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From: Ingo Molnar <mingo@kernel.org>
To: Vince Weaver <vince@deater.net>
Cc: Stephane Eranian <eranian@google.com>,
	LKML <linux-kernel@vger.kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	"mingo@elte.hu" <mingo@elte.hu>,
	"ak@linux.intel.com" <ak@linux.intel.com>,
	Arnaldo Carvalho de Melo <acme@redhat.com>,
	Jiri Olsa <jolsa@redhat.com>,
	"Yan, Zheng" <zheng.z.yan@intel.com>,
	Borislav Petkov <bp@alien8.de>,
	Maria Dimakopoulou <maria.n.dimakopoulou@gmail.com>
Subject: Re: [PATCH v7 3/4] perf,x86: add Intel RAPL PMU support
Date: Thu, 28 Nov 2013 13:26:19 +0100	[thread overview]
Message-ID: <20131128122619.GA6561@gmail.com> (raw)
In-Reply-To: <alpine.DEB.2.02.1311271653280.24499@pianoman.cluster.toy>


* Vince Weaver <vince@deater.net> wrote:

> On Wed, 27 Nov 2013, Stephane Eranian wrote:
> 
> > On Wed, Nov 27, 2013 at 7:35 PM, Vince Weaver <vince@deater.net> wrote:
> 
> > > So I notice PP1 (which is the GPU power on non-server chips)
> > > is not supported.
> > >
> > > Is that just for simplicity?
> > >
> > Does it work on specific models only? I bet so. How to detect those?
> 
> In general it is on the machines that don't support the DRAM measurements 
> (so the non-EP machines) but I don't know if there's a nice list anywhere.
> 
> Intel manuals say:
>    For a client platform, PP1 domain refers to the power plane of a 
>    specific device in the uncore. For server platforms, PP1 domain is not
>    supported,
> 
> usually PP1 I think maps to the embedded GPU.

It would indeed be nice to expose PP1 too via the same facility - 
Haswell and later spends some 40% of the CPU die on the integrated GPU 
and people end up using it.

Thanks,

	Ingo

  reply	other threads:[~2013-11-28 12:26 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-11-12 16:58 [PATCH v7 0/4] perf/x86: " Stephane Eranian
2013-11-12 16:58 ` [PATCH v7 1/4] perf: add active_entry list head to struct perf_event Stephane Eranian
2013-11-27 14:07   ` [tip:perf/core] perf: Add " tip-bot for Stephane Eranian
2013-11-12 16:58 ` [PATCH v7 2/4] perf stat: add event unit and scale support Stephane Eranian
2013-11-27 14:08   ` [tip:perf/core] tools/perf/stat: Add " tip-bot for Stephane Eranian
2013-11-12 16:58 ` [PATCH v7 3/4] perf,x86: add Intel RAPL PMU support Stephane Eranian
2013-11-27 10:23   ` Peter Zijlstra
2013-11-27 14:08   ` [tip:perf/core] perf/x86: Add " tip-bot for Stephane Eranian
2013-11-27 18:35   ` [PATCH v7 3/4] perf,x86: add " Vince Weaver
2013-11-27 18:38     ` Stephane Eranian
2013-11-27 22:03       ` Vince Weaver
2013-11-28 12:26         ` Ingo Molnar [this message]
2013-11-28 12:35           ` Stephane Eranian
2013-11-29 19:16             ` Vince Weaver
2013-11-29 20:09               ` Stephane Eranian
2013-11-29 20:31                 ` Borislav Petkov
2013-11-29 23:25                   ` Stephane Eranian
2013-11-30 16:39                     ` Vince Weaver
2013-11-12 16:58 ` [PATCH v7 4/4] perf,x86: add RAPL hrtimer support Stephane Eranian
2013-11-27 14:10   ` [tip:perf/core] perf/x86: Add " tip-bot for Stephane Eranian
2013-11-27 14:33   ` tip-bot for Stephane Eranian
2013-11-12 18:10 ` [PATCH v7 0/4] perf/x86: add Intel RAPL PMU support Andi Kleen

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