--- a/hotspot/src/share/vm/gc_implementation/parallelScavenge/parMarkBitMap.cpp	Sun May 19 20:31:30 2013 +0200
+++ b/hotspot/src/share/vm/gc_implementation/parallelScavenge/parMarkBitMap.cpp	Mon May 20 10:44:33 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -54,18 +54,18 @@
   const size_t raw_bytes = words * sizeof(idx_t);
   const size_t page_sz = os::page_size_for_region(raw_bytes, raw_bytes, 10);
   const size_t granularity = os::vm_allocation_granularity();
-  const size_t bytes = align_size_up(raw_bytes, MAX2(page_sz, granularity));
+  _reserved_byte_size = align_size_up(raw_bytes, MAX2(page_sz, granularity));
 
   const size_t rs_align = page_sz == (size_t) os::vm_page_size() ? 0 :
     MAX2(page_sz, granularity);
-  ReservedSpace rs(bytes, rs_align, rs_align > 0);
+  ReservedSpace rs(_reserved_byte_size, rs_align, rs_align > 0);
   os::trace_page_sizes("par bitmap", raw_bytes, raw_bytes, page_sz,
                        rs.base(), rs.size());
 
   MemTracker::record_virtual_memory_type((address)rs.base(), mtGC);
 
   _virtual_space = new PSVirtualSpace(rs, page_sz);
-  if (_virtual_space != NULL && _virtual_space->expand_by(bytes)) {
+  if (_virtual_space != NULL && _virtual_space->expand_by(_reserved_byte_size)) {
     _region_start = covered_region.start();
     _region_size = covered_region.word_size();
     idx_t* map = (idx_t*)_virtual_space->reserved_low_addr();

--- a/hotspot/src/share/vm/gc_implementation/parallelScavenge/parMarkBitMap.hpp	Sun May 19 20:31:30 2013 +0200
+++ b/hotspot/src/share/vm/gc_implementation/parallelScavenge/parMarkBitMap.hpp	Mon May 20 10:44:33 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -131,6 +131,8 @@
   inline size_t    region_size() const;
   inline size_t    size() const;
 
+  size_t reserved_byte_size() const { return _reserved_byte_size; }
+
   // Convert a heap address to/from a bit index.
   inline idx_t     addr_to_bit(HeapWord* addr) const;
   inline HeapWord* bit_to_addr(idx_t bit) const;
@@ -176,10 +178,11 @@
   BitMap          _beg_bits;
   BitMap          _end_bits;
   PSVirtualSpace* _virtual_space;
+  size_t          _reserved_byte_size;
 };
 
 inline ParMarkBitMap::ParMarkBitMap():
-  _beg_bits(), _end_bits(), _region_start(NULL), _region_size(0), _virtual_space(NULL)
+  _beg_bits(), _end_bits(), _region_start(NULL), _region_size(0), _virtual_space(NULL), _reserved_byte_size(0)
 { }
 
 inline void ParMarkBitMap::clear_range(idx_t beg, idx_t end)

--- a/hotspot/src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.cpp	Sun May 19 20:31:30 2013 +0200
+++ b/hotspot/src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.cpp	Mon May 20 10:44:33 2013 -0700
@@ -356,6 +356,7 @@
   _region_start = 0;
 
   _region_vspace = 0;
+  _reserved_byte_size = 0;
   _region_data = 0;
   _region_count = 0;
 }
@@ -382,11 +383,11 @@
   const size_t raw_bytes = count * element_size;
   const size_t page_sz = os::page_size_for_region(raw_bytes, raw_bytes, 10);
   const size_t granularity = os::vm_allocation_granularity();
-  const size_t bytes = align_size_up(raw_bytes, MAX2(page_sz, granularity));
+  _reserved_byte_size = align_size_up(raw_bytes, MAX2(page_sz, granularity));
 
   const size_t rs_align = page_sz == (size_t) os::vm_page_size() ? 0 :
     MAX2(page_sz, granularity);
-  ReservedSpace rs(bytes, rs_align, rs_align > 0);
+  ReservedSpace rs(_reserved_byte_size, rs_align, rs_align > 0);
   os::trace_page_sizes("par compact", raw_bytes, raw_bytes, page_sz, rs.base(),
                        rs.size());
 
@@ -394,7 +395,7 @@
 
   PSVirtualSpace* vspace = new PSVirtualSpace(rs, page_sz);
   if (vspace != 0) {
-    if (vspace->expand_by(bytes)) {
+    if (vspace->expand_by(_reserved_byte_size)) {
       return vspace;
     }
     delete vspace;
@@ -840,14 +841,18 @@
   initialize_dead_wood_limiter();
 
   if (!_mark_bitmap.initialize(mr)) {
-    vm_shutdown_during_initialization("Unable to allocate bit map for "
-      "parallel garbage collection for the requested heap size.");
+    vm_shutdown_during_initialization(
+      err_msg("Unable to allocate " SIZE_FORMAT "KB bitmaps for parallel "
+      "garbage collection for the requested " SIZE_FORMAT "KB heap.",
+      _mark_bitmap.reserved_byte_size()/K, mr.byte_size()/K));
     return false;
   }
 
   if (!_summary_data.initialize(mr)) {
-    vm_shutdown_during_initialization("Unable to allocate tables for "
-      "parallel garbage collection for the requested heap size.");
+    vm_shutdown_during_initialization(
+      err_msg("Unable to allocate " SIZE_FORMAT "KB card tables for parallel "
+      "garbage collection for the requested " SIZE_FORMAT "KB heap.",
+      _summary_data.reserved_byte_size()/K, mr.byte_size()/K));
     return false;
   }
 

--- a/hotspot/src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.hpp	Sun May 19 20:31:30 2013 +0200
+++ b/hotspot/src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.hpp	Mon May 20 10:44:33 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -347,6 +347,7 @@
   bool initialize(MemRegion covered_region);
 
   size_t region_count() const { return _region_count; }
+  size_t reserved_byte_size() const { return _reserved_byte_size; }
 
   // Convert region indices to/from RegionData pointers.
   inline RegionData* region(size_t region_idx) const;
@@ -420,6 +421,7 @@
 #endif  // #ifdef ASSERT
 
   PSVirtualSpace* _region_vspace;
+  size_t          _reserved_byte_size;
   RegionData*     _region_data;
   size_t          _region_count;
 };