Date: Wed, 29 Nov 2006 10:43:01 -0800 From: "Kip Macy" <kip.macy@gmail.com> To: "John Baldwin" <jhb@freebsd.org> Cc: freebsd-current@freebsd.org Subject: Re: KDTRACE is gone? Message-ID: <b1fa29170611291043w4ef2f473l635bfa98fb4e6a5e@mail.gmail.com> In-Reply-To: <200611291210.39449.jhb@freebsd.org> References: <2b22951e0611212109t69b01400q5eb0ba15b028ce68@mail.gmail.com> <20061123213659.GA8405@localhost.localdomain> <20061123215851.GA56442@what-creek.com> <200611291210.39449.jhb@freebsd.org>
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I definitely don't agree with jb@ that this is grounds for not committing
dtrace support. However, his point that the value of dtrace is greatly
diminished if the user has to actively anticipate a need for it and then
compile a custom kernel is valid. Developers are just a little too
comfortable with the notion of "oh, just tell the user to add FOO to his
config and compile a new kernel!".
-Kip
On 11/29/06, John Baldwin <jhb@freebsd.org> wrote:
>
> On Thursday 23 November 2006 16:58, John Birrell wrote:
> > On Thu, Nov 23, 2006 at 10:36:59PM +0100, Stanislaw Halik wrote:
> > > Why isn't importing it as a non-default option acceptable? I believe a
> > > lot of users would be happy to include it in their custom kernels.
> >
> > Because in 5 years time when there is a production server that
> > can't be rebooted, I want the admins to be able to run DTrace.
> > The only way I can guarantee that is by making the ability to
> > load DTrace kernel modules available to everyone.
> >
> > DTrace isn't intended as a toy.
>
> Not having it in GENERIC doesn't mean that. :) We have a lot of machines
> at
> work and none of them run GENERIC, but a custom kernel config. We would
> just
> add the option to the kernel (just like now we statically compile in
> things
> like COMPAT_LINUX which aren't in GENERIC). I think this fear is perhaps
> a
> little inflated relative to reality.
>
> --
> John Baldwin
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