linux-kernel - Re: [patch for 2.6.26 0/7] Architecture Independent Markers

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Message-ID: <2f11576a0803271008t7574ead1s9ea285d8df57ef1@mail.gmail.com>
Date:	Fri, 28 Mar 2008 02:08:43 +0900
From:	"KOSAKI Motohiro" <m-kosaki@...es.dti.ne.jp>
To:	"Ingo Molnar" <mingo@...e.hu>
Cc:	"Mathieu Desnoyers" <mathieu.desnoyers@...ymtl.ca>,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	"Linus Torvalds" <torvalds@...ux-foundation.org>
Subject: Re: [patch for 2.6.26 0/7] Architecture Independent Markers

Hi

>      text    data     bss     dec     hex filename
>     37642    7014     384   45040    aff0 sched.o.before
>     37930    7134     384   45448    b188 sched.o.after
>
>  288 bytes for only 3 markers in the scheduler - that's 96 bytes added
>  per every marker (44 bytes of that in the fastpath).
>
>  and the tracer codepath is now slower and more complex as well.
>
>  A classic lose-lose situation, so let's apply this patch. Not!
>
>  NACK-ed-by: Ingo Molnar <mingo@...e.hu>

I wonder why nobody doesn't fix this serious problem until now.
and I am interesting to what difference to ftrace and marker.

if I have time at next week, I will investigate the marker problem.
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