perf stat: Fix metric column header display alignment
Make the metric only display aligned.
Before:
# perf stat --topdown -I 1000
# time core cpus retiring bad speculation frontend bound backend bound
1.
000394323 S0-C0 2 37.4% 12.0% 31.4% 19.2%
1.
000394323 S0-C1 2 25.1% 9.2% 43.8% 21.9%
2.
001521204 S0-C0 2 36.4% 11.4% 32.4% 19.8%
2.
001521204 S0-C1 2 26.2% 9.4% 43.1% 21.3%
3.
001930208 S0-C0 2 35.1% 10.7% 33.6% 20.6%
3.
001930208 S0-C1 2 28.9% 10.0% 40.0% 21.1%
After:
# perf stat --topdown -I 1000
# time core cpus retiring bad speculation frontend bound backend bound
1.
000303722 S0-C0 2 34.2% 7.6% 34.2% 24.0%
1.
000303722 S0-C1 2 33.1% 6.4% 36.9% 23.6%
2.
001281055 S0-C0 2 34.6% 6.7% 36.8% 21.8%
2.
001281055 S0-C1 2 32.8% 7.1% 38.1% 22.0%
3.
001546080 S0-C0 2 39.3% 5.5% 32.7% 22.5%
3.
001546080 S0-C1 2 37.8% 6.0% 33.1% 23.1%
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <frederic@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/20180606221513.11302-6-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>