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Commit a5d243d0 authored by Ingo Molnar's avatar Ingo Molnar
Browse files

perf stat: Print stalled cycles warning colors 



Print the stalled-cycles percentage with different warning level ASCII colors,
as the percentage passes the 25%/50%/75% thresholds.

Acked-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/n/tip-e25zz44rcms7mu9az4fu5zp0@git.kernel.org


Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent f99844cb

tools/perf/builtin-stat.c

+27 −6
Original line number Diff line number Diff line
@@ -46,6 +46,7 @@ 
#include "util/evlist.h"

#include "util/evsel.h"

#include "util/debug.h"

#include "util/color.h"

#include "util/header.h"

#include "util/cpumap.h"

#include "util/thread.h"
@@ -426,6 +427,29 @@ static void nsec_printout(int cpu, struct perf_evsel *evsel, double avg) 
		fprintf(stderr, " # %8.3f CPUs utilized          ", avg / avg_stats(&walltime_nsecs_stats));

}



static void print_stalled_cycles(int cpu, struct perf_evsel *evsel __used, double avg)

{

	double total, ratio = 0.0;

	const char *color;



	total = avg_stats(&runtime_cycles_stats[cpu]);



	if (total)

		ratio = avg / total * 100.0;



	color = PERF_COLOR_NORMAL;

	if (ratio > 75.0)

		color = PERF_COLOR_RED;

	else if (ratio > 50.0)

		color = PERF_COLOR_MAGENTA;

	else if (ratio > 25.0)

		color = PERF_COLOR_YELLOW;



	fprintf(stderr, " #   ");

	color_fprintf(stderr, color, "%5.2f%%", ratio);

	fprintf(stderr, " of all cycles are idle ");

}



static void abs_printout(int cpu, struct perf_evsel *evsel, double avg)

{

	double total, ratio = 0.0;
@@ -488,12 +512,7 @@ static void abs_printout(int cpu, struct perf_evsel *evsel, double avg) 
		fprintf(stderr, " # %8.3f %% of all cache refs    ", ratio);



	} else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES)) {

		total = avg_stats(&runtime_cycles_stats[cpu]);



		if (total)

			ratio = avg / total * 100.0;



		fprintf(stderr, " #   %5.2f%% of all cycles are idle ", ratio);

		print_stalled_cycles(cpu, evsel, avg);

	} else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {

		total = avg_stats(&runtime_nsecs_stats[cpu]);
@@ -508,6 +527,8 @@ static void abs_printout(int cpu, struct perf_evsel *evsel, double avg) 
			ratio = 1000.0 * avg / total;



		fprintf(stderr, " # %8.3f M/sec                  ", ratio);

	} else {

		fprintf(stderr, "                                   ");

	}

}