linux-kernel - Re: [announce] Performance Counters for Linux, v6

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Date:	Wed, 21 Jan 2009 13:14:41 -0800
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Randy Dunlap <randy.dunlap@...cle.com>,
	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Stephane Eranian <eranian@...glemail.com>,
	Eric Dumazet <dada1@...mosbay.com>,
	Robert Richter <robert.richter@....com>,
	Arjan van de Ven <arjan@...radead.org>,
	Peter Anvin <hpa@...or.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	"David S. Miller" <davem@...emloft.net>,
	Mike Galbraith <efault@....de>
Subject: Re: [announce] Performance Counters for Linux, v6

Ingo Molnar wrote:
> * Randy Dunlap <randy.dunlap@...cle.com> wrote:
> 
>> Ingo Molnar wrote:
>>> We are pleased to announce version 6 of our performance counters subsystem 
>>> implementation. The shortlog, diffstat and the combo patch can be found 
>>> below. The combo patch against latest -git (2.6.29-rc2) can be also found 
>>> at:
>>>
>>>    http://people.redhat.com/mingo/perfcounters/perfcounters-v6-v2.6.29-rc2.patch
>>>
>>> It's also available in tip/master at:
>>>  
>>>    http://people.redhat.com/mingo/tip.git/README
>>>  
>>> There are many changes in the v6 release:
>>>
>>>  - PowerPC performance counters support from Paul Mackerras, for POWER6
>>>    and for the PPC970 family.
>>>
>>>  - ioctl API to disable/enable individual counters and groups without
>>>    closing their fd. This can be useful for libraries, ad-hoc 
>>>    instrumentation and PAPI support.
>>>
>>>  - 'pinned' and 'exclusive' counter attributes - for those
>>>    applications that want to influence counter scheduling explicitly.
>>>
>>>  - The 'perfstat' utility (ex 'timec') has been updated:
>>>
>>>       http://people.redhat.com/mingo/perfcounters/perfstat.c
>>>
>>>  - 'kerneltop' (easy-to-use text mode NMI profiler) has been updated:
>>>    
>>>       http://people.redhat.com/mingo/perfcounters/kerneltop.c
>> BTW, this kerneltop has nothing to do with that other one??
>>
>> 	http://www.xenotime.net/linux/kerneltop/
> 
> heh, didnt know about that one - there's no connection other than the name 
> :-) The project seems somewhat stale but indeed similar in purpose. Can
> rename to kerneltop2 i guess.

Yes, it's stale.  I plan to update it sometime this year.  :)

I don't care if you rename it or not.

-- 
~Randy
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