linux-kernel - Re: [PATCH 10/13] perf, tools, stat: Output JSON MetricExpr metric

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Date:   Tue, 21 Mar 2017 08:45:22 -0700
From:   Andi Kleen <andi@...stfloor.org>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     Andi Kleen <andi@...stfloor.org>, acme@...nel.org,
        jolsa@...nel.org, linux-kernel@...r.kernel.org,
        Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 10/13] perf, tools, stat: Output JSON MetricExpr metric

> > % perf stat -a -I 1000 -e '{unc_p_clockticks,unc_p_freq_max_os_cycles}' --metric-only
> >      1.000127077      0.9
> >      2.000301436      0.7
> >      3.000456379      0.0
> 
> The comment above suggest I'll see 'original event as description' in this example??

Yes the latest code prints

% perf stat -a -I 1000 -e '{unc_p_clockticks,unc_p_freq_max_os_cycles}' --metric-only
#           time freq_max_os_cycles % 
     1.000234103     65.0            
     2.000478612     75.2            
     3.000681286     37.4            
     4.000847224      2.9            

-Andi