[ovs-dev] Agenda for IRC neeting for 8/13 (Nithin Raju)

Ben Pfaff blp at nicira.com
Thu Aug 21 16:10:39 UTC 2014

On Thu, Aug 21, 2014 at 03:08:59PM +0000, Samuel Ghinet wrote:
> I wanted to point out something about:
> "At a high level, the fraction of packets that make it to userspace should be very small. So it is not worth the optimization"
> If we have the port NORMAl (and perhaps, FLOOD) set, then the
> queuing of packets to userspace happens very often. And at startup,
> the queue (both in kernel and userspace) gets full quickly.
> This port NORMAL also causes kernel flows to be created, set,
> deleted and re-created, etc. During the time a kernel flow is
> deleted and a new one is created, packets that used to have matching
> flow now go to userspace.

I don't understand why use of NORMAL or FLOOD would increase the
number of packets to userspace.  Can you explain further?

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