linux-kernel - Re: "sched: add vslice" causes horrible interactivity under load

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Message-ID: <20080127221702.GA18151@elte.hu>
Date:	Sun, 27 Jan 2008 23:17:02 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	"Benjamin K. Stuhl" <benjamin.stuhl@...orado.edu>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Thomas Gleixner <tglx@...utronix.de>,
	Linux-Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: "sched: add vslice" causes horrible interactivity under load


* Ingo Molnar <mingo@...e.hu> wrote:

> while such delays are happening? Please enable CONFIG_SCHED_DEBUG=y 
> and CONFIG_SCHEDSTATS=y as well before doing the dump. Also please 
> send your .config.

another thing that might make a difference is to disable (or enable) the 
CONFIG_FAIR_GROUP_SCHED feature in the .config.

	Ingo
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