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 S1751601AbbHQTJa (ORCPT <rfc822;w@1wt.eu>);
	Mon, 17 Aug 2015 15:09:30 -0400
Received: from mga11.intel.com ([192.55.52.93]:58802 "EHLO mga11.intel.com"
	rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
	id S1750909AbbHQTJ3 (ORCPT <rfc822;linux-kernel@vger.kernel.org>);
	Mon, 17 Aug 2015 15:09:29 -0400
X-ExtLoop1: 1
X-IronPort-AV: E=Sophos;i="5.15,696,1432623600"; 
   d="scan'208";a="785501167"
Message-ID: <55D23166.8060502@intel.com>
Date: Mon, 17 Aug 2015 22:09:26 +0300
From: Adrian Hunter <adrian.hunter@intel.com>
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0
MIME-Version: 1.0
To: Arnaldo Carvalho de Melo <acme@kernel.org>
CC: Ingo Molnar <mingo@kernel.org>, linux-kernel@vger.kernel.org,
        Jiri Olsa <jolsa@redhat.com>
Subject: Re: [PATCH V8 08/25] perf tools: Add Intel BTS support
References: <1437150840-31811-1-git-send-email-adrian.hunter@intel.com> <1437150840-31811-9-git-send-email-adrian.hunter@intel.com> <20150817155243.GA30444@kernel.org> <55D21D2D.5010409@intel.com> <20150817175836.GB30444@kernel.org>
In-Reply-To: <20150817175836.GB30444@kernel.org>
Content-Type: text/plain; charset=windows-1252; format=flowed
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On 17/08/2015 8:58 p.m., Arnaldo Carvalho de Melo wrote:
> Em Mon, Aug 17, 2015 at 08:43:09PM +0300, Adrian Hunter escreveu:
>> On 17/08/2015 6:52 p.m., Arnaldo Carvalho de Melo wrote:
>>>       1.92%  usleep   [unknown]         [.] 0x00007fa0ff695086
>>>       1.60%  usleep   [unknown]         [.] 0xffffffff811c91d0
>>>       1.48%  usleep   [unknown]         [.] 0x00007fa0ffb3030d
>>>       1.24%  usleep   [unknown]         [.] 0x00007fa0ff6950c7
>
>> It is very weird that it doesn't know the dso.
>
>> I presume there is nothing unusual about the environment e.g. in a chroot or anything
>
>> What if you try a different event e.g. perf record --per-thread -e cycles sleep 1
>
> [root@zoo ~]# perf record --per-thread -e cycles sleep 1
> [ perf record: Woken up 1 times to write data ]
> [ perf record: Captured and wrote 0.014 MB perf.data (9 samples) ]
> [root@zoo ~]# perf report | grep -v ^# | head -5
>      42.57%  sleep    libc-2.20.so      [.] malloc_hook_ini
>      41.81%  sleep    [kernel.vmlinux]  [k] filemap_fault
>      14.35%  sleep    [kernel.vmlinux]  [k] flush_tlb_mm_range
>       1.18%  sleep    [kernel.vmlinux]  [k] strlcpy
>       0.09%  sleep    [kernel.vmlinux]  [k] native_write_msr_safe
> [root@zoo ~]#
>
> [root@zoo ~]# perf report --dsos libc-2.20.so | grep -v '^[#]'
>      42.57%  sleep    [.] malloc_hook_ini
>
>
> [root@zoo ~]#
>
> [root@zoo ~]# perf record --per-thread -e intel_bts// usleep 1
> [ perf record: Woken up 1 times to write data ]
> [ perf record: Captured and wrote 1.825 MB perf.data ]
> [root@zoo ~]# perf report | grep -v ^# | head -5
> Warning:
> 79074 instruction trace errors
>
>
>
>
>       2.80%  usleep   [unknown]         [.] 0x00007f48888aa061
> [root@zoo ~]#

Running out of ideas.  Can you somehow share or send me the offending perf.data file?