Messages in this thread | | | Subject | Re: 2.6.25-rc1: volanoMark 45% regression | From | "Zhang, Yanmin" <> | Date | Mon, 18 Feb 2008 14:05:45 +0800 |
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On Mon, 2008-02-18 at 10:52 +0530, Balbir Singh wrote: > Zhang, Yanmin wrote: > > On Mon, 2008-02-18 at 10:26 +0530, Balbir Singh wrote: > >> Zhang, Yanmin wrote: > >>>>> Did you have > >>>>> CONFIG_FAIR_USER_SCHED enabled in both cases? > >>>> Yes. > >>>> > >>>> CONFIG_FAIR_GROUP_SCHED=y > >>>> CONFIG_FAIR_USER_SCHED=y > >>>> > >> Interesting that you have CONFIG_FAIR_USER_SCHED. Do you have any other users on > >> the system (are they running anything at the time of the benchmark)? > > No. As for volanoMark, I start volanoMark both server and client processes while > > starting some system measurement tools such like vmstat/iostat/sar. All the processes > > run under the same user. > > > > Ok, so the bandwidth is not split between users, which is very good. I assume > the same user is root? No. I use an ordinary user.
> > > > >> Could you > >> turn off CONFIG_FAIR_USER_SCHED and turn on CONFIG_FAIR_GROUP_SCHED. > > I will try. > > > >> I am going > >> to run some tests with 2.6.25-rc2 and Volanomark and see how that goes. > > Pls. set /proc/sys/kernel/sched_compat_yield=1 before starting test. > > Thanks for the tip, I would have definitely missed this one I use Jrockit JVM and enables hugetlb, but I don't think hugetlb has too much help on volanoMark, especially for the regression tracking.
-yanmin
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