--- a/make/bsd/makefiles/gcc.make	Thu Mar 07 10:46:14 2013 -0500
+++ b/make/bsd/makefiles/gcc.make	Thu Mar 07 10:39:15 2013 -0800
@@ -229,6 +229,20 @@
 CFLAGS += -DDONT_USE_PRECOMPILED_HEADER
 endif
 
+ifeq ($(OS_VENDOR), Darwin)
+  # Setting these parameters makes it an error to link to macosx APIs that are 
+  # newer than the given OS version and makes the linked binaries compatible even
+  # if built on a newer version of the OS.
+  # The expected format is X.Y.Z
+  ifeq ($(MACOSX_VERSION_MIN),)
+    MACOSX_VERSION_MIN=10.7.0
+  endif
+  # The macro takes the version with no dots, ex: 1070
+  CFLAGS += -DMAC_OS_X_VERSION_MAX_ALLOWED=$(subst .,,$(MACOSX_VERSION_MIN)) \
+            -mmacosx-version-min=$(MACOSX_VERSION_MIN)
+  LDFLAGS += -mmacosx-version-min=$(MACOSX_VERSION_MIN)
+endif
+
 #------------------------------------------------------------------------
 # Linker flags
 

--- a/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepThread.cpp	Thu Mar 07 10:46:14 2013 -0500
+++ b/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepThread.cpp	Thu Mar 07 10:39:15 2013 -0800
@@ -300,8 +300,7 @@
   }
 }
 
-// Wait until the next synchronous GC, a concurrent full gc request,
-// or a timeout, whichever is earlier.
+// Wait until any cms_lock event
 void ConcurrentMarkSweepThread::wait_on_cms_lock(long t_millis) {
   MutexLockerEx x(CGC_lock,
                   Mutex::_no_safepoint_check_flag);
@@ -315,15 +314,100 @@
          "Should not be set");
 }
 
+// Wait until the next synchronous GC, a concurrent full gc request,
+// or a timeout, whichever is earlier.
+void ConcurrentMarkSweepThread::wait_on_cms_lock_for_scavenge(long t_millis) {
+  // Wait time in millis or 0 value representing infinite wait for a scavenge
+  assert(t_millis >= 0, "Wait time for scavenge should be 0 or positive");
+
+  GenCollectedHeap* gch = GenCollectedHeap::heap();
+  double start_time_secs = os::elapsedTime();
+  double end_time_secs = start_time_secs + (t_millis / ((double) MILLIUNITS));
+
+  // Total collections count before waiting loop
+  unsigned int before_count;
+  {
+    MutexLockerEx hl(Heap_lock, Mutex::_no_safepoint_check_flag);
+    before_count = gch->total_collections();
+  }
+
+  unsigned int loop_count = 0;
+
+  while(!_should_terminate) {
+    double now_time = os::elapsedTime();
+    long wait_time_millis;
+
+    if(t_millis != 0) {
+      // New wait limit
+      wait_time_millis = (long) ((end_time_secs - now_time) * MILLIUNITS);
+      if(wait_time_millis <= 0) {
+        // Wait time is over
+        break;
+      }
+    } else {
+      // No wait limit, wait if necessary forever
+      wait_time_millis = 0;
+    }
+
+    // Wait until the next event or the remaining timeout
+    {
+      MutexLockerEx x(CGC_lock, Mutex::_no_safepoint_check_flag);
+
+      if (_should_terminate || _collector->_full_gc_requested) {
+        return;
+      }
+      set_CMS_flag(CMS_cms_wants_token);   // to provoke notifies
+      assert(t_millis == 0 || wait_time_millis > 0, "Sanity");
+      CGC_lock->wait(Mutex::_no_safepoint_check_flag, wait_time_millis);
+      clear_CMS_flag(CMS_cms_wants_token);
+      assert(!CMS_flag_is_set(CMS_cms_has_token | CMS_cms_wants_token),
+             "Should not be set");
+    }
+
+    // Extra wait time check before entering the heap lock to get the collection count
+    if(t_millis != 0 && os::elapsedTime() >= end_time_secs) {
+      // Wait time is over
+      break;
+    }
+
+    // Total collections count after the event
+    unsigned int after_count;
+    {
+      MutexLockerEx hl(Heap_lock, Mutex::_no_safepoint_check_flag);
+      after_count = gch->total_collections();
+    }
+
+    if(before_count != after_count) {
+      // There was a collection - success
+      break;
+    }
+
+    // Too many loops warning
+    if(++loop_count == 0) {
+      warning("wait_on_cms_lock_for_scavenge() has looped %u times", loop_count - 1);
+    }
+  }
+}
+
 void ConcurrentMarkSweepThread::sleepBeforeNextCycle() {
   while (!_should_terminate) {
     if (CMSIncrementalMode) {
       icms_wait();
+      if(CMSWaitDuration >= 0) {
+        // Wait until the next synchronous GC, a concurrent full gc
+        // request or a timeout, whichever is earlier.
+        wait_on_cms_lock_for_scavenge(CMSWaitDuration);
+      }
       return;
     } else {
-      // Wait until the next synchronous GC, a concurrent full gc
-      // request or a timeout, whichever is earlier.
-      wait_on_cms_lock(CMSWaitDuration);
+      if(CMSWaitDuration >= 0) {
+        // Wait until the next synchronous GC, a concurrent full gc
+        // request or a timeout, whichever is earlier.
+        wait_on_cms_lock_for_scavenge(CMSWaitDuration);
+      } else {
+        // Wait until any cms_lock event or check interval not to call shouldConcurrentCollect permanently
+        wait_on_cms_lock(CMSCheckInterval);
+      }
     }
     // Check if we should start a CMS collection cycle
     if (_collector->shouldConcurrentCollect()) {

