src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp

@@ -617,11 +617,11 @@
   }
 
   // Support for parallelizing survivor space rescan
   if ((CMSParallelRemarkEnabled && CMSParallelSurvivorRemarkEnabled) || CMSParallelInitialMarkEnabled) {
     const size_t max_plab_samples =
-      ((DefNewGeneration*)_young_gen)->max_survivor_size() / plab_sample_minimum_size();
+      ((DefNewGeneration*)_young_gen)->max_survivor_size() / YoungPLABSize;
 
     _survivor_plab_array  = NEW_C_HEAP_ARRAY(ChunkArray, ParallelGCThreads, mtGC);
     _survivor_chunk_array = NEW_C_HEAP_ARRAY(HeapWord*, 2*max_plab_samples, mtGC);
     _cursor               = NEW_C_HEAP_ARRAY(size_t, ParallelGCThreads, mtGC);
     _survivor_chunk_capacity = 2*max_plab_samples;

@@ -638,16 +638,10 @@
   _gc_counters = new CollectorCounters("CMS", 1);
   _completed_initialization = true;
   _inter_sweep_timer.start();  // start of time
 }
 
-size_t CMSCollector::plab_sample_minimum_size() {
-  // The default value of MinTLABSize is 2k, but there is
-  // no way to get the default value if the flag has been overridden.
-  return MAX2(ThreadLocalAllocBuffer::min_size() * HeapWordSize, 2 * K);
-}
-
 const char* ConcurrentMarkSweepGeneration::name() const {
   return "concurrent mark-sweep generation";
 }
 void ConcurrentMarkSweepGeneration::update_counters() {
   if (UsePerfData) {