Re: [Xen-devel] More on networking hang

[Rob Gardner <rob.gardner@xxxxxx>]

Ian Pratt wrote:
> Just to check I understand your setup: You have a domain 0
> implementing bridging, then a domain 1 and a domain 2 each
> running apache.
That's correct.

> When the domain chokes, do you you see any drops or errors in the
> stats as reported by ifconfig?
In domain 0, ifconfig reports 0 errors, 0 dropped on eth0; 0 errors, 2 
dropped on vif1.0, and 0 errors, 5 dropped on vif2.0; 0 errors, 0 
dropped on xen-br0.
In domain 1, ifconfig reports 0 for errors and dropped.

For some reason I can't get a console onto the other domain right now, 
but I suspect it will report the same thing as domain 1.
> It would be good to enable the debugging printf's in both the
> netfront and netback drivers.
Can do.


> Can you repeat this with a single non-0 domain? Can you repeat it more
> easily by generating a background network load in dom0?
Can try these.


> BTW: Have you got CONNECTION_TRACKING compiled into the dom0
> kernel?  This seems to cripple Linux performance, hence it was
> recently made a module in our config.
We are using only default options.



Rob Gardner
HP




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