--- a/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepThread.hpp	Thu Mar 07 10:46:14 2013 -0500
+++ b/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepThread.hpp	Thu Mar 07 10:39:15 2013 -0800
@@ -130,6 +130,12 @@
   // A concurrent full gc request terminates the wait.
   void wait_on_cms_lock(long t_millis);
 
+  // Wait on CMS lock until the next synchronous GC
+  // or given timeout, whichever is earlier. A timeout value
+  // of 0 indicates that there is no upper bound on the wait time.
+  // A concurrent full gc request terminates the wait.
+  void wait_on_cms_lock_for_scavenge(long t_millis);
+
   // The CMS thread will yield during the work portion of its cycle
   // only when requested to.  Both synchronous and asychronous requests
   // are provided:

--- a/src/share/vm/gc_implementation/g1/collectionSetChooser.cpp	Thu Mar 07 10:46:14 2013 -0500
+++ b/src/share/vm/gc_implementation/g1/collectionSetChooser.cpp	Thu Mar 07 10:39:15 2013 -0800
@@ -146,43 +146,6 @@
   verify();
 }
 
-uint CollectionSetChooser::calc_min_old_cset_length() {
-  // The min old CSet region bound is based on the maximum desired
-  // number of mixed GCs after a cycle. I.e., even if some old regions
-  // look expensive, we should add them to the CSet anyway to make
-  // sure we go through the available old regions in no more than the
-  // maximum desired number of mixed GCs.
-  //
-  // The calculation is based on the number of marked regions we added
-  // to the CSet chooser in the first place, not how many remain, so
-  // that the result is the same during all mixed GCs that follow a cycle.
-
-  const size_t region_num = (size_t) _length;
-  const size_t gc_num = (size_t) G1MixedGCCountTarget;
-  size_t result = region_num / gc_num;
-  // emulate ceiling
-  if (result * gc_num < region_num) {
-    result += 1;
-  }
-  return (uint) result;
-}
-
-uint CollectionSetChooser::calc_max_old_cset_length() {
-  // The max old CSet region bound is based on the threshold expressed
-  // as a percentage of the heap size. I.e., it should bound the
-  // number of old regions added to the CSet irrespective of how many
-  // of them are available.
-
-  G1CollectedHeap* g1h = G1CollectedHeap::heap();
-  const size_t region_num = g1h->n_regions();
-  const size_t perc = (size_t) G1OldCSetRegionThresholdPercent;
-  size_t result = region_num * perc / 100;
-  // emulate ceiling
-  if (100 * result < region_num * perc) {
-    result += 1;
-  }
-  return (uint) result;
-}
 
 void CollectionSetChooser::add_region(HeapRegion* hr) {
   assert(!hr->isHumongous(),

--- a/src/share/vm/gc_implementation/g1/collectionSetChooser.hpp	Thu Mar 07 10:46:14 2013 -0500
+++ b/src/share/vm/gc_implementation/g1/collectionSetChooser.hpp	Thu Mar 07 10:39:15 2013 -0800
@@ -51,6 +51,8 @@
   uint _curr_index;
 
