--- old/src/hotspot/share/gc/parallel/generationSizer.cpp	2018-02-20 23:17:43.484712451 +0100
+++ new/src/hotspot/share/gc/parallel/generationSizer.cpp	2018-02-20 23:17:43.256704657 +0100
@@ -23,47 +23,3 @@
  */
 
 #include "precompiled.hpp"
-#include "gc/parallel/generationSizer.hpp"
-#include "gc/shared/collectorPolicy.hpp"
-#include "runtime/globals_extension.hpp"
-#include "utilities/align.hpp"
-#include "utilities/globalDefinitions.hpp"
-
-void GenerationSizer::initialize_alignments() {
-  _space_alignment = _gen_alignment = default_gen_alignment();
-  _heap_alignment = compute_heap_alignment();
-}
-
-void GenerationSizer::initialize_flags() {
-  // Do basic sizing work
-  GenCollectorPolicy::initialize_flags();
-
-  // The survivor ratio's are calculated "raw", unlike the
-  // default gc, which adds 2 to the ratio value. We need to
-  // make sure the values are valid before using them.
-  if (MinSurvivorRatio < 3) {
-    FLAG_SET_ERGO(uintx, MinSurvivorRatio, 3);
-  }
-
-  if (InitialSurvivorRatio < 3) {
-    FLAG_SET_ERGO(uintx, InitialSurvivorRatio, 3);
-  }
-}
-
-void GenerationSizer::initialize_size_info() {
-  const size_t max_page_sz = os::page_size_for_region_aligned(_max_heap_byte_size, 8);
-  const size_t min_pages = 4; // 1 for eden + 1 for each survivor + 1 for old
-  const size_t min_page_sz = os::page_size_for_region_aligned(_min_heap_byte_size, min_pages);
-  const size_t page_sz = MIN2(max_page_sz, min_page_sz);
-
-  // Can a page size be something else than a power of two?
-  assert(is_power_of_2((intptr_t)page_sz), "must be a power of 2");
-  size_t new_alignment = align_up(page_sz, _gen_alignment);
-  if (new_alignment != _gen_alignment) {
-    _gen_alignment = new_alignment;
-    _space_alignment = new_alignment;
-    // Redo everything from the start
-    initialize_flags();
-  }
-  GenCollectorPolicy::initialize_size_info();
-}