linux-kernel - Re: 'perf upgrade' (was: Re: [PATCH v9 00/11] Add support for JSON event files.)

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Date:	Fri, 17 Apr 2015 17:31:26 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Michael Ellerman <mpe@...erman.id.au>, mingo@...hat.com,
	ak@...ux.intel.com, Arnaldo Carvalho de Melo <acme@...nel.org>,
	peterz@...radead.org, namhyung@...nel.org,
	linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	Pekka Enberg <penberg@....fi>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Thomas Gleixner <tglx@...utronix.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Borislav Petkov <bp@...en8.de>
Subject: Re: 'perf upgrade' (was: Re: [PATCH v9 00/11] Add support for JSON
 event files.)

On Wed, Apr 15, 2015 at 01:50:42PM -0700, Sukadev Bhattiprolu wrote:

SNIP

> | 
> |  - to blindly follow some poorly constructed vendor format with no 
> |    high level structure, that IMHO didn't work very well when OProfile 
> |    was written, and misrepresenting it as 'symbolic event names'.
> | 
> |    Take a look at:
> | 
> |      https://download.01.org/perfmon/HSW/Haswell_core_V17.json
> | 
> |    and weep.
> 
> Evil vendor formats, but to be fair, here is what _we_ have today:
> 
> 	perf stat -e r10068,r20036,r40060,r40ac sleep 1

hum, you could also use the 'cpu/event=.../' syntax right?
It's not symbolic name, just to be fair ;-)

jirka
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