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Re: [Xen-devel] Network stops responding after some time

On 24 Jul 2006, at 19:49, Adnan Khaleel wrote:

I need help in trying to understand why the ethernet driver has locked up and how I can go about outputting debug messages. I see in /proc/interrrupts that the interrupt count of eth0 just stops incrementing. I've tried different (3Com, Realtek 8169, Realtek 8139) based network cards and this happens with all. I'm not sure what is so unique about my system that might be causing this to lockup, its a regular Nforce3 based system with 512MB ram. This problem does not happen if I'm not using a Xen enabled kernel. This is entirely happening in dom0 and there aren't any user domains so its not a bridging issue. I've also disabled the Xen backend drivers (netbk.ko and netloop.ko) so its talking to the network chip directly.

Any help? Please?

Firstly, you need to repro on the kernel from our xen-unstable repository, which is based on kernel.org Linux 2.6.16. Then build the same kernel for native i386 and get boot output. Send the unified diff (diff -u) of the two boot outputs. You may need to tweak the configuration of the native build to get the output similar to that of the Xen-based kernel -- we can tell you how to do that when we see your initial diff.

Another thing worth trying is 'ioapic_ack=old' as a Xen boot parameter in your bootloader configuration file. It probably won't help, but worth a try.

 -- Keir

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