John Ronciak writes:
> > If so, it sounds like copybreak should be disabled by default, and/or a
> > runtime switched added for it.
> I wouldn't say "fall over". With small packet only tests (the ones
> being run for this exercise) _all_ packets are being copied which is
> why when the system become CPU bound you see performance drop. Normal
> cases don't only have small packets and is where the gains are. These
> are also what is not being tested because I'm sure nobody would be
> able to agree on an acceptable test for it. Copybreak probably
> shouldn't be used in routing use cases. Since I think routing is the
> special case and not the normal case copybreak should be on by default
> and disabled when used in cases like small packet routing is being
> done.
Well I we need results to verified first and also see some profile of the
surprising copy-break behavior. I used pktgen to create the flow load so it
should be easy to rerun the tests.
Cheers.
--ro
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