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Date: Wed, 26 Nov 2003 10:59:24 +0100 (CET)
From: Ingo Molnar <mingo@elte.hu>
Reply-To: Ingo Molnar <mingo@elte.hu>
To: Con Kolivas <kernel@kolivas.org>
Cc: linux kernel mailing list <linux-kernel@vger.kernel.org>
Subject: Re: Demo patch - no interactivity 2.6
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On Mon, 24 Nov 2003, Con Kolivas wrote:

> I created this patch for demonstration purposes.
> 
> People have raised concerns about the overhead of the interactivity
> estimator in 2.6 and it's effect on throughput. Some anecdotes report
> wild accusations of 20% loss (without hard data). [...]

this claim is nonsense, agreed. The only small change in performance
should be for microbenchmark things like lmbench's lat_ctx. But this cost
is well worth it.

	Ingo