   // The number of candidate old regions added to the CSet chooser.
+  // Note: this is not updated when removing a region using
+  // remove_and_move_to_next() below.
   uint _length;
 
   // Keeps track of the start of the next array chunk to be claimed by
@@ -111,13 +113,8 @@
             hr->live_bytes() < _region_live_threshold_bytes;
   }
 
-  // Calculate the minimum number of old regions we'll add to the CSet
-  // during a mixed GC.
-  uint calc_min_old_cset_length();
-
-  // Calculate the maximum number of old regions we'll add to the CSet
-  // during a mixed GC.
-  uint calc_max_old_cset_length();
+  // Returns the number candidate old regions added
+  uint length() { return _length; }
 
   // Serial version.
   void add_region(HeapRegion *hr);

--- a/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp	Thu Mar 07 10:46:14 2013 -0500
+++ b/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp	Thu Mar 07 10:39:15 2013 -0800
@@ -1806,6 +1806,14 @@
 }
 #endif // !PRODUCT
 
+double G1CollectorPolicy::reclaimable_bytes_perc(size_t reclaimable_bytes) {
+  // Returns the given amount of reclaimable bytes (that represents
+  // the amount of reclaimable space still to be collected) as a
+  // percentage of the current heap capacity.
+  size_t capacity_bytes = _g1->capacity();
+  return (double) reclaimable_bytes * 100.0 / (double) capacity_bytes;
+}
+
 bool G1CollectorPolicy::next_gc_should_be_mixed(const char* true_action_str,
                                                 const char* false_action_str) {
   CollectionSetChooser* cset_chooser = _collectionSetChooser;
@@ -1815,19 +1823,21 @@
                   ergo_format_reason("candidate old regions not available"));
     return false;
   }
+
+  // Is the amount of uncollected reclaimable space above G1HeapWastePercent?
   size_t reclaimable_bytes = cset_chooser->remaining_reclaimable_bytes();
-  size_t capacity_bytes = _g1->capacity();
-  double perc = (double) reclaimable_bytes * 100.0 / (double) capacity_bytes;
+  double reclaimable_perc = reclaimable_bytes_perc(reclaimable_bytes);
   double threshold = (double) G1HeapWastePercent;
-  if (perc < threshold) {
+  if (reclaimable_perc <= threshold) {
     ergo_verbose4(ErgoMixedGCs,
               false_action_str,
-              ergo_format_reason("reclaimable percentage lower than threshold")
+              ergo_format_reason("reclaimable percentage not over threshold")
               ergo_format_region("candidate old regions")
               ergo_format_byte_perc("reclaimable")
               ergo_format_perc("threshold"),
               cset_chooser->remaining_regions(),
-              reclaimable_bytes, perc, threshold);
+              reclaimable_bytes,
+              reclaimable_perc, threshold);
     return false;
   }
 
@@ -1838,10 +1848,50 @@
                 ergo_format_byte_perc("reclaimable")
                 ergo_format_perc("threshold"),
                 cset_chooser->remaining_regions(),
-                reclaimable_bytes, perc, threshold);
+                reclaimable_bytes,
+                reclaimable_perc, threshold);
   return true;
 }
 
+uint G1CollectorPolicy::calc_min_old_cset_length() {
+  // The min old CSet region bound is based on the maximum desired
+  // number of mixed GCs after a cycle. I.e., even if some old regions
+  // look expensive, we should add them to the CSet anyway to make
+  // sure we go through the available old regions in no more than the
+  // maximum desired number of mixed GCs.
+  //
+  // The calculation is based on the number of marked regions we added
+  // to the CSet chooser in the first place, not how many remain, so
+  // that the result is the same during all mixed GCs that follow a cycle.
+
+  const size_t region_num = (size_t) _collectionSetChooser->length();
+  const size_t gc_num = (size_t) MAX2(G1MixedGCCountTarget, (uintx) 1);
+  size_t result = region_num / gc_num;
+  // emulate ceiling
+  if (result * gc_num < region_num) {
+    result += 1;
+  }
+  return (uint) result;
+}
+
+uint G1CollectorPolicy::calc_max_old_cset_length() {
+  // The max old CSet region bound is based on the threshold expressed
+  // as a percentage of the heap size. I.e., it should bound the
+  // number of old regions added to the CSet irrespective of how many
+  // of them are available.
+
+  G1CollectedHeap* g1h = G1CollectedHeap::heap();
+  const size_t region_num = g1h->n_regions();
+  const size_t perc = (size_t) G1OldCSetRegionThresholdPercent;
+  size_t result = region_num * perc / 100;
+  // emulate ceiling
+  if (100 * result < region_num * perc) {
+    result += 1;
+  }
+  return (uint) result;
+}
+
+
 void G1CollectorPolicy::finalize_cset(double target_pause_time_ms) {
   double young_start_time_sec = os::elapsedTime();
 
