linux-kernel - Re: [PATCH 2.6.21] Return available first timeslice to the creator, not parent

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Message-Id: <1188465299.6112.34.camel@twins>
Date:	Thu, 30 Aug 2007 11:14:59 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Michal Schmidt <xschmi00@...d.feec.vutbr.cz>
Cc:	Vitaly Mayatskikh <vmayatsk@...hat.com>,
	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...hat.com>
Subject: Re: [PATCH 2.6.21] Return available first timeslice to the
	creator, not parent

On Thu, 2007-08-30 at 10:37 +0200, Michal Schmidt wrote:
> Vitaly Mayatskikh skrev:
> > Short-living process returns its timeslice to the parent, this
> > affects process that creates a lot of such short-living threads,
> > because its not a parent for new threads.
> 
> I don't see the point of sending patches for old Linux versions such as 
> 2.6.21, unless it's something applicable to the -stable tree.

The older trees might want to have this, perhaps the .16 by Adrian,
certainly distros still care.

> Do recent kernels with CFS have the same problem?

Very much not comparable, as you probably guessed :-)

> > Patch fixes this issue and
> > doesn't break kabi as does the patch from reporter:
> > http://lkml.org/lkml/2007/4/7/21
> 
> There's no kabi.

True.

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