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8019902: G1: Use the average heap size rather than the minimum heap size to calculate the region size

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Reviewed-by: tonyp, tschatzl, sjohanss
This commit is contained in:
Bengt Rutisson 2013-08-30 07:31:47 +02:00
parent 728a40bcdc
commit 6d7626dba4
3 changed files with 13 additions and 12 deletions
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10
hotspot/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp
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@ -168,7 +168,15 @@ G1CollectorPolicy::G1CollectorPolicy() :
// Set up the region size and associated fields. Given that the
// policy is created before the heap, we have to set this up here,
// so it's done as soon as possible.
HeapRegion::setup_heap_region_size(Arguments::min_heap_size());
// It would have been natural to pass initial_heap_byte_size() and
// max_heap_byte_size() to setup_heap_region_size() but those have
// not been set up at this point since they should be aligned with
// the region size. So, there is a circular dependency here. We base
// the region size on the heap size, but the heap size should be
// aligned with the region size. To get around this we use the
// unaligned values for the heap.
HeapRegion::setup_heap_region_size(InitialHeapSize, MaxHeapSize);
HeapRegionRemSet::setup_remset_size();
G1ErgoVerbose::initialize();