[ovs-dev] [PATCH 00/11] RFC: Improvements in upcall processing code path.

Ethan Jackson ethan at nicira.com
Tue Feb 12 23:47:50 UTC 2013

FWIW: It might be useful to check if this series has an impact on
something like apachebench which I would expect benefit more from
batching, but be a little bit less specialized than either
ovs-benchmark or udpping.


On Tue, Feb 12, 2013 at 2:03 PM, Ben Pfaff <blp at nicira.com> wrote:
> On Mon, Feb 11, 2013 at 04:46:16PM +0200, Jarno Rajahalme wrote:
>> - 'udpping' sends 10000000 UDP packets with a unique source and destination
>>   port pair to br0 in bursts of 97 packets.  Between bursts it nanosleeps
>>   for 50 nanoseconds.  This results into ~80% CPU (core) utilization.
> Why are the bursts 97 packets long?
> It would be great if you could supply the udpping program.  Ideally,
> you'd add it as a mode to the ovs-benchmark program in the utilities
> directory, but a quick-and-dirty C program would work too.
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