Track how much we miss the idle notification limit

src/counters.h

Index: src/counters.h
diff --git a/src/counters.h b/src/counters.h
index ed9f8a89aeb17115e90f17d6b629eae2c520908d..9b44435d782dc1cd545d06a2c220ef451f7c8b46 100644
--- a/src/counters.h
+++ b/src/counters.h
@@ -291,9 +291,11 @@ class HistogramTimerScope BASE_EMBEDDED {
 #endif
 };
 
-#define HISTOGRAM_RANGE_LIST(HR) \
-  /* Generic range histograms */ \
-  HR(gc_idle_time_allotted_in_ms, V8.GCIdleTimeAllottedInMS, 0, 10000, 101)
+#define HISTOGRAM_RANGE_LIST(HR)                                             \
+  /* Generic range histograms */                                             \
+  HR(gc_idle_time_allotted_in_ms, V8.GCIdleTimeAllottedInMS, 0, 10000, 101)  \
+  HR(gc_idle_time_limit_exceeded, V8.GCIdleTimeLimitExceeded, 0, 10000, 101) \

[Hannes Payer (out of office), 2014/09/16 14:29:34]

For me, overshot and undershot would be clearer. Exceeded is fine but missed is
so overloaded.

+  HR(gc_idle_time_limit_missed, V8.GCIdleTimeLimitMissed, 0, 10000, 101)
 
 #define HISTOGRAM_TIMER_LIST(HT)                             \
   /* Garbage collection timers. */                           \