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SubjectRe: [PATCH v6 2/2] perf stat: add interval printing

* Stephane Eranian <eranian@google.com> wrote:

> This patch adds a new printing mode for perf stat.
> It allows internval printing. That means perf stat

s/rnv/rv

> can now print event deltas at regular time interval.
> This is useful to detect phases in programs.
>
> The -I option enables interval printing. It expects
> an interval duration in milliseconds. Minimum is
> 100ms. Once, activated perf stat prints events deltas
> since last printout. All modes are supported.
>
> $ perf stat -I 1000 -e cycles noploop 10
> noploop for 10 seconds
> # time counts events
> 1.000109853 2,388,560,546 cycles
> 2.000262846 2,393,332,358 cycles
> 3.000354131 2,393,176,537 cycles
> 4.000439503 2,393,203,790 cycles
> 5.000527075 2,393,167,675 cycles
> 6.000609052 2,393,203,670 cycles
> 7.000691082 2,393,175,678 cycles

Looks useful!

Thanks,

Ingo


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