[c-nsp] Basic Load/Stress Test Tool

Peter Rathlev peter at rathlev.dk
Wed Nov 19 14:33:04 EST 2008


On Wed, 2008-11-19 at 13:25 +0100, Jerome Covini wrote:
> And for both don't forget to maximize the mss when choosing tcp... Else
> you'll stress nothing :).

If I may say so: "Au contraire". :-) Many small packets will stress the
forwarding performance of the router more than (relatively) fewer larger
packets.

Many routers and L3 switches have a more or less fixed maximum pps rate,
with the only limit for the bandwidth being some backplane or bus limit.
Adjusting the MTU/MSS upwards increases throughput (bps) but not the pps
performance.

Regards,
Peter




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