linux-kernel - Re: Add top down metrics to perf stat

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Date:	Fri, 20 May 2016 07:18:48 -0700
From:	Andi Kleen <andi@...stfloor.org>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	Andi Kleen <andi@...stfloor.org>, acme@...nel.org,
	peterz@...radead.org, jolsa@...nel.org, mingo@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: Add top down metrics to perf stat

> [jolsa@...-x3650m4-01 perf]$ sudo ./perf stat --topdown -I 1000 -a
> nmi_watchdog enabled with topdown. May give wrong results.
> Disable with echo 0 > /proc/sys/kernel/nmi_watchdog
>      1.002097350                   retiring             bad speculation      frontend bound       backend bound        
>      1.002097350 S0-C0           2     38.1%                0.0%               59.2%                2.7%           
>      1.002097350 S0-C1           2     38.1%                0.1%               59.7%                2.1%           

Ah I see now. this is --metric-only not displaying. --topdown enables
--metric-only implicitely.

I'll send a separate patch for that because metric only was already
merged separately. So it's not really a problem in this patchkit,
but in a previous one.

-Andi
-- 
ak@...ux.intel.com -- Speaking for myself only.