perf record: per-event sampling period

perf record: per-event sampling period

[Yuanfang Chen]

Hi all,

Is the per-event sampling period supported now? I'm searching around,
found [1] using "-c 100,1000" method, [2] using
"cpu/----/period=1000". However, neither of these work in my box
(fedora 18, 3.8.11-200.fc18.x86_64, with perf package from fedora 18
repo ).

thanks,
yuanfang

[1]https://lkml.org/lkml/2010/11/23/122
[2]http://cscads.rice.edu/workshops/summer-2012/slides/performance-tools/CSCADS_2012_perf_events_status_update.pdf

Re: perf record: per-event sampling period

[Runzhen Wang]

Hi, Yuanfang,

Usually, the package from fedora offical repo is stable but not
includes some new feature, so, maybe you can download the latest 
linux kernel source code from kernel.org, change directory to 
tools/perf .

Then, be a root to 'make', and try ./perf record .......

the perf tool is small, compile it needs no more than 1min, please 
have a try. ;-)

Thanks
Runzhen

On Mon, Jun 17, 2013 at 02:18:52PM -0400, Yuanfang Chen wrote:
> Hi all,
> 
> Is the per-event sampling period supported now? I'm searching around,
> found [1] using "-c 100,1000" method, [2] using
> "cpu/----/period=1000". However, neither of these work in my box
> (fedora 18, 3.8.11-200.fc18.x86_64, with perf package from fedora 18
> repo ).
> 
> thanks,
> yuanfang
> 
> [1]https://lkml.org/lkml/2010/11/23/122
> [2]http://cscads.rice.edu/workshops/summer-2012/slides/performance-tools/CSCADS_2012_perf_events_status_update.pdf
> --
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