From: Peter Zijlstra <peterz@infradead.org>
To: Andi Kleen <andi@firstfloor.org>
Cc: Jiri Olsa <jolsa@redhat.com>, "Liang, Kan" <kan.liang@intel.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Ingo Molnar <mingo@kernel.org>,
Stephane Eranian <eranian@google.com>,
Wang Nan <wangnan0@huawei.com>,
"zheng.z.yan@intel.com" <zheng.z.yan@intel.com>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [BUG] Core2 cpu triggers hard lockup with perf test
Date: Tue, 1 Mar 2016 15:59:09 +0100 [thread overview]
Message-ID: <20160301145909.GS6356@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <20160301145105.GQ5083@two.firstfloor.org>
On Tue, Mar 01, 2016 at 03:51:05PM +0100, Andi Kleen wrote:
> > im on it.. also the patch that makes this happen just
> > enlarge the buffer for PEBS:
> >
> > 156174999dd1 perf/intel/x86: Enlarge the PEBS buffer
> >
> > but I did not find anyaPEBS buffer lenght limitations in SDM
>
> May be the easiest would be to just keep the old buffer size
> on Merom.
I would still like to know why it breaks though. Just changing code
about because it makes fail go away is never the right answer.
next prev parent reply other threads:[~2016-03-01 14:59 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-27 12:37 [BUG] Core2 cpu triggers hard lockup with perf test Jiri Olsa
2016-02-27 14:48 ` Peter Zijlstra
2016-02-27 15:46 ` Andi Kleen
2016-02-29 22:12 ` Liang, Kan
2016-03-01 6:55 ` Jiri Olsa
2016-03-01 9:17 ` Peter Zijlstra
2016-03-01 11:06 ` Jiri Olsa
2016-03-01 11:20 ` Peter Zijlstra
2016-03-01 14:51 ` Andi Kleen
2016-03-01 14:59 ` Peter Zijlstra [this message]
2016-03-01 17:17 ` Jiri Olsa
2016-03-01 17:32 ` Andi Kleen
2016-03-01 17:49 ` Peter Zijlstra
2016-03-01 18:04 ` Jiri Olsa
2016-03-01 18:14 ` Peter Zijlstra
2016-03-01 18:12 ` Peter Zijlstra
2016-03-01 19:03 ` [PATCH] perf x86: Use PAGE_SIZE for PEBS buffer size on Core2 Jiri Olsa
2016-03-08 13:15 ` [tip:perf/core] perf/x86/intel: " tip-bot for Jiri Olsa
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