@@ -1855,7 +1905,7 @@
 
   double base_time_ms = predict_base_elapsed_time_ms(_pending_cards);
   double predicted_pause_time_ms = base_time_ms;
-  double time_remaining_ms = target_pause_time_ms - base_time_ms;
+  double time_remaining_ms = MAX2(target_pause_time_ms - base_time_ms, 0.0);
 
   ergo_verbose4(ErgoCSetConstruction | ErgoHigh,
                 "start choosing CSet",
@@ -1893,7 +1943,7 @@
 
   _collection_set = _inc_cset_head;
   _collection_set_bytes_used_before = _inc_cset_bytes_used_before;
-  time_remaining_ms -= _inc_cset_predicted_elapsed_time_ms;
+  time_remaining_ms = MAX2(time_remaining_ms - _inc_cset_predicted_elapsed_time_ms, 0.0);
   predicted_pause_time_ms += _inc_cset_predicted_elapsed_time_ms;
 
   ergo_verbose3(ErgoCSetConstruction | ErgoHigh,
@@ -1917,8 +1967,8 @@
   if (!gcs_are_young()) {
     CollectionSetChooser* cset_chooser = _collectionSetChooser;
     cset_chooser->verify();
-    const uint min_old_cset_length = cset_chooser->calc_min_old_cset_length();
-    const uint max_old_cset_length = cset_chooser->calc_max_old_cset_length();
+    const uint min_old_cset_length = calc_min_old_cset_length();
+    const uint max_old_cset_length = calc_max_old_cset_length();
 
     uint expensive_region_num = 0;
     bool check_time_remaining = adaptive_young_list_length();
@@ -1936,6 +1986,30 @@
         break;
       }
 
+
+      // Stop adding regions if the remaining reclaimable space is
+      // not above G1HeapWastePercent.
+      size_t reclaimable_bytes = cset_chooser->remaining_reclaimable_bytes();
+      double reclaimable_perc = reclaimable_bytes_perc(reclaimable_bytes);
+      double threshold = (double) G1HeapWastePercent;
+      if (reclaimable_perc <= threshold) {
+        // We've added enough old regions that the amount of uncollected
+        // reclaimable space is at or below the waste threshold. Stop
+        // adding old regions to the CSet.
+        ergo_verbose5(ErgoCSetConstruction,
+                      "finish adding old regions to CSet",
+                      ergo_format_reason("reclaimable percentage not over threshold")
+                      ergo_format_region("old")
+                      ergo_format_region("max")
+                      ergo_format_byte_perc("reclaimable")
+                      ergo_format_perc("threshold"),
+                      old_cset_region_length(),
+                      max_old_cset_length,
+                      reclaimable_bytes,
+                      reclaimable_perc, threshold);
+        break;
+      }
+
       double predicted_time_ms = predict_region_elapsed_time_ms(hr, gcs_are_young());
       if (check_time_remaining) {
         if (predicted_time_ms > time_remaining_ms) {
@@ -1975,7 +2049,7 @@
       }
 
       // We will add this region to the CSet.
-      time_remaining_ms -= predicted_time_ms;
+      time_remaining_ms = MAX2(time_remaining_ms - predicted_time_ms, 0.0);
       predicted_pause_time_ms += predicted_time_ms;
       cset_chooser->remove_and_move_to_next(hr);
       _g1->old_set_remove(hr);

--- a/src/share/vm/gc_implementation/g1/g1CollectorPolicy.hpp	Thu Mar 07 10:46:14 2013 -0500
+++ b/src/share/vm/gc_implementation/g1/g1CollectorPolicy.hpp	Thu Mar 07 10:39:15 2013 -0800
@@ -619,6 +619,18 @@
   bool predict_will_fit(uint young_length, double base_time_ms,
                         uint base_free_regions, double target_pause_time_ms);
 
