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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20150417200954.GA7056@tassilo.jf.intel.com>
Date:	Fri, 17 Apr 2015 13:09:54 -0700
From:	Andi Kleen <ak@...ux.intel.com>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...nel.org>,
	Michael Ellerman <mpe@...erman.id.au>, mingo@...hat.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 Fri, Apr 17, 2015 at 05:31:26PM +0200, Jiri Olsa wrote:
> 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?

That's even worse -- same hex numbers, just more redundancy.

All the other profilers support symbolic names, which is what
users want.

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/