[ovs-discuss] How to set the best setting to test packet processing performance?

[Hao Wu]

Got it, then I will try netperf. Thanks.

+++++++++++++++++
Best,
Hao

On Thu, Jul 16, 2015 at 1:14 PM, Ben Pfaff <blp at nicira.com> wrote:

> On Thu, Jul 16, 2015 at 01:12:49PM -0700, Joe Stringer wrote:
> > On 16 July 2015 at 13:08, Ben Pfaff <blp at nicira.com> wrote:
> > > On Thu, Jul 16, 2015 at 11:22:29AM -0700, Hao Wu wrote:
> > >>    Yes, you are right. I find the bottleneck is tcprelay which only
> > >> generates packets at 750Kpps. But even when I add more hosts to send
> > >> packets in parallel, I can't get a higher generation rate. E.g., if I
> use
> > >> only one host, tcpreplay sends packets at 300Kpps, while if I use 6
> hosts,
> > >> each tcpreplay sends packets at around 130Kpps and the total rate is
> still
> > >> 750Kpps. How do you get a higher generation rate in your experiment?
> Thanks.
> > >
> > > I think we used netperf.  I've never use tcpreplay so I don't have any
> > > hints.
> >
> > Even with netperf, you need to run several threads and depending on
> > the test you may exhaust all CPU running netperf to generate the
> > traffic before you start hitting OVS performance limits.
>
> Right, the OVS paper mentions that we ran 400 netperf instances in
> parallel.
>
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