Mercurial > hg > truffle
diff src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp @ 1356:56507bcd639e
6937160: G1: should observe GCTimeRatio
Summary: Remove the G1GCPercent parameter, that specifies the desired GC overhead percentage in G1, and observe the GCTimeRatio parameter instead.
Reviewed-by: jmasa, johnc
| author | tonyp |
|---|---|
| date | Tue, 30 Mar 2010 15:36:55 -0400 |
| parents | a1c410de27e4 |
| children | 23b1b27ac76c |
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--- a/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp Thu Apr 01 20:48:50 2010 -0400 +++ b/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp Tue Mar 30 15:36:55 2010 -0400 @@ -198,7 +198,9 @@ _recorded_survivor_regions(0), _recorded_survivor_head(NULL), _recorded_survivor_tail(NULL), - _survivors_age_table(true) + _survivors_age_table(true), + + _gc_overhead_perc(0.0) { // Set up the region size and associated fields. Given that the @@ -275,6 +277,11 @@ // calculate_young_list_target_config during initialization _max_survivor_regions = G1FixedSurvivorSpaceSize / HeapRegion::GrainBytes; + assert(GCTimeRatio > 0, + "we should have set it to a default value set_g1_gc_flags() " + "if a user set it to 0"); + _gc_overhead_perc = 100.0 * (1.0 / (1.0 + GCTimeRatio)); + initialize_all(); } @@ -2288,7 +2295,7 @@ } size_t G1CollectorPolicy::expansion_amount() { - if ((int)(recent_avg_pause_time_ratio() * 100.0) > G1GCPercent) { + if ((recent_avg_pause_time_ratio() * 100.0) > _gc_overhead_perc) { // We will double the existing space, or take // G1ExpandByPercentOfAvailable % of the available expansion // space, whichever is smaller, bounded below by a minimum