On 25/11/16 22:16, Ben Pfaff wrote:
>> Is there perhaps a way to avoid this issue altogether?
>
> I think that serial logging from a softirq, which is where OVS handles
> packets, is always going to happen synchronously, which means that it's
> going to be as slow as the serial connection. Here's an example of a
> similar issue:
> https://access.redhat.com/solutions/658783
>
> Maybe someone else has a good idea, though; I'm no expert here.
>
Thanks for the link, I think that may have hit us before...
Anyway, it seems you can sidestep the issue by configuring printk to be
less verbose. Setting kernel.printk to eg. "4 5 1 4" stops the messages
from appearing in the serial console and avoids the problem.
--
Jarkko
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