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Date:      Fri, 9 Jul 2004 20:06:57 +0200
From:      Bernd Walter <ticso@cicely12.cicely.de>
To:        Kirk Strauser <kirk@strauser.com>
Cc:        freebsd-current@freebsd.org
Subject:   Re: default HZ value in 5.2.1
Message-ID:  <20040709180656.GB35892@cicely12.cicely.de>
In-Reply-To: <200407091231.29346.kirk@strauser.com>
References:  <014701c465ce$4e6a8a90$037ba8c0@gnome.co.uk> <200407091231.29346.kirk@strauser.com>

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On Fri, Jul 09, 2004 at 12:31:29PM -0500, Kirk Strauser wrote:
> On Friday 2004-07-09 11:03 am, Chris Stenton wrote:
> 
> > Any reason why the default value for HZ is still set at 100?  Would not
> > 1000 be better for finer granularity?

The default on i386 is 100 - this is not the case on alpha.

> Setting HZ=1000 absolutely destroyed my Alpha's throughput:

As long as I can remember alphas default to > 1000.
E.g. some are doing 1200 and other 1024 depending on the platform.
AFAIK there are reasons not be exactly 1000.
Why do you need 1000 instead of the system default?

-- 
B.Walter                   BWCT                http://www.bwct.de
bernd@bwct.de                                  info@bwct.de



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