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Re: [Xen-users] Xen Novell rpm does not start Dom0 on my openSuse 10.2

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Subject: Re: [Xen-users] Xen Novell rpm does not start Dom0 on my openSuse 10.2
From: Mark Williamson <mark.williamson@xxxxxxxxxxxx>
Date: Thu, 25 Oct 2007 18:26:34 +0100
Cc: Roman Kellner <muzungu@xxxxxxx>
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> I have serveral questions concering xen.
> I installed the Novell xen-3.1.0-1.i686.rpm
> <http://bits.xensource.com/oss-xen/release/3.1.0/kernel-3.1-opensuse10x/RPM
>S/i686/xen-3.1.0-1.i686.rpm> and kernel-xen-2.6.18-3.1.0.i686.rpm
> <http://bits.xensource.com/oss-xen/release/3.1.0/kernel-3.1-opensuse10x/RPM
>S/i686/kernel-xen-2.6.18-3.1.0.i686.rpm> on my openSuse 10.2 System and
> tried to start. What I got was a
> "Mismatch between Xen and Dom0 Kernel" panic (See pict).
> What did I do wrong or do the rpm files not really work/match?

Looks like the RPMs don't match.  Where did you get those links from?  I'm not 
sure who's responsible for those RPMS but it'd be nice if we could let them 
know if there's a build mismatch!

> Hence I installed the sources and compiled them all (?). After also
> compiling the hmvloader with the dev86 package and installing it all, I
> was able to start Dom0 (seem to work fine so far) and to start DomU in
> order to install a native WinXP from the CD-Rom. The Dom0 Window pops up
> for some seconds and disappears again, not long enough to read anything
> (according to the log due to poweroff; who did poweroff?).
> I something  must still be wrong, but what? Appreciate any help/idea!

If you post your config file, we could take a look.  Sounds like you're 
getting there, anyhow.

> And last but not least. One of the reasons why am doing all this,
> besides of getting to know xen, is that a have a windows slideshow
> program running on VMWare with a very poor video performance (flickering
> picts instead of alphablending, messy timing). My hope was, that with
> xen and Pacifica I could get near native performance.
> Does anyone have experience with xen/Pacifica and video perfomance? Does
> it get near to native WindowsXP?

I don't know if OSS Xen has significantly better full virtualisation 
performance compared to VMware.  Xen's largest advantages come when it's able 
to run a paravirtualised guest.  Also, the performance of the CPU 
virtualisation is miles ahead of the display virtualisation performance, so 
the virtual framebuffer tends not to be blisteringly fast.

Have you tried using the VMware tools within the guest to improve performance?  
Alternatively, if you have access to it (e.g. WinXP Pro) you could use the 
Windows remote desktop protocol to forward the display over the virtual 
network.  I understand that RDP is quite snappy, so you might find that's a 
good solution - with the added bonus of being network transparent.


Dave: Just a question. What use is a unicyle with no seat?  And no pedals!
Mark: To answer a question with a question: What use is a skateboard?
Dave: Skateboards have wheels.
Mark: My wheel has a wheel!

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