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Date:      Mon, 21 Nov 2005 02:37:25 -0200
From:      Rainer Alves <rainer.alves@gmail.com>
To:        Thomas Quinot <thomas@FreeBSD.ORG>,  current@freebsd.org
Subject:   Re: 6.0-BETA5 random freeze with rtc
Message-ID:  <43814F05.2010402@gmail.com>
In-Reply-To: <20051121014504.GA1236@melamine.cuivre.fr.eu.org>
References:  <20051121014504.GA1236@melamine.cuivre.fr.eu.org>

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Thomas Quinot wrote:

>On a new Dell Precision 380 box running 6.05-BETA5, I've seen random
>freezes (apparently not related to specific activities running on the
>machine, which has web and mail servers and also runs an X server) a few
>days apart.
>
>On the last two instances, the last message recorded in the logs was the
>same:
>
>Nov 21 02:11:22 melamine kernel: rtc: 1000 > kern.hz: Timing will be inaccurate, please increase hz.
>
>and this messages does not occur at any other time, so I suspect it's
>related to the freezes I saw. I might have been running mplayer shortly
>before the freeze. Could this be related to PR 71536? (i.e. could the
>rtc bug cause a freeze, and not only an annoying console message?)
>
>Thomas.
>  
>

I've had the same problem with mplayer+RTC on (5|6).x, the solution was 
to rebuild the kernel with "options HZ=1160", as well as rebuild the 
emulators/rtc port after each and every kernel update (reloading rtc.ko 
before launching mplayer). Messages regarding "inaccurate timing" and 
weird system freezes disappeared ever since.
7-current doesn't seem to be affected by any of those.

--
Rainer Alves
BrasilTelecom




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