linux-kernel - Re: [BUG] perf mem: perf mem report fails in TUI mode

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Message-ID: <20141210153014.GC6877@krava.brq.redhat.com>
Date:	Wed, 10 Dec 2014 16:30:14 +0100
From:	Jiri Olsa <jolsa@...hat.com>
To:	Stephane Eranian <eranian@...gle.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	"mingo@...e.hu" <mingo@...e.hu>,
	Namhyung Kim <namhyung@...nel.org>,
	David Ahern <dsahern@...il.com>,
	"ak@...ux.intel.com" <ak@...ux.intel.com>
Subject: Re: [BUG] perf mem: perf mem report fails in TUI mode

On Tue, Dec 09, 2014 at 11:15:13PM -0500, Stephane Eranian wrote:
> Hi,
> 
> I was running a couple of tests with perf mem from tip.git and
> found that perf mem -t load rep was failing only in TUI mode.
> With --stdio, it works fine. I did a bit of investigation and found
> out that the TUI mode is failing because some symbol (kernel)
> is showing up with a huge (negative) size. I don't understand
> the connection between the TUI vs. tty browser and symbols.
> 
> To reproduce:
>     $ perf mem -t load rec my_test_program
>     $ perf mem -t load rep
>     $ perf mem -t load rep --stdio

hi,
I couldn't reproduce any failure on the acme's perf/core

since you indicated it's data dependent, could you share
your perf.data?

thanks,
jirka

> 
> Debugging with TUI is a pain, so I stopped.
> 
> I have a patch to improve perf mem a bit but I'd like to get this problem
> fixed first.
> 
> Maybe you have a idea of what's going on.
> 
> Thanks.
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