specs:
>
> Dell 1950: 8 1u servers
> cpu MHz : 2660.038
> dual quad cores
> 32G memory each
>
> Our first virual server was configured to use 8G and 4 cores.
>
> I tried running a quick test by compiling our application, simply running
> 'time make.'  The results were terrible:
>
> real    0m56.79s
> user    0m26.53s
> sys     0m35.46s
>
> In comparison, my laptop (Intel Core2 Duo CPU @ 2.50GHz, 2G mem):
>
> real    0m42.99s
> user    0m29.85s
> sys     0m6.47s
>
> We then reconfigured the virtual server to use a single core and the results
> were almost identical to the 4 core test.
>
> Any insights as to what our problem might be would be greatly appreciated.
>

Try using kernbench for testing.

Also, what version of xen, guest kernel etc.?

Those can really make a big difference.

Cheers,
Todd

-- 
Todd Deshane
http://todddeshane.net
check out our book: http://runningxen.com

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users