[lkml]   [2010]   [May]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH 1/5] perf stat: add perf stat -B to pretty print large numbers

* Arnaldo Carvalho de Melo <> wrote:

> From: Stephane Eranian <>
> It is hard to read very large numbers so provide an
> option to perf stat to separate thousands using a
> separator. The patch leverages the locale support of
> stdio. You need to set your LC_NUMERIC appropriately,
> for instance LC_NUMERIC=en_US.UTF8. You need to pass -B
> to activate this feature. This way existing scripts
> parsing the output do not need to be changed. Here is an
> example.

I've pulled it, but IMO we should go one step further:
this feature should be made unconditional. The current
numbers displayed by perf stat are often human-unreadable.

scripts should not parse pretty-printed output.

We used to have something like that, in the form of:

perf record --no-samples --stat -e cycles -e instructions -a sleep 1
perf report -n -t :

But the Newt changes broke this stat-only recording mode.
Furthermore, there should be a --raw kind out output mode
for perf stat as well.



 \ /
  Last update: 2010-05-19 08:31    [W:0.086 / U:3.952 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site