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Date: Wed, 1 Dec 2010 19:47:03 -0600
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From: Brandon Gooch <jamesbrandongooch@gmail.com>
To: Zhihao Yuan <lichray@gmail.com>
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Cc: freebsd-stable@freebsd.org, Andriy Gapon <avg@freebsd.org>,
	Jeremy Chadwick <freebsd@jdc.parodius.com>
Subject: Re: Fwd: Re: Fail to use Dtrace on FreeBSD 8.1-STABLE
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On Wed, Dec 1, 2010 at 7:37 PM, Zhihao Yuan <lichray@gmail.com> wrote:
> I guess such an error has nothing to do with the difference between
> compilers... I assumed that you used similar KERNCONF on your two systems.
> So, a hypothesis is: Dtrace does not work correctly on amd64.

I should have mentioned that I do have DTrace sort of working on my
HEAD system (amd64), just strange terminal behavior now (CTRL-C
doesn't allow a running script to produce any output -- pkill dtrace
works however...).

I just found this, which seems to indicate that you may be on to something:

http://forums.freebsd.org/showthread.php?t=19028

What does your kernel config look like? How about /etc/make.conf and
/etc/src.conf?

Maybe looking at the contents of these files will shed some light...

-Brandon