diff a/src/hotspot/share/gc/g1/g1ParScanThreadState.cpp b/src/hotspot/share/gc/g1/g1ParScanThreadState.cpp
--- a/src/hotspot/share/gc/g1/g1ParScanThreadState.cpp
+++ b/src/hotspot/share/gc/g1/g1ParScanThreadState.cpp
@@ -66,13 +66,15 @@
 {
   // We allocate number of young gen regions in the collection set plus one
   // entries, since entry 0 keeps track of surviving bytes for non-young regions.
   // We also add a few elements at the beginning and at the end in
   // an attempt to eliminate cache contention
-  size_t array_length = PADDING_ELEM_NUM + _surviving_words_length + PADDING_ELEM_NUM;
+  const size_t padding_elem_num = (DEFAULT_CACHE_LINE_SIZE / sizeof(size_t));
+  size_t array_length = padding_elem_num + _surviving_words_length + padding_elem_num;
+
   _surviving_young_words_base = NEW_C_HEAP_ARRAY(size_t, array_length, mtGC);
-  _surviving_young_words = _surviving_young_words_base + PADDING_ELEM_NUM;
+  _surviving_young_words = _surviving_young_words_base + padding_elem_num;
   memset(_surviving_young_words, 0, _surviving_words_length * sizeof(size_t));
 
   _plab_allocator = new G1PLABAllocator(_g1h->allocator());
 
   // The dest for Young is used when the objects are aged enough to