1.1 --- a/src/share/vm/gc_implementation/g1/heapRegion.cpp Tue Aug 21 10:05:57 2012 -0700
1.2 +++ b/src/share/vm/gc_implementation/g1/heapRegion.cpp Tue Aug 21 14:10:39 2012 -0700
1.3 @@ -384,10 +384,17 @@
1.4 }
1.5
1.6 void HeapRegion::calc_gc_efficiency() {
1.7 + // GC efficiency is the ratio of how much space would be
1.8 + // reclaimed over how long we predict it would take to reclaim it.
1.9 G1CollectedHeap* g1h = G1CollectedHeap::heap();
1.10 G1CollectorPolicy* g1p = g1h->g1_policy();
1.11 - _gc_efficiency = (double) reclaimable_bytes() /
1.12 - g1p->predict_region_elapsed_time_ms(this, false);
1.13 +
1.14 + // Retrieve a prediction of the elapsed time for this region for
1.15 + // a mixed gc because the region will only be evacuated during a
1.16 + // mixed gc.
1.17 + double region_elapsed_time_ms =
1.18 + g1p->predict_region_elapsed_time_ms(this, false /* for_young_gc */);
1.19 + _gc_efficiency = (double) reclaimable_bytes() / region_elapsed_time_ms;
1.20 }
1.21
1.22 void HeapRegion::set_startsHumongous(HeapWord* new_top, HeapWord* new_end) {
