linux-kernel - Re: [patch] dynticks core: Fix idle time accounting

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Message-ID: <20061004075657.GA31485@elte.hu>
Date:	Wed, 4 Oct 2006 09:56:57 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Valdis.Kletnieks@...edu
Cc:	tglx@...utronix.de, Andrew Morton <akpm@...l.org>,
	LKML <linux-kernel@...r.kernel.org>, Jim Gettys <jg@...top.org>,
	John Stultz <johnstul@...ibm.com>,
	David Woodhouse <dwmw2@...radead.org>,
	Arjan van de Ven <arjan@...radead.org>,
	Dave Jones <davej@...hat.com>
Subject: Re: [patch] dynticks core: Fix idle time accounting


* Valdis.Kletnieks@...edu <Valdis.Kletnieks@...edu> wrote:

> Even though I have CONFIG_HZ=1000, this ends up generating a synthetic 
> count that works out to 100 per second.  gkrellm and vmstat are happy 
> with that state of affairs, but I'm not sure why it came out to 
> 100/sec rather than 1000/sec.

that's how it worked for quite some time: all userspace APIs are 
HZ-independent and depend on USER_HZ (which is 100 even if HZ is 1000).

	Ingo
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