From: Ingo Molnar <mingo@elte.hu>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: linux-kernel@vger.kernel.org, Paul Mackerras <paulus@samba.org>,
Mike Galbraith <efault@gmx.de>,
Arjan van de Ven <arjan@infradead.org>,
Wu Fengguang <fengguang.wu@intel.com>
Subject: Re: [PATCH 5/6] perf_counter: kerneltop: mmap_pages argument
Date: Wed, 25 Mar 2009 13:18:11 +0100 [thread overview]
Message-ID: <20090325121811.GC11571@elte.hu> (raw)
In-Reply-To: <20090325113317.104545398@chello.nl>
* Peter Zijlstra <a.p.zijlstra@chello.nl> wrote:
> provide a knob to set the number of mmap data pages.
> + " -m pages --mmap_pages=<pages> # number of mmap data pages\n"
Btw., we really want this to be auto-tuning to a large degree. If
the kernel observes missed events, it should create a
PERF_EVENT_OVERFLOW==0x3 record, with the number of missed events -
or something like that.
Ingo
next prev parent reply other threads:[~2009-03-25 12:18 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-25 11:30 [PATCH 0/6] perf_counter: new output ABI Peter Zijlstra
2009-03-25 11:30 ` [PATCH 1/6] perf_counter: more elaborate write API Peter Zijlstra
2009-03-25 12:06 ` [tip:perfcounters/core] " Peter Zijlstra
2009-03-25 11:30 ` [PATCH 2/6] perf_counter: output objects Peter Zijlstra
2009-03-25 12:06 ` [tip:perfcounters/core] " Peter Zijlstra
2009-03-25 11:30 ` [PATCH 3/6] perf_counter: sanity check on the output API Peter Zijlstra
2009-03-25 12:06 ` [tip:perfcounters/core] " Peter Zijlstra
2009-03-25 11:30 ` [PATCH 4/6] perf_counter: optionally provide the pid/tid of the sampled task Peter Zijlstra
2009-03-25 12:06 ` [tip:perfcounters/core] " Peter Zijlstra
2009-03-25 11:30 ` [PATCH 5/6] perf_counter: kerneltop: mmap_pages argument Peter Zijlstra
2009-03-25 12:07 ` [tip:perfcounters/core] " Peter Zijlstra
2009-03-25 12:18 ` Ingo Molnar [this message]
2009-03-25 12:27 ` [PATCH 5/6] " Peter Zijlstra
2009-03-25 12:35 ` Ingo Molnar
2009-03-25 12:41 ` Peter Zijlstra
2009-03-25 12:54 ` Ingo Molnar
2009-03-25 12:57 ` Peter Zijlstra
2009-03-25 14:52 ` Peter Zijlstra
2009-03-25 17:16 ` Ingo Molnar
2009-03-25 21:18 ` Peter Zijlstra
2009-03-26 2:22 ` Paul Mackerras
2009-03-25 11:30 ` [PATCH 6/6] perf_counter: kerneltop: output event support Peter Zijlstra
2009-03-25 12:07 ` [tip:perfcounters/core] " Peter Zijlstra
2009-04-04 0:21 ` [PATCH 6/6] " Corey Ashford
2009-04-04 12:17 ` Peter Zijlstra
2009-04-04 18:10 ` Corey Ashford
2009-03-25 12:05 ` [PATCH 0/6] perf_counter: new output ABI Ingo Molnar
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