Mercurial > hg > truffle
diff src/share/vm/gc_implementation/g1/g1CollectorPolicy.hpp @ 3823:14a2fd14c0db
7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark
Summary: In root processing, move the scanning of the reference processor's discovered lists to before RSet updating and scanning. When scanning the reference processor's discovered lists, use a buffering closure so that the time spent copying any reference object is correctly attributed. Also removed a couple of unused and irrelevant timers.
Reviewed-by: ysr, jmasa
| author | johnc |
|---|---|
| date | Mon, 01 Aug 2011 10:04:28 -0700 |
| parents | 053d84a76d3d |
| children | f44782f04dd4 |
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--- a/src/share/vm/gc_implementation/g1/g1CollectorPolicy.hpp Sat Jul 23 10:42:20 2011 -0400 +++ b/src/share/vm/gc_implementation/g1/g1CollectorPolicy.hpp Mon Aug 01 10:04:28 2011 -0700 @@ -129,15 +129,9 @@ jlong _num_cc_clears; // number of times the card count cache has been cleared #endif - double _cur_CH_strong_roots_end_sec; - double _cur_CH_strong_roots_dur_ms; - double _cur_G1_strong_roots_end_sec; - double _cur_G1_strong_roots_dur_ms; + // Statistics for recent GC pauses. See below for how indexed. + TruncatedSeq* _recent_rs_scan_times_ms; - // Statistics for recent GC pauses. See below for how indexed. - TruncatedSeq* _recent_CH_strong_roots_times_ms; - TruncatedSeq* _recent_G1_strong_roots_times_ms; - TruncatedSeq* _recent_evac_times_ms; // These exclude marking times. TruncatedSeq* _recent_pause_times_ms; TruncatedSeq* _recent_gc_times_ms; @@ -692,17 +686,11 @@ // The average time in ms per collection pause, averaged over recent pauses. double recent_avg_time_for_pauses_ms(); - // The average time in ms for processing CollectedHeap strong roots, per - // collection pause, averaged over recent pauses. - double recent_avg_time_for_CH_strong_ms(); - - // The average time in ms for processing the G1 remembered set, per - // pause, averaged over recent pauses. - double recent_avg_time_for_G1_strong_ms(); - - // The average time in ms for "evacuating followers", per pause, averaged - // over recent pauses. - double recent_avg_time_for_evac_ms(); + // The average time in ms for RS scanning, per pause, averaged + // over recent pauses. (Note the RS scanning time for a pause + // is itself an average of the RS scanning time for each worker + // thread.) + double recent_avg_time_for_rs_scan_ms(); // The number of "recent" GCs recorded in the number sequences int number_of_recent_gcs(); @@ -887,9 +875,6 @@ virtual void record_concurrent_pause(); virtual void record_concurrent_pause_end(); - virtual void record_collection_pause_end_CH_strong_roots(); - virtual void record_collection_pause_end_G1_strong_roots(); - virtual void record_collection_pause_end(); void print_heap_transition();