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Date:      Tue, 14 Nov 2000 14:18:59 -0800 (PST)
From:      John Baldwin <jhb@FreeBSD.org>
To:        Adrian Chadd <adrian@FreeBSD.org>
Cc:        freebsd-current@FreeBSD.org, Poul-Henning Kamp <phk@FreeBSD.org>
Subject:   Re: Current has hosed the i8254 timecounter...
Message-ID:  <XFMail.001114141859.jhb@FreeBSD.org>
In-Reply-To: <20001114225059.B4195@roaming.cacheboy.net>

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On 14-Nov-00 Adrian Chadd wrote:
> On Mon, Nov 13, 2000, Poul-Henning Kamp wrote:
>> 
>> It seems that something recently toasted the quasi-magic i8254 timecounter
>> code to the point of unusability.
>> 
>> On my laptop I run a ntpdate every minute, and the result looks like this:
>> 
> 
> I'm seeing something similar with -current on this laptop here. Magically,
> if I jiggle the mouse whilst playing an mp3, things start to skip and the
> clock goes *way* off way (sometimes by a few seconds in a few seconds. :)

That is probably due to the random harvesting thread.  Or rather, that the
overhead of ithreads together with the random kthread and the load of playing
mp3's is starving your CPU.  Do you have any idle time at all when this happens?

-- 

John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/
PGP Key: http://www.baldwin.cx/~john/pgpkey.asc
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/


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