[ovs-discuss] kernel panic under heavy receive load

Chris Dunlop chris at onthe.net.au
Sat Feb 28 01:59:17 UTC 2015


On Fri, Feb 27, 2015 at 08:33:13PM -0500, Xu (Simon) Chen wrote:
> On Fri, Feb 27, 2015 at 7:13 PM, Chris Dunlop <chris at onthe.net.au> wrote:
> > On Fri, Feb 27, 2015 at 11:08:21AM -0800, Pravin Shelar wrote:
> > > Can you reproduce this bug on hypervisor to hypervisor
> > > test without any VMs?
> >
> > The thought just struck me: my two crashes were when all my
> > VMs were on the one hypervisor, i.e. there was no OVS
> > traffic between the hypervisors.
> 
> VM to VM on the same hypervisor still goes through OVS, just
> not via cross-machine VXLAN tunnels. In this case, vhost is
> more suspicious...

Yes, it takes the tunnel out of the picture.

Another data point: the vast bulk (probably >99%) of my VM
traffic is VM<=>not-VM.



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