[Fedora-xen] RE: [Xen-users] memory issues with FC5.2200 kernels
Petersson, Mats
Mats.Petersson at amd.com
Tue Nov 7 13:42:31 UTC 2006
> -----Original Message-----
> From: xen-users-bounces at lists.xensource.com
> [mailto:xen-users-bounces at lists.xensource.com] On Behalf Of
> Adrian Chadd
> Sent: 07 November 2006 13:37
> To: fedora-xen at redhat.com
> Cc: xen-users at lists.xensource.com
> Subject: [Xen-users] memory issues with FC5.2200 kernels
>
> hiya,
>
> I've just upgraded a production Xen to FC5.2200 + the Xen userspace
> stuff and its exhibiting some nasty problems. A couple of hours uptime
> is followed by all domU networking stopping.
>
> Here's dmesg in dom0:
>
> xen_net: Memory squeeze in netback driver.
> printk: 4 messages suppressed.
> xen_net: Memory squeeze in netback driver.
> printk: 4 messages suppressed.
>
> And xm dmesg:
>
> (XEN) (file=memory.c, line=66) Could not allocate order=0
> extent: id=0 memflags=0 (0 of 63)
> (XEN) (file=memory.c, line=66) Could not allocate order=0
> extent: id=0 memflags=0 (0 of 63)
> (XEN) (file=memory.c, line=66) Could not allocate order=0
> extent: id=0 memflags=0 (0 of 63)
> (XEN) (file=memory.c, line=66) Could not allocate order=0
> extent: id=0 memflags=0 (0 of 63)
> (XEN) (file=memory.c, line=66) Could not allocate order=0
> extent: id=0 memflags=0 (0 of 63)
It is trying to allocate one page in "increase_reservation", and
failing...
I don't know WHY this is failing (I suspect the heap may have a memory
leak, perhaps)?
What is your DomU doing when you see this problem?
--
Mats
>
> Googling has shown inconclusive results - a couple of
> possible fixes but no explanation
> why (and no consistent fix.)
>
> Any ideas?
>
> Thanks,
>
>
> Adrian
>
>
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