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: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Arnaldo 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: Ingo Molnar <mingo@elte.hu>
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 845ded8..e7d91f9 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -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 @@
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 @@
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 @@
ratio = 1000.0 * avg / total;
fprintf(stderr, " # %8.3f M/sec ", ratio);
+ } else {
+ fprintf(stderr, " ");
}
}