On 03/16/2011 07:35 AM, Easley wrote:
> Is there any more informations about 'perf' ? I learn perfmon2, because of I 
> want to get the event of cpu by myself.
> I have developed a tool which need this event, so I must to write these codes 
> by myself.
> Sometimes you mustn't  update the kernel due to the system used to production 
> line.
> There are so many applications that you can't update them.

There is information out there, but most of it is in the kernel source 
code.  You could start with this web site, but it's a bit out of date:
https://perf.wiki.kernel.org/index.php/Main_Page

The bottom line, though, is that you must have a 2.6.31 (preferably 
2.6.32) or newer kernel to use the perf tool.

- Corey

>
> From:  Date:  Mon, Mar 14, 2011 04:21 PM "stephane 
> eranian"<eran...@googlemail.com>  wrote:
>> Hi,
>> Yes, please use perf_events and the perf tool instead.
>> Thanks.
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