Re: High priority tasks break SMP balancer?

From: Ingo Molnar
Date: Tue Nov 20 2007 - 00:58:30 EST



* Micah Dowty <micah@xxxxxxxxxx> wrote:

> > this one is being triggered whenever a cpu becomes idle (schedule()
> > --> idle_balance() --> load_balance_newidle()).
> >
> > (this flag is a bit #1 == 2)
> >
> > cat /proc/sys/kernel/sched_domain/cpu0/domain0/flags
>
> Hmm. I don't have this file on my system:
>
> root@micah-64:/proc/sys/kernel/sched_domain/cpu0/domain0# ls
> busy_factor busy_idx forkexec_idx idle_idx imbalance_pct max_interval min_interval newidle_idx wake_idx
> root@micah-64:/proc/sys/kernel/sched_domain/cpu0/domain0# uname -a
> Linux micah-64 2.6.23.1 #1 SMP Fri Nov 2 12:25:47 PDT 2007 x86_64 GNU/Linux
>
> Is there a config option I'm missing?

yes, CONFIG_SCHED_DEBUG.

Ingo
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