linux-kernel - Re: [GIT PULL] perf fixes

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Message-ID: <20110124220032.GE29975@ghostprotocols.net>
Date:	Mon, 24 Jan 2011 20:00:32 -0200
From:	Arnaldo Carvalho de Melo <acme@...hat.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Frédéric Weisbecker <fweisbec@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [GIT PULL] perf fixes

Em Mon, Jan 24, 2011 at 10:25:26PM +0100, Ingo Molnar escreveu:
> * Arnaldo Carvalho de Melo <acme@...hat.com> wrote:
> > Was this on a freshly installed machine? Or on a freshly updated one?
> > 
> > Probably its the build-id collecting at the end of a session, on the
> > first run you had a cold cache and it had to figure out which binaries
> > to cache on ~/.debug, second time it was already cached so it was fast.
> 
> Hm, it would be nice to not surprise users with an unlimited-timeout, up to half a 
> minute 'frozen' app. Can we possibly display a more finegrained progress indicator?

Definetely, adding this to the todo list.

In fact perf_session__process_events already has an ui_progress stuff,
its just that it works only on report/TUI. Need to make it work with
some /-|/- spinning text progress indicator after a "collecting
build-ids:" string, something like that.

- Arnaldo
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