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Date: Sat, 4 Dec 2010 16:23:01 -0600
Message-ID: <AANLkTinQ6j-fBvQsKAn-NwkR_LJUSesTYp75cM-KB3VV@mail.gmail.com>
From: Zhihao Yuan <lichray@gmail.com>
To: Andriy Gapon <avg@freebsd.org>
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Cc: Brandon Gooch <jamesbrandongooch@gmail.com>, freebsd-stable@freebsd.org,
	Navdeep Parhar <nparhar@gmail.com>,
	Jeremy Chadwick <freebsd@jdc.parodius.com>
Subject: Re: Fwd: Re: Fail to use Dtrace on FreeBSD 8.1-STABLE
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On Sat, Dec 4, 2010 at 5:19 AM, Andriy Gapon <avg@freebsd.org> wrote:

> on 04/12/2010 04:28 Zhihao Yuan said the following:
> > My world and kernel are sync. Is it possible that the dtrace-enabled
> kernel must
> > be compiled with '-g'?
>
> It shouldn't be a requirement.  But please try.
>

HAHAHAHA!  It matters.... Not KBD, not DDB, only the DEBUG=-g option. It
seems like DTrace requires the symbols inside a kernel/program. Well, now my
DTrace works perfectly, and the examples on the wiki also work. The next
step is to try to use it to trace my program. SDT may help. I need to learn
more. Thanks guys...


> DTrace (userland utility on FreeBSD) self-diagnostics really should be
> improved.
> Obscure complaints about problem in system .d files do not help at all for
> a
> user to understand what the actual problem could be.  Sigh.
>
> --
> Andriy Gapon
>



-- 
Zhihao Yuan
The best way to predict the future is to invent it.