Date: Tue, 6 Dec 2016 12:16:15 +0100
From: Jiri Olsa <jolsa@redhat.com>
To: kan.liang@intel.com
Cc: peterz@infradead.org, mingo@redhat.com, acme@kernel.org,
        linux-kernel@vger.kernel.org, alexander.shishkin@linux.intel.com,
        tglx@linutronix.de, namhyung@kernel.org, jolsa@kernel.org,
        adrian.hunter@intel.com, wangnan0@huawei.com, mark.rutland@arm.com,
        andi@firstfloor.org
Subject: Re: [PATCH V2 08/13] perf tools: show kernel overhead
Message-ID: <20161206111615.GB7730@krava>
References: <1480713561-6617-1-git-send-email-kan.liang@intel.com>
 <1480713561-6617-9-git-send-email-kan.liang@intel.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <1480713561-6617-9-git-send-email-kan.liang@intel.com>
User-Agent: Mutt/1.7.1 (2016-10-04)
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 914
Lines: 25

On Fri, Dec 02, 2016 at 04:19:16PM -0500, kan.liang@intel.com wrote:
> From: Kan Liang <kan.liang@intel.com>
> 
> The kernel overhead include sample overhead, multiplexing overhead and
> side-band events overhead. All the information is printed in the head of
> output file if the show profiling cost option is applied.
> The result is sorted by CPU. If there is no available CPU information in
> sample, using -1 instead.
> 
> Output when CPU is available
>  # To display the perf.data header info, please use
>  --header/--header-only options.
>  #
>  # ========
>  # CPU       SAM    SAM cost(ns)       MUX    MUX cost(ns)        SB
>  SB cost(ns)
>  #   0    2261446     1991216491     122174     1128716680          0

- please make this output properly alligned
- it'd be nice to see some 1000 delimitiers
- do we need to display the rest of the perf output,
  it seems too much to me already

thanks,
jirka