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Subject: Re: dynamic-hz
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Con Kolivas <kernel@kolivas.org>
Cc: Andrea Arcangeli <andrea@suse.de>, Pavel Machek <pavel@suse.cz>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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Date: Mon, 13 Dec 2004 12:00:44 +0000
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On Sul, 2004-12-12 at 23:36, Con Kolivas wrote:
> The rest of my users that were setting Hz to 100 for so-called 
> performance gains were doing so under the false impression that cpu 
> usage was lower simply because of the woefully inaccurate cpu usage 
> calcuation at 100Hz.

It makes a difference for some HPC workloads. I run 100Hz because
- It improves battery life
- Laptops tend to lose ticks on battery status queries at 1Khz