Re: Linux 2.6 guest BUG(). (was: Re: [Xen-devel] Re: [Xen-changelog] Fix VCPU locking in sched_adjdom for multi-VCPU guests)

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 1 Feb 2006, at 16:08, Matt Ayres wrote:

> I can provide dozens of BUG()'s if required.  It just happened again 
> on a host in dom0 to the sshd daemon and now that port is locked 
> (netstat -nlp reports "-" as the process name).  I am able to access 
> the server via the console.
> I assume you mean Xen's memory usage. I am showing 141MB free out of 
> 8112MB total.  Our scripts to add accounts don't allow adding more 
> accounts then there is memory for, we actually leave about 128MB as a 
> buffer.
That's a bit odd then. If you don't explicitly specify dom0's memory 
allocation at boot time then you should end up with 128MB 'slack' left 
unallocated. And that should all be <4GB.
If you are giving dom0 all of memory on boot, and then reducing it 
later, that could be a problem (dom0 may end up giving back only memory 
>4GB).
 -- Keir


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