linux-kernel - Re: [RFC] perf annotate: option to report global percentage

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Message-ID: <20180731092128.GA17617@krava>
Date:   Tue, 31 Jul 2018 11:21:28 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     Stephane Eranian <eranian@...gle.com>
Cc:     Jiri Olsa <jolsa@...nel.org>, LKML <linux-kernel@...r.kernel.org>,
        Arnaldo Carvalho de Melo <acme@...nel.org>
Subject: Re: [RFC] perf annotate: option to report global percentage

On Thu, Jul 19, 2018 at 10:25:39AM +0200, Jiri Olsa wrote:
> On Wed, Jul 18, 2018 at 02:55:14PM -0700, Stephane Eranian wrote:
> > Hi Jiri,
> > 
> > As far as I know, once you go into annotate mode, via perf report TUI
> > mode, the percentage you see per instruction is relative to the
> > function. I would like the option to display the total percentage,
> > i..e, the importance of the instruction for the entire run. Right now,
> > if I want that, I need to do function_percentage * insn_percentage by
> > hand. This is not convenient. Having a key toggle would be very
> > useful, worst case a cmdline option.
> > 
> > What do you think?
> 
> hi,
> that should be simple to add, we already have the 'F' in the
> main browser window to toggle among full/filtered scale
> 
> I'll try to add something similar for annotation window

sry for delay, I was out last week

I put something together and pushed it in here:
  git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
  perf/annotate_percent

there's the 'p' key to switch between local and global period
I haven't added any command line option for stdio yet

I'll have more testing and post later but any feedback
now would be great

thanks,
jirka