From: Frederic Weisbecker <fweisbec@gmail.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>,
linux-kernel@vger.kernel.org, mingo@elte.hu, paulus@samba.org,
davem@davemloft.net, perfmon2-devel@lists.sf.net,
eranian@gmail.com
Subject: Re: [PATCH] perf_events: improve x86 event scheduling (v5)
Date: Mon, 18 Jan 2010 17:22:12 +0100 [thread overview]
Message-ID: <20100118162209.GH10364@nowhere> (raw)
In-Reply-To: <1263826798.4283.606.camel@laptop>
On Mon, Jan 18, 2010 at 03:59:58PM +0100, Peter Zijlstra wrote:
> On Mon, 2010-01-18 at 15:53 +0100, Frederic Weisbecker wrote:
>
> > Not sure what you both mean by this core VS uncore thing :)
> > Is it about hardware counters that apply to single hardware threads
> > or shared among them inside a same core?
>
> Yeah intel has two PMUs, one per logical cpu and one per socket/node. We
> currently don't support the node one yet.
>
> So the thing with these socket wide things is is that they are not able
> to tell where the event originated, so relating that back to a task is
> only possible when there's only one task running.
>
Ah ok.
next prev parent reply other threads:[~2010-01-18 16:22 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-18 8:58 [PATCH] perf_events: improve x86 event scheduling (v5) Stephane Eranian
2010-01-18 13:43 ` Frederic Weisbecker
2010-01-18 13:54 ` Peter Zijlstra
2010-01-18 14:12 ` Stephane Eranian
2010-01-18 14:20 ` Peter Zijlstra
2010-01-18 14:33 ` Peter Zijlstra
2010-01-18 14:20 ` Frederic Weisbecker
2010-01-18 14:32 ` Peter Zijlstra
2010-01-18 14:45 ` Frederic Weisbecker
2010-01-18 14:56 ` Peter Zijlstra
2010-01-18 16:18 ` Frederic Weisbecker
2010-01-18 16:26 ` Peter Zijlstra
2010-01-18 16:51 ` Frederic Weisbecker
2010-01-18 17:13 ` Peter Zijlstra
2010-01-18 17:29 ` Frederic Weisbecker
2010-01-18 20:01 ` Peter Zijlstra
2010-01-19 12:22 ` Peter Zijlstra
2010-01-19 13:24 ` Peter Zijlstra
2010-01-19 15:55 ` Frederic Weisbecker
2010-01-19 16:25 ` Peter Zijlstra
2010-02-27 17:38 ` Frederic Weisbecker
2010-01-19 15:40 ` Frederic Weisbecker
2010-01-21 10:08 ` Stephane Eranian
2010-01-21 10:11 ` Peter Zijlstra
2010-01-21 10:21 ` Stephane Eranian
2010-01-21 10:28 ` Peter Zijlstra
2010-01-21 10:38 ` Stephane Eranian
2010-01-21 10:45 ` Frederic Weisbecker
2010-01-21 11:44 ` Stephane Eranian
2010-01-21 12:02 ` Frederic Weisbecker
2010-01-18 14:37 ` Peter Zijlstra
2010-01-18 14:53 ` Frederic Weisbecker
2010-01-18 14:59 ` Peter Zijlstra
2010-01-18 16:22 ` Frederic Weisbecker [this message]
2010-01-21 10:36 ` Peter Zijlstra
2010-01-21 10:43 ` Stephane Eranian
2010-01-21 10:46 ` Peter Zijlstra
2010-01-21 14:06 ` Stephane Eranian
2010-01-21 13:55 ` [tip:perf/urgent] perf: x86: Add support for the ANY bit tip-bot for Stephane Eranian
2010-01-29 9:26 ` [tip:perf/core] perf_events, x86: Improve x86 event scheduling tip-bot for Stephane Eranian
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