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

[Namhyung Kim]

Hi Jiri,

On Mon, 21 Jul 2014 11:07:55 +0200, Jiri Olsa wrote:
> 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'

Argh, you're right.  It should be fixed with this patch:

Thanks,
Namhyung