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

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Message-ID: <20180803112955.GA2402@krava>
Date:   Fri, 3 Aug 2018 13:29:55 +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 Fri, Aug 03, 2018 at 12:28:16AM -0700, Stephane Eranian wrote:
> Hi Jiri,
> On Tue, Jul 31, 2018 at 2:21 AM Jiri Olsa <jolsa@...hat.com> wrote:
> >
> > 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
> >
> Tested your code on a few examples and it seems to work well. Looks nice!
> Thanks.

cool, I'll have it sorted and send out soon

> PS: I'll have more small requests coming based on user feedback and my
> personal experience.

keep them comming, we need more user feedback ;-)

thanks,
jirka