linux-kernel - Re: [PATCH 0/11] LTTng-core (basic tracing infrastructure) 0.5.108

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Message-ID: <20060915181907.GB17581@elte.hu>
Date:	Fri, 15 Sep 2006 20:19:07 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Andrew Morton <akpm@...l.org>
Cc:	tglx@...utronix.de, karim@...rsys.com,
	Paul Mundt <lethal@...ux-sh.org>, Jes Sorensen <jes@....com>,
	Roman Zippel <zippel@...ux-m68k.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	linux-kernel@...r.kernel.org,
	Christoph Hellwig <hch@...radead.org>,
	Ingo Molnar <mingo@...hat.com>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Tom Zanussi <zanussi@...ibm.com>, ltt-dev@...fik.org,
	Michel Dagenais <michel.dagenais@...ymtl.ca>
Subject: Re: [PATCH 0/11] LTTng-core (basic tracing infrastructure) 0.5.108


* Andrew Morton <akpm@...l.org> wrote:

> What Karim is sharing with us here (yet again) is the real in-field 
> experience of real users (ie: not kernel developers).

well, Jes has that experience and Thomas too.

> I mean, on one hand we have people explaining what they think a 
> tracing facility should and shouldn't do, and on the other hand we 
> have a guy who has been maintaining and shipping exactly that thing to 
> (paying!) customers for many years.

so does Thomas and Jes. So what's the point?

i judge LTT by its current code quality, not by its proponents shouting 
volume - and that quality is still quite poor at the moment. (and then 
there are the conceptual problems too, outlined numerous times) I have 
quoted specific example(s) for that in this thread. Furthermore, LTT 
does this:

 246 files changed, 26207 insertions(+), 71 deletions(-)

and this gives me the shivers, for all the reasons i outlined.

	Ingo
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