linux-kernel - Re: [PATCH v4 00/16] perf tool: add meta-data header support for pipe-mode

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Date:   Tue, 13 Jun 2017 23:51:43 -0700
From:   David Carrillo-Cisneros <davidcc@...gle.com>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Andi Kleen <ak@...ux.intel.com>, Simon Que <sque@...omium.org>,
        Wang Nan <wangnan0@...wei.com>, Jiri Olsa <jolsa@...nel.org>,
        He Kuang <hekuang@...wei.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Stephane Eranian <eranian@...gle.com>,
        Paul Turner <pjt@...gle.com>
Subject: Re: [PATCH v4 00/16] perf tool: add meta-data header support for pipe-mode

On Tue, Jun 13, 2017 at 11:55 AM, Jiri Olsa <jolsa@...hat.com> wrote:
> On Mon, Jun 12, 2017 at 09:29:16PM -0700, David Carrillo-Cisneros wrote:
>> v4: - Limit write_* functions to page_size.
>>     - Fixed bugs spotted by Jiri.
>>     - Add information about pipe-mode to some error messages.
>
> looks like this version breaks the normal report
>
> [jolsa@...va perf]$ ./perf report --header-only -I
> [jolsa@...va perf]$

Is the command simply terminating without any output? I cannot
reproduce it. In my machines it works:

$ ./perf report --header-only -I
# ========
# captured on: Tue Jun 13 23:49:13 2017
# hostname : lphh20
# os release : 4.3.5-smp-801.43.0.0
# perf version : 4.12.rc4.gf2978e
# arch : x86_64
# nrcpus online : 72
# nrcpus avail : 72
# cpudesc : Intel(R) Xeon(R) CPU E5-2696 v3 @ 2.30GHz
# cpuid : GenuineIntel,6,63,2
# total memory : 264134144 kB
# cmdline : /root/perf record ls
# event : name = cycles:pp, , size = 112, { sample_period, sample_freq
} = 4000, sample_type = IP|TID|TIME|PERIOD, disa
# sibling cores   : 0-17,36-53
# sibling cores   : 18-35,54-71
[SNIP]

Is your perf.data from the same version?

>
> jirka