Re: FW: [Xen-users] Problem with Dell Poweredge 1850

[David H <davidh.davidh@xxxxxxxxx>]

It will make your shiny new dual proc hyperthreaded system look like a
single CPU non-ht machine to xen.  Other than that it's no problem. :)

>From the user manual:
ignorebiostables
    Disable parsing of BIOS-supplied tables. This may help with some
chipsets that aren't fully supported by Xen. If you specify this
option then ACPI tables are also ignored, and SMP support is disabled.

I am having more luck compiling from the latest unstable tarball.  I
will let you know how my testing goes.

David

On 5/10/05, Rob See <rob@xxxxxxxx> wrote:
> All,
> 
>         This seems to have fixed the problem. I didn't get the usual lockup
> running either command that guaranteed me a hang in the past. Are there
> any side effects to the ignorebiostables option that I need to be aware
> of. Will there be a proper patch to address this issue ?
> 
> Thanks,
> -Rob
> 
> David Harms wrote:
> > I think I may be seeing the same problem on a set of supermicro server
> > based on the same Intel E7520 "Lindenhurst" chipset as the 1850.  I
> > can run xen-2.0.3 from the Jan 24th tarball using kernel 2.6.10 on
> > these systems without any problem but if I use the latest 2.0.5,
> > testing or unstable tarballs with 2.6.11 the server hangs under IO
> > load.  It often happens when I tar/untar, cp, or mkfs.
> >
> > booting xen with "ignorebiostables" seems to solve the problem.
> >
> > I am running Redhat EL 3 & 4.
> >
> > I don't know if it's relevant but it looks like there was a patch
> > added in 2.6.10/2.6.11 specifically for this chipset. "Disable SW
> > irqbalance/irqaffinity for E7520/E7320/E7525"
> >
> >  David
> >
> >
> >>>-----Original Message-----
> >>>From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
> >>>[mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of michal
> >>>urbanski
> >>>Sent: Monday, May 09, 2005 2:50 PM
> >>>To: xen-users@xxxxxxxxxxxxxxxxxxx
> >>>Subject: Re: [Xen-users] Problem with Dell Poweredge 1850
> >>>
> >>>On Sun, May 08, 2005 at 06:43:59PM +0200, Arie Kraai wrote:
> >>>
> >>>>On Sun, May 08, 2005 at 10:15:45AM -0400, Rob See wrote:
> >>>>
> >>>>>Any time the system is placed under high IO ( for example
> >>>
> >>>untar/bz2ing a
> >>>
> >>>>>tarball to create the fs for a xenU partiton) the machine hangs.
> >>>>
> >>>>Is this problem really xen-related; can you do the same actions booted
> >>>>from a "native" kernel without a crash?
> >>>>It looks like a memory or heating problem...
> >>>
> >>>I can state for certain that it is a xen problem. I've shelved the xen
> >>>stuff on our 2850 for the past few months, and the machine has been
> >>>running non-stop since then on a non-xen kernel.
> >>>
> >>>Just a data-point for you, fyi :)
> >>>
> >>>-michal
> >>>
> >>>_______________________________________________
> >>>Xen-users mailing list
> >>>Xen-users@xxxxxxxxxxxxxxxxxxx
> >>>http://lists.xensource.com/xen-users
> >>>
> >>
> >
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-users
> 
>

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