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Re: [Xen-users] SLES10SP2 (xen 3.2.x) vs SLES11 (xen 3.4.x)

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Subject: Re: [Xen-users] SLES10SP2 (xen 3.2.x) vs SLES11 (xen 3.4.x)
From: James Pifer <jep@xxxxxxxxxxxxxxxx>
Date: Tue, 01 Dec 2009 15:36:30 -0500
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On Tue, 2009-12-01 at 19:08 +0200, Pasi Kärkkäinen wrote:
> On Tue, Dec 01, 2009 at 08:35:34AM -0500, James Pifer wrote:
> > I built a couple new servers on SLES11 because I needed to use USB.
> > Since SLES11 has xen 3.4 packages that seemed like the way to go. I'm
> > questioning the stability of the two new servers compared to my
> > SLES10SP2 servers. I'm also questioning the performance of Windows
> > domUs. 
> > 
> > On Thanksgiving day one of my SLES11 servers running 7-8 domUs crashed
> > and restarted three times. Being Thanksgiving day I did not spend a lot
> > of time on it and the quickest fix at the time was moving the domUs to
> > another server, which I did.
> >
> You should setup (and have) a serial console logging what's happening..
> then you could just check the serial console log for
> errors/tracebacks/crash information.
> That's the best way to track it down and get if fixed.
> > I've been running a memory test on that server since yesterday. So far
> > no errors. 
> > 
> > Since bringing up Windows domUs on SLES11 I've noticed they seem
> > slightly sluggish compared to the same domU on SLES10SP2. Is there a
> > test I can do to compare the performance?
> > 
> > Anyone else running SLES11 that has noticed any of these types of
> > issues?
> > 
> Are you using GPLPV drivers in the Windows guest? Or Novell's Windows PV
> drivers?
> -- Pasi

Thanks for the response. I had to change one of these servers back to
sles10sp2 as we were trying to use one of the domUs and it kept
crashing. The end of the log for the domU gives:

platform_fixed_ioport: changed ro/rw state of ROM memory area. now is rw state.
platform_fixed_ioport: changed ro/rw state of ROM memory area. now is ro state.
xc_map_foreign_batch: mmap failed: Cannot allocate memory
xc_map_foreign_batch error 12

Not sure what this means. The host server has 32 gb of RAM and there
were only half a dozen domUs running, with only about 5gb of ram

It's now running on sles10sp2 dom0 without a problem. I guess it will be
a while before we go with sles11. 


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