Re: [Lse-tech] [patch] sched-domain cleanups,sched-2.6.5-rc2-mm2-A3

From: Andi Kleen
Date: Mon Mar 29 2004 - 05:31:36 EST

On Mon, 29 Mar 2004 02:20:58 -0800
Rick Lindsley <ricklind@xxxxxxxxxx> wrote:

> I've got a web page up now on my home machine which shows data from
> schedstats across the various flavors of 2.6.4 and 2.6.5-rc2 under
> load from kernbench, SPECjbb, and SPECdet.
> Two things that stand out are that sched-domains tends to call
> load_balance() less frequently when it is idle and more frequently when
> it is busy (as compared to the "standard" scheduler.) Another is that
> even though it moves fewer tasks on average, the sched-domains code shows
> about half of pull_task()'s work is coming from active_load_balance() ...
> and that seems wrong. Could these be contributing to what you're seeing?

Sounds quite possible yes.

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