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comparison src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp @ 595:3698e8f47799

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6804746: G1: guarantee(variance() > -1.0,"variance should be >= 0") (due to evacuation failure) Summary: Under certain circumstances (evacuation failure) the pause time is not communicated to the policy and, as a result, the pause time field is not initialized properly. Reviewed-by: jmasa
author tonyp
date Tue, 24 Feb 2009 15:50:23 -0500
parents 1e458753107d
children 7bb995fbd3c0 6c4cea9bfa11
comparison
equal deleted inserted replaced
582:a0576ae7045f 595:3698e8f47799
1012 1012
1013 checkpoint_conc_overhead(); 1013 checkpoint_conc_overhead();
1014 1014
1015 _all_full_gc_times_ms->add(full_gc_time_ms); 1015 _all_full_gc_times_ms->add(full_gc_time_ms);
1016 1016
1017 update_recent_gc_times(end_sec, full_gc_time_sec); 1017 update_recent_gc_times(end_sec, full_gc_time_ms);
1018 1018
1019 _g1->clear_full_collection(); 1019 _g1->clear_full_collection();
1020 1020
1021 // "Nuke" the heuristics that control the fully/partially young GC 1021 // "Nuke" the heuristics that control the fully/partially young GC
1022 // transitions and make sure we start with fully young GCs after the 1022 // transitions and make sure we start with fully young GCs after the
1473 size_t rs_size = 1473 size_t rs_size =
1474 _cur_collection_pause_used_regions_at_start - collection_set_size(); 1474 _cur_collection_pause_used_regions_at_start - collection_set_size();
1475 size_t cur_used_bytes = _g1->used(); 1475 size_t cur_used_bytes = _g1->used();
1476 assert(cur_used_bytes == _g1->recalculate_used(), "It should!"); 1476 assert(cur_used_bytes == _g1->recalculate_used(), "It should!");
1477 bool last_pause_included_initial_mark = false; 1477 bool last_pause_included_initial_mark = false;
1478 bool update_stats = !abandoned && !_g1->evacuation_failed();
1478 1479
1479 #ifndef PRODUCT 1480 #ifndef PRODUCT
1480 if (G1YoungSurvRateVerbose) { 1481 if (G1YoungSurvRateVerbose) {
1481 gclog_or_tty->print_cr(""); 1482 gclog_or_tty->print_cr("");
1482 _short_lived_surv_rate_group->print(); 1483 _short_lived_surv_rate_group->print();
1533 (double)surviving_bytes/ 1534 (double)surviving_bytes/
1534 (double)_collection_set_bytes_used_before; 1535 (double)_collection_set_bytes_used_before;
1535 1536
1536 _n_pauses++; 1537 _n_pauses++;
1537 1538
1538 if (!abandoned) { 1539 if (update_stats) {
1539 _recent_CH_strong_roots_times_ms->add(_cur_CH_strong_roots_dur_ms); 1540 _recent_CH_strong_roots_times_ms->add(_cur_CH_strong_roots_dur_ms);
1540 _recent_G1_strong_roots_times_ms->add(_cur_G1_strong_roots_dur_ms); 1541 _recent_G1_strong_roots_times_ms->add(_cur_G1_strong_roots_dur_ms);
1541 _recent_evac_times_ms->add(evac_ms); 1542 _recent_evac_times_ms->add(evac_ms);
1542 _recent_pause_times_ms->add(elapsed_ms); 1543 _recent_pause_times_ms->add(elapsed_ms);
1543 1544
1634 double scan_rs_time = avg_value(_par_last_scan_rs_times_ms); 1635 double scan_rs_time = avg_value(_par_last_scan_rs_times_ms);
1635 double obj_copy_time = avg_value(_par_last_obj_copy_times_ms); 1636 double obj_copy_time = avg_value(_par_last_obj_copy_times_ms);
1636 double termination_time = avg_value(_par_last_termination_times_ms); 1637 double termination_time = avg_value(_par_last_termination_times_ms);
1637 1638
1638 double parallel_other_time; 1639 double parallel_other_time;
1639 if (!abandoned) { 1640 if (update_stats) {
1640 MainBodySummary* body_summary = summary->main_body_summary(); 1641 MainBodySummary* body_summary = summary->main_body_summary();
1641 guarantee(body_summary != NULL, "should not be null!"); 1642 guarantee(body_summary != NULL, "should not be null!");
1642 1643
1643 if (_satb_drain_time_set) 1644 if (_satb_drain_time_set)
1644 body_summary->record_satb_drain_time_ms(_cur_satb_drain_time_ms); 1645 body_summary->record_satb_drain_time_ms(_cur_satb_drain_time_ms);
1850 _short_lived_surv_rate_group->start_adding_regions(); 1851 _short_lived_surv_rate_group->start_adding_regions();
1851 // do that for any other surv rate groupsx 1852 // do that for any other surv rate groupsx
1852 1853
1853 // <NEW PREDICTION> 1854 // <NEW PREDICTION>
1854 1855
1855 if (!popular && !abandoned) { 1856 if (!popular && update_stats) {
1856 double pause_time_ms = elapsed_ms; 1857 double pause_time_ms = elapsed_ms;
1857 1858
1858 size_t diff = 0; 1859 size_t diff = 0;
1859 if (_max_pending_cards >= _pending_cards) 1860 if (_max_pending_cards >= _pending_cards)
1860 diff = _max_pending_cards - _pending_cards; 1861 diff = _max_pending_cards - _pending_cards;