Re: Support standalone metrics and metric groups for perf

[Jiri Olsa]

On Thu, Aug 31, 2017 at 12:40:25PM -0700, Andi Kleen wrote:

SNIP

> 
>    % perf stat -M Summary --metric-only -a sleep 1
>     
>      Performance counter stats for 'system wide':
>     
>     Instructions                              CLKS                 CPU_Utilization      GFLOPs               SMT_2T_Utilization   Kernel_Utilization
>     317614222.0                              1392930775.0             0.0                 0.0                 0.2                 0.1
>     
>            1.001497549 seconds time elapsed
>     
>    % perf stat -M GFLOPs flops
>     
>      Performance counter stats for 'flops':
>     
>          3,999,541,471      fp_comp_ops_exe.sse_scalar_single #      1.2 GFLOPs                   (66.65%)
>                     14      fp_comp_ops_exe.sse_scalar_double                                     (66.65%)
>                      0      fp_comp_ops_exe.sse_packed_double                                     (66.67%)
>                      0      fp_comp_ops_exe.sse_packed_single                                     (66.70%)
>                      0      simd_fp_256.packed_double                                     (66.70%)
>                      0      simd_fp_256.packed_single                                     (66.67%)

looks like some events are probably crossing some
output boundaries we have:

[jolsa@krava perf]$ sudo ./perf stat -M SMT -I 1000
#           time             counts unit events
     1.000565706        408,879,985      inst_retired.any          #      0.7 CoreIPC                  (66.68%)
     1.000565706      1,120,999,114      cpu_clk_unhalted.thread_any                                     (66.68%)
     1.000565706        701,285,312      cycles                                                        (66.68%)
     1.000565706      1,148,325,740      cpu_clk_unhalted.thread_any # 574162870.0 CORE_CLKS             (66.67%)
     1.000565706        711,565,247      cpu_clk_unhalted.thread                                       (66.66%)
     1.000565706         24,057,590      cpu_clk_thread_unhalted.one_thread_active #      0.3 SMT_2T_Utilization       (66.67%)
     1.000565706         65,753,475      cpu_clk_thread_unhalted.ref_xclk_any                                     (66.67%)
^C     1.349436822         21,198,385      inst_retired.any          #      0.1 CoreIPC                  (66.70%)
     1.349436822        112,740,282      cpu_clk_unhalted.thread_any                                     (66.70%)
     1.349436822         84,509,414      cycles                                                        (66.70%)
     1.349436822        108,181,315      cpu_clk_unhalted.thread_any # 54090657.5 CORE_CLKS              (66.62%)
     1.349436822         79,700,353      cpu_clk_unhalted.thread                                       (66.61%)
     1.349436822          3,911,698      cpu_clk_thread_unhalted.one_thread_active #      0.8 SMT_2T_Utilization       (66.69%)
     1.349436822         14,739,671      cpu_clk_thread_unhalted.ref_xclk_any                                     (66.69%)


could you please check on that and maybe shift the alignment for the longest name?

thanks,
jirka