1.1 --- a/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp Thu Apr 01 20:48:50 2010 -0400
1.2 +++ b/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp Tue Mar 30 15:36:55 2010 -0400
1.3 @@ -198,7 +198,9 @@
1.4 _recorded_survivor_regions(0),
1.5 _recorded_survivor_head(NULL),
1.6 _recorded_survivor_tail(NULL),
1.7 - _survivors_age_table(true)
1.8 + _survivors_age_table(true),
1.9 +
1.10 + _gc_overhead_perc(0.0)
1.11
1.12 {
1.13 // Set up the region size and associated fields. Given that the
1.14 @@ -275,6 +277,11 @@
1.15 // calculate_young_list_target_config during initialization
1.16 _max_survivor_regions = G1FixedSurvivorSpaceSize / HeapRegion::GrainBytes;
1.17
1.18 + assert(GCTimeRatio > 0,
1.19 + "we should have set it to a default value set_g1_gc_flags() "
1.20 + "if a user set it to 0");
1.21 + _gc_overhead_perc = 100.0 * (1.0 / (1.0 + GCTimeRatio));
1.22 +
1.23 initialize_all();
1.24 }
1.25
1.26 @@ -2288,7 +2295,7 @@
1.27 }
1.28
1.29 size_t G1CollectorPolicy::expansion_amount() {
1.30 - if ((int)(recent_avg_pause_time_ratio() * 100.0) > G1GCPercent) {
1.31 + if ((recent_avg_pause_time_ratio() * 100.0) > _gc_overhead_perc) {
1.32 // We will double the existing space, or take
1.33 // G1ExpandByPercentOfAvailable % of the available expansion
1.34 // space, whichever is smaller, bounded below by a minimum
