linux-kernel - Re: [PATCHSET 0/6] perf tools: Honor column width setting

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Message-ID: <20140721090755.GA8865@krava.redhat.com>
Date:	Mon, 21 Jul 2014 11:07:55 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...nel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Namhyung Kim <namhyung.kim@....com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCHSET 0/6] perf tools: Honor column width setting

On Wed, Jul 09, 2014 at 02:28:08PM +0900, Namhyung Kim wrote:
> Hello,
> 
> This patchset is to control perf report/top output column width by
> -w/--column-widths option so that it can fit into the terminal size.
> The -w option is there for perf report but it ignored by recent output
> field changed due to some reason.  This patchset fixes it and supports
> perf top also.
> 
> This is sometimes useful if your terminal is small and there's some
> C++ applications which have amazingly long symbol names.  Without this
> patchset user might not see those symbols on TUI, since it maps
> left/right arrow keys to other functions.
> 
> The -w option sets column width starting from the first column
> (overhead or optional overhead_children column unless -F option is
> given).  It doesn't make sense to limit those overhead columns so it's
> not a hard-limit for them.  But it *is* a hard-limit for other columns
> such as comm, dso, symbol, and so on.  One can use 0 not to
> limit/force a width for those columns.

hi,
I've got broken TUI output for "perf report --group" 

Samples: 17  of event 'anon group { cycles, instructions }', Event count (approx.): 9145256
 56.44% 31.59%  ls  libc-2.17.so       [.] __strcoll_l
 39.94% 0.00%  ls  ld-2.17.so         [.] _dl_new_object
 3.48% 0.00%  ls  [kernel.kallsyms]  [k] setup_arg_pages
 0.14% 0.33%  ls  [kernel.kallsyms]  [k] native_write_msr_safe
 0.00% 30.17%  ls  [kernel.kallsyms]  [k] security_inode_permission
 0.00% 29.78%  ls  ls                 [.] indent
 0.00% 8.12%  ls  [kernel.kallsyms]  [k] __slab_alloc

I have 'show-headers' set to false in ~/.perfconfig and the output
got fixed after displaying headers by pressing 'H'

jirka
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