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    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.



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