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Date:      Mon, 11 Nov 2002 16:59:26 -0500 (EST)
From:      Andrew Gallatin <gallatin@cs.duke.edu>
To:        "Michael A. Mackey" <michael-mackey@uiowa.edu>
Cc:        freebsd-alpha@FreeBSD.ORG
Subject:   Re: Extreme time drift in SMP mode
Message-ID:  <15824.10302.110339.545856@grasshopper.cs.duke.edu>
In-Reply-To: <1037050487.14529.17.camel@focaccia.>
References:  <1037050487.14529.17.camel@focaccia.>

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Michael A. Mackey writes:
 > I have recently installed 5.0-CURRENT onto my AlphaServer 2100A.  When
 > running an SMP kernel, the time drift is very large.
 > 
 > I am running ntpd, but it doesn't correct the error in system time.
 > 
 > The only solution: use CRON to run ntpdate (this prevents ntpd from
 > running) efvery few minutes.  This solution is much less than desirable,
 > as I won;t this box to run kerberos.
 > 
 > Is there some solution to this problem?

Nothing other than disabling SMP..

FWIW, it only happens on 2100s.  Those machines are evil.

Its been a while since I've played w/it.  What does this say:

/usr/bin/time sleep 10

Also, how many CPUs do you have?

Drew

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