Messages in this thread | | | Date | Mon, 09 Jul 2012 09:46:47 -0700 | From | Rick Jones <> | Subject | Re: [net-next RFC V5 0/5] Multiqueue virtio-net |
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On 07/08/2012 08:23 PM, Jason Wang wrote: > On 07/07/2012 12:23 AM, Rick Jones wrote: >> On 07/06/2012 12:42 AM, Jason Wang wrote: >> Which mechanism to address skew error? The netperf manual describes >> more than one: > > This mechanism is missed in my test, I would add them to my test scripts. >> >> http://www.netperf.org/svn/netperf2/trunk/doc/netperf.html#Using-Netperf-to-Measure-Aggregate-Performance >> >> >> Personally, my preference these days is to use the "demo mode" method >> of aggregate results as it can be rather faster than (ab)using the >> confidence intervals mechanism, which I suspect may not really scale >> all that well to large numbers of concurrent netperfs. > > During my test, the confidence interval would even hard to achieved in > RR test when I pin vhost/vcpus in the processors, so I didn't use it.
When running aggregate netperfs, *something* has to be done to address the prospect of skew error. Otherwise the results are suspect.
happy benchmarking,
rick jones
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