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[Xen-devel] receive-side network hangs on domU

  • To: xen-devel@xxxxxxxxxxxxxxxxxxx
  • From: "ron minnich" <rminnich@xxxxxxxxx>
  • Date: Thu, 7 Dec 2006 14:18:16 -0700
  • Delivery-date: Thu, 07 Dec 2006 13:18:18 -0800
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  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

We're running Plan 9 in xen3.0.3, and it is working pretty well
(Thanks to all!). And boy, is it faster than Qemu. I am enjoying it,
esp. now that ACPI works on my laptop under dom0.

One thing I am seeing: at some point, usually caused if I run
vncviewer in Plan 9, I stop getting receive interrupts. It seems as
though a large amount of data pumps it way to Plan 9 in the form of
images, and we're not keeping up somehow.

I can still send packets, and I can get interrupts on that activity;
what I don't see is receive interrupts.

It's been (literally) 3 years since I debugged at this level, and I am
rusty; any hints about how to hunt this bug down and kill it are most
welcome. Or just hings on what we might have wrong in this port that
could cause this behaviour.

thanks again


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