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

To: "Geoffrey" <lists@xxxxxxxxxxxxxxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-users] major slow down with xen implementation
From: "Ross S. W. Walker" <RWalker@xxxxxxxxxxxxx>
Date: Thu, 25 Sep 2008 12:24:00 -0400
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Thread-topic: [Xen-users] major slow down with xen implementation
Geoffrey wrote:
> Todd Deshane wrote:
> > On Thu, Sep 25, 2008 at 11:57 AM, Geoffrey <lists@xxxxxxxxxxxxxxxxxxxxx> 
> > wrote:
> >> Is this a reasonable expectation with virtualization?
> > 
> > This doesn't seem quite right to me, try kernbench and
> > also make sure the versions of xen and guest kernels
> > are the same on the server and laptop for a good
> > comparision.
> I'm not running xen on the laptop.  Laptop is RHEL 5.2,
> kernel: 2.6.18-92.1.10.el5
> > The overhead of Xen PV should be pretty low vs native.
> I was wrong when I said we were para-virtualizing, this is full 
> virtualization.

Well, why not put up the xen config for the domU and see if
anybody can suggest some tweaks, but if you are using RH + Xen
it would be silly NOT to para-virtualize it.


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