Re: [tbench regression fixes]: digging out smelly deadmen.

Ingo Molnar
2008-10-10T11:43:12Z

* 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