+  // Calculate the minimum number of old regions we'll add to the CSet
+  // during a mixed GC.
+  uint calc_min_old_cset_length();
+
+  // Calculate the maximum number of old regions we'll add to the CSet
+  // during a mixed GC.
+  uint calc_max_old_cset_length();
+
+  // Returns the given amount of uncollected reclaimable space
+  // as a percentage of the current heap capacity.
+  double reclaimable_bytes_perc(size_t reclaimable_bytes);
+
 public:
 
   G1CollectorPolicy();

--- a/src/share/vm/memory/metaspaceCounters.cpp	Thu Mar 07 10:46:14 2013 -0500
+++ b/src/share/vm/memory/metaspaceCounters.cpp	Thu Mar 07 10:39:15 2013 -0800
@@ -25,12 +25,14 @@
 #include "precompiled.hpp"
 #include "memory/metaspaceCounters.hpp"
 #include "memory/resourceArea.hpp"
-
-#define METASPACE_NAME "perm"
+#include "utilities/exceptions.hpp"
 
 MetaspaceCounters* MetaspaceCounters::_metaspace_counters = NULL;
 
-MetaspaceCounters::MetaspaceCounters() {
+MetaspaceCounters::MetaspaceCounters() :
+    _capacity(NULL),
+    _used(NULL),
+    _max_capacity(NULL) {
   if (UsePerfData) {
     size_t min_capacity = MetaspaceAux::min_chunk_size();
     size_t max_capacity = MetaspaceAux::reserved_in_bytes();
@@ -41,6 +43,25 @@
   }
 }
 
+static PerfVariable* create_ms_variable(const char *ns,
+                                        const char *name,
+                                        size_t value,
+                                        TRAPS) {
+  const char *path = PerfDataManager::counter_name(ns, name);
+  PerfVariable *result =
+      PerfDataManager::create_variable(SUN_GC, path, PerfData::U_Bytes, value,
+                                       CHECK_NULL);
+  return result;
+}
+
+static void create_ms_constant(const char *ns,
+                               const char *name,
+                               size_t value,
+                               TRAPS) {
+  const char *path = PerfDataManager::counter_name(ns, name);
+  PerfDataManager::create_constant(SUN_GC, path, PerfData::U_Bytes, value, CHECK);
+}
+
 void MetaspaceCounters::initialize(size_t min_capacity,
                                    size_t max_capacity,
                                    size_t curr_capacity,
@@ -50,93 +71,32 @@
     EXCEPTION_MARK;
     ResourceMark rm;
 
-    // Create a name that will be recognized by jstat tools as
-    // the perm gen.  Change this to a Metaspace name when the
-    // tools are fixed.
-    // name to recognize "sun.gc.generation.2.*"
-
-    const char* name = METASPACE_NAME;
-    const int ordinal = 2;
-    const int spaces = 1;
-
-    const char* cns = PerfDataManager::name_space("generation", ordinal);
-
-    _name_space = NEW_C_HEAP_ARRAY(char, strlen(cns)+1, mtClass);
-    strcpy(_name_space, cns);
-
-    const char* cname = PerfDataManager::counter_name(_name_space, "name");
-    PerfDataManager::create_string_constant(SUN_GC, cname, name, CHECK);
-
-    // End of perm gen like name creation
-
-    cname = PerfDataManager::counter_name(_name_space, "spaces");
-    PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_None,
-                                     spaces, CHECK);
-
-    cname = PerfDataManager::counter_name(_name_space, "minCapacity");
-    PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_Bytes,
-                                     min_capacity, CHECK);
-
-    cname = PerfDataManager::counter_name(_name_space, "maxCapacity");
-    PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_Bytes,
-                                     max_capacity, CHECK);
+    const char *ms = "metaspace";
 
