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Date:      Thu, 01 Jun 2000 11:00:09 +0200
From:      Dirk Zoller <duz@onlinehome.de>
To:        questions@freebsd.org
Subject:   microuptime went backwards on Athlon
Message-ID:  <39362619.D6A1ECEE@onlinehome.de>

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Hello,

yesterday I changed my mainboard/CPU to an EPOX 7KXA and an Athlon 700.
Before I had an K6-2/450 and few problems (at least not the following).

Now I see the system going nuts with zillions of messages "microuptime
went backwards" in the syslog. Actually the system becomes unusable because
it is so busy writing these messages.

At the same time the clock moves rapidly forward. Within a few minutes
the output of the date command advances by several hours.

I'm not sure when this happens but it seems to be start when
the system is under load of a big compile job. I.e. I can use it for
hours with editing tasks but when I start to compile stuff -- not the
first time but after a while -- the problem begins.
I also observed the problem when using gzip on a very large file.

More info:

FreeBSD europa 4.0-STABLE FreeBSD 4.0-STABLE #7: Wed May 31 13:11:13 CEST 2000    
root@europa:/usr/src/sys/compile/EUROPA  i386

I cvsup-ed and made world (and kernel) a few days ago.

I have 256 MB RAM but otherwise no fancy stuff (one IDE drive, an old
RIVA-128 graphics card).


I don't think it is a thermal problem because I have a good cooler and
the BIOS reports temperatures under 40 degree Celsius. Also I reduced
the system clock to see if that helps. It didn't.

I would be grateful for any hint, as I'd neither like to downgrade my
hardware nor my operating system.


-- 
Dirk Zoller				Fon: 06106-876566
Obere Marktstraße 5			e-mail: duz@sol-3.de
63110 Rodgau


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