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xen-users
Re: [Xen-devel] kernel oops/IRQ exception when networking between many d
On 6 Jun 2005, at 09:52, Birger Tödtmann wrote:
I commented out the free_mfn() and status= lines: the kernel now
reports
the following after it configured the 10th domU and ~80th vif, with
approx. 20-25 bridges up. Just an idea: the number of vifs + bridges
is
somewhere around the magic 128 (NR_IRQS problem in 2.0.x!) when the
crash happens - could this hint to something?
The crashes you see with free_mfn removed will be impossible to debug
-- things are very screwed by that point. Even the crash within
free_mfn might be far removed from the cause of the crash, if it's due
to memory corruption.
It's perhaps worth investigating what critical limit you might be
hitting, and what resource it is that's limited. e.g., can you can
create a few vifs, but connected together by some very large number of
bridges (daisy chained together)? Or can you create a large number of
vifs if they are connected together by just one bridge?
This kind of thing will give us an idea of where the bug might be
lurking.
-- Keir
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