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Date:      Wed, 01 May 2002 22:16:35 +0200
From:      Poul-Henning Kamp <phk@critter.freebsd.dk>
To:        Daniel Rock <D.Rock@t-online.de>
Cc:        current@FreeBSD.ORG
Subject:   Re: clock drift in -CURRENT 
Message-ID:  <69366.1020284195@critter.freebsd.dk>
In-Reply-To: Your message of "Wed, 01 May 2002 21:57:19 %2B0200." <3CD0489F.D79EFF3F@t-online.de> 

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In message <3CD0489F.D79EFF3F@t-online.de>, Daniel Rock writes:
>Poul-Henning Kamp schrieb:
>> 
>> When was your source tree from on that kernel ?
>> 
>> I'm not too confident in your diagnosis, mostly because we don't
>> have a counter like you describe :-)
>> 
>> My guess is that ntpd get confused.
>> 
>> Please try a newer kernel, a number of bug(lets) have been fixed
>> since march.
>> 
>> If it happens again, please email me the output of:
>>         ntpdc -c peer
>>         ntpdc -c loopi
>>         ntpdc -c kerni
>>         dmesg
>> 
>[...]
>
>My kernel war relatively recent at the time of last boot - build
>around March 2nd from -CURRENT sources a few hours before.

Right, but look at a cvs log src/sys/kern/kern_tc.c... I've fixed
at least one bug in the NTP steering since then.

>If someone runs -CURRENT with default HZ of 100 and moans 247 days
>later, his -CURRENT cannot be called -CURRENT any more...

:-)

>I am now running an up-to-date -CURRENT. I have set HZ=10000, so
>I don't have to wait another 50 days. Hope this high HZ value has
>no negative impact on the test.
>
>I will inform you in 3 days if anything strange happens again.

Cool.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.

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