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Date:      Fri, 09 Jul 2004 12:23:01 -0400
From:      Chuck Swiger <cswiger@mac.com>
To:        Chris Stenton <jacs@gnome.co.uk>
Cc:        current@freebsd.org
Subject:   Re: default HZ value in 5.2.1
Message-ID:  <40EEC665.5010608@mac.com>
In-Reply-To: <014701c465ce$4e6a8a90$037ba8c0@gnome.co.uk>
References:  <014701c465ce$4e6a8a90$037ba8c0@gnome.co.uk>

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Chris Stenton wrote:
> Any reason why the default value for HZ is still set at 100?

Sure.  Timer interrupts and context switching aren't free, you know: the 
faster the HZ, the more time the system spends on overhead rather than doing 
useful work.

> Would not 1000 be better for finer granularity?

Certainly it would, but tradeoffs exist....

-- 
-Chuck



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