linux-kernel - Re: [tip:perf/core] perf annotate: Fix annotate context lines regression

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Date:	Thu, 10 Feb 2011 04:41:53 +0100
From:	Mike Galbraith <efault@....de>
To:	Arnaldo Carvalho de Melo <acme@...hat.com>
Cc:	mingo@...hat.com, hpa@...or.com, paulus@...ba.org,
	eranian@...gle.com, linux-kernel@...r.kernel.org,
	tzanussi@...il.com, peterz@...radead.org, fweisbec@...il.com,
	tglx@...utronix.de, mingo@...e.hu,
	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:perf/core] perf annotate: Fix annotate context lines
 regression

On Wed, 2011-02-09 at 14:41 -0200, Arnaldo Carvalho de Melo wrote:
> Em Wed, Feb 09, 2011 at 05:06:18AM +0100, Mike Galbraith escreveu:
> > On Wed, 2011-02-09 at 00:43 +0000, tip-bot for Arnaldo Carvalho de Melo wrote
> > > Gitweb:     http://git.kernel.org/tip/d5e3d747007fdb541e57ed72e020ff0b94db3470
> > > Author:     Arnaldo Carvalho de Melo <acme@...hat.com>
> > > 
> > > perf annotate: Fix annotate context lines regression
> > > 
> > > The live annotation done in 'perf top' needs to limit the context before
> > > lines that aren't filtered out by the min percent filter, if we don't do
> > > that, the screen in a tty often is not enough for showing what is
> > > interesting: lines with hits and a few source code lines before it.
> > 
> > Looks to me like this went from regress a bit while waiting for tui
> > thing to progress a bit immediately :)
> 
> :-) Can you please apply the two patches and give 'perf top --tui' live
> annotation a shot? Just press enter or -> (right key) on a symbol you
> want to annotate.
> 
> I'm still polishing it a bit, want to avoid trying the notes->lock on
> each time record_precise_ip is called, for that I need to share the
> current symbol being annotated (sym_filter_entry) with the annotate
> browser, the timer should not always run, etc, but just so that I can
> get some feedback on how it is shaping up, please try it and report your
> impressions :-)

Initial impression: can I have a pony too? :)

I like this a lot, great for live rummaging.   One thing that would help
with large files maybe - a jump to next spot hotter than N%, but as is
is quite nice.

I managed to lock it up once, but shiny new gizmos usually do hiccup.

	-Mike

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