From: <rw...@ea...> - 2002-07-13 16:31:43
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> 6. Randy Hron - Trying to determine which patch causes an > improvement in pipe throughput. Believe it is due to > irq balancing. The 2.4.19-pre10-jam2 patches are identified: irqrate lowers pipe latency measured by LMbench on SMP. irqbalance lowers AF_UNIX latency. > However on a networking benchmark Andrew > Theurer saw a 10% decrease with the irq balancing patch. > Randy will try it on different workloads if he determines > it is the patch that causes the improvement. I'm running my usual set of tests on 2.4.19pre10aa2 + irqrate and irqbalance. (pre10aa2 was the basis for jam2) netperf is very configurable and is likely to be a valueable addition to the things I run. It would be helpful to know more about the testing configuration and method that had a netperf regression. I.E. how many processors in box? how many samples? networked or loopback? If there was a script that ran the tests, that would help a lot. -- Randy Hron http://home.earthlink.net/~rwhron/kernel/bigbox.html |