Bug#799122: [Pkg-xen-devel] Bug#799122: xen-hypervisor-4.4-amd64: Networking of domUs stops working after a few minutes

[Ian Campbell <ijc@debian.org>]

On Thu, 2015-11-05 at 19:16 +0100, Arne Klein wrote:
> Thank you. The tested versions on dom0 and domU in which the problem 
> occurs are:
> 4.1.3-1~bpo8+1
> 3.16.7-ckt11-1+deb8u5

I've asked around upstream and it was suggested that "xen-netback:
require fewer guest Rx slots when not using GSO" which is in later
upstream might be relevant.

Please could you try 4.3~rc7-1~exp1 from experimental in dom0 and see
if that helps?

It was also suggested that the contents of /sys/kernel/debug/xen-
netback after the stall has occurred might contain useful information.

I forgot to ask earlier but are you able to trigger this on demand
and/or is there any commonality in the workloads running in the guests
which trigger this (i.e. particular network services which they run) or
their configurations (e..g manually disabling of offloads perhaps).

Ian.