Revert "Grow big old generation slower."

src/heap.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
 #include "src/api.h"
 #include "src/base/once.h"
 #include "src/bootstrapper.h"
@@ skipping 42 matching lines @@
       reserved_semispace_size_(8 * (kPointerSize / 4) * MB),
       max_semi_space_size_(8 * (kPointerSize / 4)  * MB),
       initial_semispace_size_(Page::kPageSize),
       max_old_generation_size_(700ul * (kPointerSize / 4) * MB),
       max_executable_size_(256ul * (kPointerSize / 4) * MB),
 // Variables set based on semispace_size_ and old_generation_size_ in
 // ConfigureHeap.
 // Will be 4 * reserved_semispace_size_ to ensure that young
 // generation can be aligned to its size.
       maximum_committed_(0),
+      old_space_growing_factor_(4),
       survived_since_last_expansion_(0),
       sweep_generation_(0),
       always_allocate_scope_depth_(0),
       linear_allocation_scope_depth_(0),
       contexts_disposed_(0),
       global_ic_age_(0),
       flush_monomorphic_ics_(false),
       scan_on_scavenge_pages_(0),
       new_space_(this),
       old_pointer_space_(NULL),
@@ skipping 4942 matching lines @@
           max_old_generation_size_);
 
   // We rely on being able to allocate new arrays in paged spaces.
   ASSERT(Page::kMaxRegularHeapObjectSize >=
          (JSArray::kSize +
           FixedArray::SizeFor(JSObject::kInitialMaxFastElementArray) +
           AllocationMemento::kSize));
 
   code_range_size_ = code_range_size * MB;
 
+  // We set the old generation growing factor to 2 to grow the heap slower on
+  // memory-constrained devices.
+  if (max_old_generation_size_ <= kMaxOldSpaceSizeMediumMemoryDevice) {
+    old_space_growing_factor_ = 2;
+  }
+
   configured_ = true;
   return true;
 }
 
 
 bool Heap::ConfigureHeapDefault() {
   return ConfigureHeap(0, 0, 0, 0);
 }
 
 
@@ skipping 1388 matching lines @@
       static_cast<int>(object_sizes_last_time_[index]));
   CODE_AGE_LIST_COMPLETE(ADJUST_LAST_TIME_OBJECT_COUNT)
 #undef ADJUST_LAST_TIME_OBJECT_COUNT
 
   MemCopy(object_counts_last_time_, object_counts_, sizeof(object_counts_));
   MemCopy(object_sizes_last_time_, object_sizes_, sizeof(object_sizes_));
   ClearObjectStats();
 }
 
 } }  // namespace v8::internal