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Subject: Re: HZ, preferably as small as possible
To: rml@tech9.net (Robert Love)
Date: Fri, 12 Jul 2002 02:24:16 +0100 (BST)
Cc: thunder@ngforever.de (Thunder from the hill),
       oliver@klozoff.com (Stevie O), linux-kernel@vger.kernel.org (lkml)
In-Reply-To: <1026435320.1178.362.camel@sinai> from "Robert Love" at Jul 11, 2002 05:55:20 PM
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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
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> Uh, HZ is not scheduler calls per second.
> 
> Neither exactly is it interrupts per second, but _timer_ interrupts per
> second.  It is the frequency of the timer interrupt.

Its not exactly that either. Its 'rate at which jiffies is incremented'.
The distinction is not pedantic its rather critical when you go to a 
variable timer tick...

Alan
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