Messages in this thread |  | | | Date | Fri, 10 Oct 2008 13:42:45 +0200 | | From | Ingo Molnar <> | | Subject | Re: [tbench regression fixes]: digging out smelly deadmen. |
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* Evgeniy Polyakov <s0mbre@tservice.net.ru> wrote:
> > i'm glad that you are looking into this! That is an SMP box, right? > > If yes then could you try this sched-domains tuning utility i have > > written yesterday (incidentally): > > > > http://redhat.com/~mingo/cfs-scheduler/tune-sched-domains > > I've removed SD_BALANCE_NEWIDLE: > # ./tune-sched-domains $[191-2]
> And got noticeble improvement (each new line has fixes from previous): > > vanilla 27: 347.222 > no TSO/GSO: 357.331 > no hrticks: 382.983 > no balance: 389.802
okay. The target is 470 MB/sec, right? (Assuming the workload is sane and 'fixing' it does not mean we have to schedule worse.)
We are still way off from 470 MB/sec.
Ingo
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