* [ofa-general] NET_BATCH: some results
@ 2007-10-07 21:49 jamal
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From: jamal @ 2007-10-07 21:49 UTC (permalink / raw)
To: David Miller
Cc: johnpol, peter.p.waskiewicz.jr, kumarkr, herbert, gaagaan,
Robert.Olsson, netdev, rdreier, mcarlson, randy.dunlap, jagana,
general, mchan, tgraf, jeff, sri, shemminger, kaber
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It seems prettier to just draw graphs and since this one is small file;
here it is attached. The graph demos a patched net-2.6.24 vs a plain
net-2.6.24 kernel with a udp app that sends on 4 CPUs as fast as the the
lower layers would allow it.
Refer to my earlier description of the test setup etc.
As i noted earlier on, for this hardware at about 200B or so, we
approach wire speed, so the app is mostly idle above that as the link
becomes the bottleneck; example it is > 85% idle on 512B and > 90% idle
on 1024B. This is so for either batch or non-batch. So the
differentiation is really in the smaller sized packets.
Enjoy!
cheers,
jamal
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2007-10-07 21:49 [ofa-general] NET_BATCH: some results jamal
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