linux-kernel - Re: [RFC/PATCH] perf report: Show random usage tip on the help line

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Date:	Tue, 5 Jan 2016 14:32:47 +0800
From:	"Wangnan (F)" <wangnan0@...wei.com>
To:	Namhyung Kim <namhyung@...nel.org>,
	Arnaldo Carvalho de Melo <acme@...nel.org>
CC:	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Jiri Olsa <jolsa@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	"David Ahern" <dsahern@...il.com>,
	Stephane Eranian <eranian@...gle.com>,
	Andi Kleen <andi@...stfloor.org>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Subject: Re: [RFC/PATCH] perf report: Show random usage tip on the help line



On 2016/1/5 13:36, Namhyung Kim wrote:
> Currently perf report only shows a help message "For a higher level
> overview, try: perf report --sort comm,dso" unconditionally (even if
> the sort keys were used).  Add more help tips and show randomly.
>
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>
> ---

That's really funny.

Some inconvenience:

  1. Tip is never change during one execution of 'perf report', even if
     I switch to another view using 'enter' and switch back. It should 
better
     if tips updated when redrawing.

  2. I think add a "Tip: " prefix to the content should be better, or 
users may
     confuse what he/her doing causes this message

  3. What about creating a tools/perf/Documentation/tips.txt and 
generate tips
     table dynamically?

Thank you.


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