-    cname = PerfDataManager::counter_name(_name_space, "capacity");
-    _current_size =
-      PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Bytes,
-                                       curr_capacity, CHECK);
-
-    // SpaceCounter like counters
-    // name to recognize "sun.gc.generation.2.space.0.*"
-    {
-      const int space_ordinal = 0;
-      const char* cns = PerfDataManager::name_space(_name_space, "space",
-                                                    space_ordinal);
-
-      char* space_name_space = NEW_C_HEAP_ARRAY(char, strlen(cns)+1, mtClass);
-      strcpy(space_name_space, cns);
-
-      const char* cname = PerfDataManager::counter_name(space_name_space, "name");
-      PerfDataManager::create_string_constant(SUN_GC, cname, name, CHECK);
-
-      cname = PerfDataManager::counter_name(space_name_space, "maxCapacity");
-      _max_capacity = PerfDataManager::create_variable(SUN_GC, cname,
-                                                       PerfData::U_Bytes,
-                                                       (jlong)max_capacity, CHECK);
-
-      cname = PerfDataManager::counter_name(space_name_space, "capacity");
-      _capacity = PerfDataManager::create_variable(SUN_GC, cname,
-                                                   PerfData::U_Bytes,
-                                                   curr_capacity, CHECK);
-
-      cname = PerfDataManager::counter_name(space_name_space, "used");
-      _used = PerfDataManager::create_variable(SUN_GC,
-                                               cname,
-                                               PerfData::U_Bytes,
-                                               used,
-                                               CHECK);
-
-    cname = PerfDataManager::counter_name(space_name_space, "initCapacity");
-    PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_Bytes,
-                                     min_capacity, CHECK);
-    }
+    create_ms_constant(ms, "minCapacity", min_capacity, CHECK);
+    _max_capacity = create_ms_variable(ms, "maxCapacity", max_capacity, CHECK);
+    _capacity = create_ms_variable(ms, "capacity", curr_capacity, CHECK);
+    _used = create_ms_variable(ms, "used", used, CHECK);
   }
 }
 
 void MetaspaceCounters::update_capacity() {
   assert(UsePerfData, "Should not be called unless being used");
+  assert(_capacity != NULL, "Should be initialized");
   size_t capacity_in_bytes = MetaspaceAux::capacity_in_bytes();
   _capacity->set_value(capacity_in_bytes);
 }
 
 void MetaspaceCounters::update_used() {
   assert(UsePerfData, "Should not be called unless being used");
+  assert(_used != NULL, "Should be initialized");
   size_t used_in_bytes = MetaspaceAux::used_in_bytes();
   _used->set_value(used_in_bytes);
 }
 
 void MetaspaceCounters::update_max_capacity() {
   assert(UsePerfData, "Should not be called unless being used");
+  assert(_max_capacity != NULL, "Should be initialized");
   size_t reserved_in_bytes = MetaspaceAux::reserved_in_bytes();
   _max_capacity->set_value(reserved_in_bytes);
 }
@@ -146,18 +106,19 @@
     update_used();
     update_capacity();
     update_max_capacity();
-    _current_size->set_value(MetaspaceAux::reserved_in_bytes());
   }
 }
 
 void MetaspaceCounters::initialize_performance_counters() {
   if (UsePerfData) {
+    assert(_metaspace_counters == NULL, "Should only be initialized once");
     _metaspace_counters = new MetaspaceCounters();
   }
 }
 
 void MetaspaceCounters::update_performance_counters() {
   if (UsePerfData) {
+    assert(_metaspace_counters != NULL, "Should be initialized");
     _metaspace_counters->update_all();
   }
 }

--- a/src/share/vm/memory/metaspaceCounters.hpp	Thu Mar 07 10:46:14 2013 -0500
+++ b/src/share/vm/memory/metaspaceCounters.hpp	Thu Mar 07 10:39:15 2013 -0800
@@ -29,11 +29,9 @@
 
 class MetaspaceCounters: public CHeapObj<mtClass> {
   friend class VMStructs;
-  PerfVariable*      _current_size;
   PerfVariable*      _capacity;
   PerfVariable*      _used;
   PerfVariable*      _max_capacity;
-  char*              _name_space;
   static MetaspaceCounters* _metaspace_counters;
   void initialize(size_t min_capacity,
                   size_t max_capacity,

--- a/src/share/vm/runtime/globals.hpp	Thu Mar 07 10:46:14 2013 -0500
+++ b/src/share/vm/runtime/globals.hpp	Thu Mar 07 10:39:15 2013 -0800
@@ -1751,6 +1751,10 @@
   manageable(intx, CMSWaitDuration, 2000,                                   \
           "Time in milliseconds that CMS thread waits for young GC")        \
                                                                             \
+  develop(uintx, CMSCheckInterval, 1000,                                    \
+          "Interval in milliseconds that CMS thread checks if it "          \
+          "should start a collection cycle")                                \
+                                                                            \
   product(bool, CMSYield, true,                                             \
           "Yield between steps of concurrent mark & sweep")                 \
                                                                             \