Re: [patch] CFS scheduler, -v19

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On Monday 16 July 2007 05:17, Ingo Molnar wrote:
> 
> * Ed Tomlinson <[email protected]> wrote:
> 
> > I run a java application at nice 15.  Its been a background 
> > application here for as long as SD and CFS have been around.  If I 
> > have a compile running at nice 0, with v19 java gets so little cpu 
> > that the the wrapper that runs to monitor it is timing out waiting for 
> > it to start.  This is new in v19 - something in v19 is not meshing 
> > well with my mix of applications...
> 
> how much longer did the startup of the java app get relative to say v18?
> 
> to debug this, could you check whether this problem goes away if you use 
> nice 10 (or nice 5) instead of nice 15?

Ingo,

It may take a day to two before I get to test this. I have had to revert to 2.6.21 -
it seems that 22 triggers a stall here (21 also can trigger this but its harder)...

Thanks
Ed

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