From: Peter Zijlstra <peterz@infradead.org>
To: "Metzger, Markus T" <markus.t.metzger@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"hpa@zytor.com" <hpa@zytor.com>,
"markus.t.metzger@gmail.com" <markus.t.metzger@gmail.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Paul Mackerras <paulus@samba.org>
Subject: RE: [PATCH] perf_counter: Fix a race on perf_counter_ctx
Date: Tue, 18 Aug 2009 14:59:45 +0200 [thread overview]
Message-ID: <1250600385.7583.281.camel@twins> (raw)
In-Reply-To: <1250600348.7583.280.camel@twins>
On Tue, 2009-08-18 at 14:59 +0200, Peter Zijlstra wrote:
> On Tue, 2009-08-18 at 13:49 +0100, Metzger, Markus T wrote:
> > Hi Ingo, Peter,
> >
> > Did you say that branch tracing is working for you?
> >
> > On my system, the kernel hangs.
> >
> > Could it be that it simply takes too long to copy the trace? When I set the number
> > of samples to 10, everything seems to work OK. When I increase that number to 1000,
> > the kernel is getting very slow and eventually hangs.
> >
> > I get a message "hrtimer: interrupt too slow", and I get a soft lockup bug. The rest
> > of the message log seems pretty garbled.
How many NMI/s is this generating anyway?
next prev parent reply other threads:[~2009-08-18 12:59 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-21 13:56 [patch] x86, perf_counter, bts: add bts to perf_counter Markus Metzger
2009-08-04 10:24 ` Peter Zijlstra
2009-08-04 11:14 ` Ingo Molnar
2009-08-04 11:35 ` Ingo Molnar
2009-08-05 11:10 ` Metzger, Markus T
2009-08-07 7:29 ` Metzger, Markus T
2009-08-07 8:21 ` Peter Zijlstra
2009-08-07 10:18 ` Metzger, Markus T
2009-08-07 10:29 ` Peter Zijlstra
2009-08-07 12:18 ` Metzger, Markus T
2009-08-07 13:05 ` Peter Zijlstra
2009-08-07 10:31 ` Ingo Molnar
2009-08-07 10:36 ` Ingo Molnar
2009-08-07 10:57 ` Metzger, Markus T
2009-08-07 11:17 ` Metzger, Markus T
2009-08-07 11:24 ` Ingo Molnar
2009-08-07 11:33 ` Ingo Molnar
2009-08-07 17:49 ` [PATCH] perf_counter: Fix a race on perf_counter_ctx Peter Zijlstra
2009-08-08 11:52 ` [tip:perfcounters/core] " tip-bot for Peter Zijlstra
2009-08-08 12:03 ` [PATCH] " Ingo Molnar
2009-08-10 12:33 ` Metzger, Markus T
2009-08-10 12:59 ` Peter Zijlstra
2009-08-10 13:46 ` Ingo Molnar
2009-08-11 6:33 ` Metzger, Markus T
2009-08-11 8:59 ` Metzger, Markus T
2009-08-18 12:49 ` Metzger, Markus T
2009-08-18 12:59 ` Peter Zijlstra
2009-08-18 12:59 ` Peter Zijlstra [this message]
2009-08-18 13:20 ` Metzger, Markus T
2009-08-18 13:37 ` Peter Zijlstra
2009-08-18 13:54 ` Metzger, Markus T
2009-08-18 14:00 ` Ingo Molnar
2009-08-18 14:15 ` Metzger, Markus T
2009-08-28 9:56 ` Metzger, Markus T
2009-09-01 11:17 ` [discuss] BTS overflow handling, was: " Metzger, Markus T
2009-09-01 13:00 ` Peter Zijlstra
2009-09-01 13:09 ` Ingo Molnar
2009-09-01 13:32 ` Metzger, Markus T
2009-09-01 13:53 ` Peter Zijlstra
2009-09-01 14:27 ` Metzger, Markus T
2009-09-01 14:35 ` Peter Zijlstra
2009-09-03 14:25 ` Metzger, Markus T
2009-08-18 14:01 ` Peter Zijlstra
2009-08-18 14:19 ` Metzger, Markus T
2009-08-09 11:10 ` [tip:perfcounters/core] " tip-bot for Peter Zijlstra
2009-08-07 11:26 ` [patch] x86, perf_counter, bts: add bts to perf_counter Ingo Molnar
2009-08-07 11:29 ` Ingo Molnar
2009-08-07 12:14 ` Metzger, Markus T
2009-08-07 11:19 ` Ingo Molnar
2009-08-07 11:34 ` Metzger, Markus T
2009-08-07 11:37 ` Metzger, Markus T
2009-08-04 11:37 ` [tip:perfcounters/urgent] x86, perf_counter, bts: Add BTS support to perfcounters tip-bot for Markus Metzger
2009-08-07 10:10 ` [tip:perfcounters/core] " tip-bot for Markus Metzger
2009-08-08 11:43 ` tip-bot for Markus Metzger
2009-08-08 11:53 ` tip-bot for Markus Metzger
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