Messages in this thread | | | Date | Fri, 11 Jan 2008 09:56:42 -0800 | From | Rick Jones <> | Subject | Re: Netperf TCP_RR(loopback) 10% regression in 2.6.24-rc6, comparing with 2.6.22 |
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>>The test command is: >>#sudo taskset -c 7 ./netserver >>#sudo taskset -c 0 ./netperf -t TCP_RR -l 60 -H 127.0.0.1 -i 50,3 -I 99,5 -- -r 1,1
A couple of comments/questions on the command lines:
*) netperf/netserver support CPU affinity within themselves with the global -T option to netperf. Is the result with taskset much different? The equivalent to the above would be to run netperf with:
./netperf -T 0,7 ...
The one possibly salient difference between the two is that when done within netperf, the initial process creation will take place wherever the scheduler wants it.
*) The -i option to set the confidence iteration count will silently cap the max at 30.
happy benchmarking,
rick jones
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