From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1755483Ab0ENGXa (ORCPT <rfc822;w@1wt.eu>);
	Fri, 14 May 2010 02:23:30 -0400
Received: from mail-pz0-f204.google.com ([209.85.222.204]:48656 "EHLO
	mail-pz0-f204.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1755368Ab0ENGX2 convert rfc822-to-8bit (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Fri, 14 May 2010 02:23:28 -0400
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=mime-version:in-reply-to:references:date:message-id:subject:from:to
         :cc:content-type:content-transfer-encoding;
        b=lx974eAimV2pnvpQx1URby3SHHdixF/U2Q/qQtrS5c/m4S6T+1II4DhU8WhiecyMKK
         6ZN1O34CLopqE6WCBPH0AOrykoxqSWt7UYThuPXEAZIOOdXnlkTY5e+PNBRMVFfVIrJY
         /d8LtmUQ6LxA1ytpb/CiRb7jspatLJ0dJjRYo=
MIME-Version: 1.0
In-Reply-To: <AANLkTinbrhuGqHss_aML3EAccOq792GUZtqzzjQqzG6I@mail.gmail.com>
References: <AANLkTimKHkgWJJOOICzQ4TL3mbL-lvYEocwBSe3XSBVR@mail.gmail.com>
	 <AANLkTiktLXqHhop21ePIXF2kaVQbm3DIHZpLrEQOMA1e@mail.gmail.com>
	 <AANLkTimCjt0R7A23xTrmToTqTcF4ZW4sNWtjMwjVIVqe@mail.gmail.com>
	 <AANLkTinbrhuGqHss_aML3EAccOq792GUZtqzzjQqzG6I@mail.gmail.com>
Date: Fri, 14 May 2010 10:23:27 +0400
Message-ID: <AANLkTimVmlPfRFu8Wo2KL1pyF6qtTSQriawvrKcsMe9Y@mail.gmail.com>
Subject: Re: Performance Events hangs with Intel P4 system
From: Cyrill Gorcunov <gorcunov@gmail.com>
To: Jaswinder Singh Rajput <jaswinderlinux@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       Lin Ming <ming.m.lin@intel.com>
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 8BIT
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Friday, May 14, 2010, Cyrill Gorcunov <gorcunov@gmail.com> wrote:
> On Friday, May 14, 2010, Jaswinder Singh Rajput
> <jaswinderlinux@gmail.com> wrote:
>> Hello Cyrill,
>>
>> On Fri, May 14, 2010 at 8:49 AM, Cyrill Gorcunov <gorcunov@gmail.com> wrote:
>>> On Friday, May 14, 2010, Jaswinder Singh Rajput
>>> <jaswinderlinux@gmail.com> wrote:
>>>> Hello,
>>>>
>>>> I am testing Performance Events on P4 with HT:
>>>>
>>>> [    0.002243] Performance Events: Netburst events, Netburst P4/Xeon PMU driver.
>>>> [    0.002432] ... version:                0
>>>> [    0.002545] ... bit width:              40
>>>> [    0.002659] ... generic registers:      18
>>>> [    0.002772] ... value mask:             000000ffffffffff
>>>> [    0.002887] ... max period:             0000007fffffffff
>>>> [    0.003004] ... fixed-purpose events:   0
>>>> [    0.003118] ... event mask:             000000000003ffff
>>>>
>>>> dmesg : http://userweb.kernel.org/~jaswinder/P4_HT/dmesg-2634-rc7-tip.txt
>>>> config : http://userweb.kernel.org/~jaswinder/P4_HT/config-2634-rc7-tip.txt
>>>>
>>>> [jaswinder@ht perf]$ ./perf stat -e cycles ls > /dev/null
>>>>
>>>>  Performance counter stats for 'ls':
>>>>
>>>>   <not counted>  cycles
>>>>
>>>>     0.003447053  seconds time elapsed
>>>>
>>>> [jaswinder@ht perf]$ ./perf stat -e cycles,instructions ls > /dev/null
>>>>
>>>>  Performance counter stats for 'ls':
>>>>
>>>>   <not counted>  cycles
>>>>         1862188  instructions             #      0.000 IPC    (scaled
>>>> from 54.91%)
>>>>
>>>>     0.003419230  seconds time elapsed
>>>>
>>>> [jaswinder@ht perf]$ ./perf stat -e
>>>> cycles,instructions,cache-references ls > /dev/null
>>>>
>>>> <<this dumps on screen and hangs the systems>>
>>>>
>>>> How can I fix this problem.
>>>>
>>>> Thanks,
>>>> --
>>>> Jaswinder Singh.
>>>>
>>>
>>> thanks for testing. Is there any issue in dmesg for first two perf
>>> calls before it hangs?
>>
>> There is no issue in dmesg for first two perf calls.
>>
>>> And is there a chance for screen dump (photo or
>>> netconsole)?
>>>
>>
>> Here is netconsole :
>>
>> [jaswinder@ht perf]$ ./perf stat -e
>> cycles,instructions,cache-references ls > /dev/null
>>
>> Message from syslogd@ht at May 14 09:39:32 ...
>>  kernel:[  314.908284] general protection fault: 0000 [#1] PREEMPT SMP
>>
>> Message from syslogd@ht at May 14 09:39:32 ...
>>  kernel:[  314.908296] last sysfs file:
>> /sys/class/net/eth1/statistics/collisions
>>
>> Message from syslogd@ht at May 14 09:39:32 ...
>>  kernel:[  314.908346] Process ls (pid: 2726, ti=edac2000
>> task=ed9eb240 task.ti=edac2000)
>>
>> Message from syslogd@ht at May 14 09:39:32 ...
>>  kernel:[  314.908349] Stack:
>>
>> Message from syslogd@ht at May 14 09:39:32 ...
>>  kernel:[  314.908387] Call Trace:
>>
>> Message from syslogd@ht at May 14 09:39:32 ...
>>  kernel:[  314.908549] Code: cb 89 d1 e8 89 c7 13 00 8b 75 dc 8b 45 e4
>> 8b 55 d0 23 15 68 37 58 c1 8b b6 c4 00 00 00 01 75 f0 f7 d8 8b 4d f0
>> 23 05 64 37 58 c1 <0f> 30 8b 45 dc e8 a4 63 06 00 8b 45 ec 83 c4 30 5b
>> 5e 5f 5d c3
>>
>> Message from syslogd@ht at May 14 09:39:32 ...
>>  kernel:[  thanks Jaswinder, i'll take a look, meanwhile if you get a chance to
> test latest -tip/master it would be great
>

it's found that we have problem in cache events, we're working on
that, thanks for report!