--- a/hotspot/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp Tue Nov 10 11:32:48 2009 -0800
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp Fri Nov 13 11:55:26 2009 -0800
@@ -1516,8 +1516,31 @@
(end_time_sec - _recent_prev_end_times_for_all_gcs_sec->oldest()) * 1000.0;
update_recent_gc_times(end_time_sec, elapsed_ms);
_recent_avg_pause_time_ratio = _recent_gc_times_ms->sum()/interval_ms;
- // using 1.01 to account for floating point inaccuracies
- assert(recent_avg_pause_time_ratio() < 1.01, "All GC?");
+ if (recent_avg_pause_time_ratio() < 0.0 ||
+ (recent_avg_pause_time_ratio() - 1.0 > 0.0)) {
+#ifndef PRODUCT
+ // Dump info to allow post-facto debugging
+ gclog_or_tty->print_cr("recent_avg_pause_time_ratio() out of bounds");
+ gclog_or_tty->print_cr("-------------------------------------------");
+ gclog_or_tty->print_cr("Recent GC Times (ms):");
+ _recent_gc_times_ms->dump();
+ gclog_or_tty->print_cr("(End Time=%3.3f) Recent GC End Times (s):", end_time_sec);
+ _recent_prev_end_times_for_all_gcs_sec->dump();
+ gclog_or_tty->print_cr("GC = %3.3f, Interval = %3.3f, Ratio = %3.3f",
+ _recent_gc_times_ms->sum(), interval_ms, recent_avg_pause_time_ratio());
+ // TEMPORARY: In debug mode, terminate the JVM, so nightly testing explicitly
+ // flags the sighting by failing the test.
+ assert(false, "Debugging data for CR 6898948 has been dumped above");
+#else // PRODUCT
+ // Clip ratio between 0.0 and 1.0
+ if (_recent_avg_pause_time_ratio < 0.0) {
+ _recent_avg_pause_time_ratio = 0.0;
+ } else {
+ assert(_recent_avg_pause_time_ratio - 1.0 > 0.0, "Ctl-point invariant");
+ _recent_avg_pause_time_ratio = 1.0;
+ }
+#endif // PRODUCT
+ }
}
if (G1PolicyVerbose > 1) {