Re: CFS review

[Ingo Molnar]

* Mike Galbraith <efault@xxxxxx> wrote:

> > I like your analysis, but how do you explain that these stalls 
> > vanish when __update_curr is disabled?
> 
> When you disable __update_curr(), you're utterly destroying the
> scheduler.  There may well be a scheduler connection, but disabling
> __update_curr() doesn't tell you anything meaningful.  Basically, you're
> letting all tasks run uninterrupted for just as long as they please
> (which is why busy loops lock your box solid as a rock).  I'd suggest
> gathering some sched_debug stats or something... [...]

the output of the following would be nice:

  http://people.redhat.com/mingo/cfs-scheduler/tools/cfs-debug-info.sh

captured while the gears are running.

	Ingo
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