Subject: [ofa-general] NET_BATCH: some results

From: jamal <[email-masked]>
Date: Sun, 07 Oct 2007 17:49:03 -0400

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