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Date: Fri, 14 May 2010 20:28:13 +0400
From: Cyrill Gorcunov <gorcunov@gmail.com>
To: Jaswinder Singh Rajput <jaswinderlinux@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>, Lin Ming <ming.m.lin@intel.com>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       Peter Zijlstra <a.p.zijlstra@chello.nl>,
       Frederic Weisbecker <fweisbec@gmail.com>
Subject: Re: Performance Events hangs with Intel P4 system
Message-ID: <20100514162813.GB13509@lenovo>
References: <AANLkTinbrhuGqHss_aML3EAccOq792GUZtqzzjQqzG6I@mail.gmail.com> <AANLkTimVmlPfRFu8Wo2KL1pyF6qtTSQriawvrKcsMe9Y@mail.gmail.com> <AANLkTimrHGq1kZwPev7gBZu6Hqxlhe0ZscSKjEinZtcf@mail.gmail.com> <AANLkTik-gIjZu60pFWEhhe8MolQITrtk0wfpvSUCLnrD@mail.gmail.com> <AANLkTinPcjUyPyUP4L7opELEbLZy-tXxkbm-nqe8Co0f@mail.gmail.com> <1273834571.3530.82.camel@minggr.sh.intel.com> <20100514115655.GA18069@elte.hu> <20100514135240.GA4952@lenovo> <20100514145213.GA13509@lenovo> <AANLkTik6rwpU665xKUWfaOhV-h3Xgm_xeSiXH0Ax-n2u@mail.gmail.com>
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On Fri, May 14, 2010 at 09:52:28PM +0530, Jaswinder Singh Rajput wrote:
... 
> Yes, this works for me. Now I am not getting general protection fault.
> 
> It seems hardware events are not supported for P4 yet.
> 
> $ ./perf stat -e
> cycles,instructions,cache-references,cache-misses,branches,branch-misses,bus-cycles
> ls > /dev/null
> 
>  Performance counter stats for 'ls':
> 
>   <not counted>  cycles
>          601636  instructions             #      0.000 IPC    (scaled
> from 91.80%)
>   <not counted>  cache-references
>   <not counted>  cache-misses
>   <not counted>  branches
>   <not counted>  branch-misses
>   <not counted>  bus-cycles
> 
>     0.003364910  seconds time elapsed

Thanks Jaswinder,

it means counters management somehow screwed at moment (it was working before).
I'm working on it.

	-- Cyrill