linux-kernel - Re: [PATCH v3 06/11] perf, tools, stat: Support JSON metrics in perf stat

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Message-ID: <20170908190848.GK18479@tassilo.jf.intel.com>
Date:   Fri, 8 Sep 2017 12:08:48 -0700
From:   Andi Kleen <ak@...ux.intel.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Andi Kleen <andi@...stfloor.org>, jolsa@...nel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 06/11] perf, tools, stat: Support JSON metrics in perf
 stat

> > PERF_CPUID=GenuineIntel-...
> > 
> > See the mapfile.csv for valid codes
> > 
> > But it's quite a few.
> 
> yeah, I'm testing on the ones I have access and on a Skylake machine I'm having
> trouble, see below.
> [root@...enth ~]# perf stat -vv --metric-only -M Summary -a sleep 1

The problem is that your kernel is missing the msr// PMU.

It should work with a newer kernel.

I can look at better error messages.

-Andi