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Date: Fri, 10 Sep 2010 16:31:40 +0200
From: Dimitry Andric <dim@FreeBSD.org>
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To: "Thomas E. Spanjaard" <tgen@deepbone.net>
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Cc: freebsd-current@freebsd.org
Subject: Re: Eventtimers b0rking w/ math/atlas
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On 2010-09-10 15:50, Thomas E. Spanjaard wrote:
> While trying to build math/atlas on a FreeBSD/amd64 9.0-CURRENT r212411,
> the kernel hangs at some point when math/atlas tries to run some tests
> (presumably the ones to profile the code and optimise). The kernel
> spouts messages about Starting event timers: LAPIC @ 1000Hz, HPET @
> 127Hz; then LAPIC @ 1000Hz, HPET @ 8128Hz (iirc), back, then back again.

It's probably running profiled executables (e.g. compiled with -pg)?
This can lead to the above messages, and apparently also to deadlocks.

I am not sure what to do about it though, except confirm that this is
very likely your problem...