Messages in this thread | | | Date | Wed, 13 Feb 2008 15:15:16 +0530 | From | Balbir Singh <> | Subject | Re: 2.6.25-rc1: volanoMark 45% regression |
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Zhang, Yanmin wrote: > volanoMark has 45% regression with kernel 2.6.25-rc1 on my both 8-core > stoakley and 16-core Tigerton. > > I used bisect to locate below patch. > > commit 58e2d4ca581167c2a079f4ee02be2f0bc52e8729 > Author: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com> > Date: Fri Jan 25 21:08:00 2008 +0100 > > sched: group scheduling, change how cpu load is calculated > > > > hackbench has about 30% regression on 16-core tigerton, but has about 10% improvement > on 8-core stoakley. > > In addition, tbench has about 6% regression on my 8-core stoakley and > 25% regression on 16-core stoakley. Some other benchmarks, like netperf/aim7 > also have some regression. I will verify if they are all related to the > patch. > > -yanmin
Hi, Yamin,
Thanks for reporting the issue? Any chance we could getthe Oprofile output for the run? The exact commandline and .config being used would also help.
-- Warm Regards, Balbir Singh Linux Technology Center IBM, ISTL
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