Increase max semi-space size.

src/heap.cc

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 59 matching lines @@
 int Heap::amount_of_external_allocated_memory_ = 0;
 int Heap::amount_of_external_allocated_memory_at_last_global_gc_ = 0;
 
 // semispace_size_ should be a power of 2 and old_generation_size_ should be
 // a multiple of Page::kPageSize.
 #if defined(ANDROID)
 int Heap::semispace_size_  = 512*KB;
 int Heap::old_generation_size_ = 128*MB;
 int Heap::initial_semispace_size_ = 128*KB;
 #elif defined(V8_TARGET_ARCH_X64)
-int Heap::semispace_size_  = 8*MB;
+int Heap::semispace_size_  = 16*MB;
 int Heap::old_generation_size_ = 1*GB;
 int Heap::initial_semispace_size_ = 1*MB;
 #else
-int Heap::semispace_size_  = 4*MB;
+int Heap::semispace_size_  = 8*MB;
 int Heap::old_generation_size_ = 512*MB;
 int Heap::initial_semispace_size_ = 512*KB;
 #endif
 
 GCCallback Heap::global_gc_prologue_callback_ = NULL;
 GCCallback Heap::global_gc_epilogue_callback_ = NULL;
 
 // Variables set based on semispace_size_ and old_generation_size_ in
 // ConfigureHeap.
 int Heap::young_generation_size_ = 0;  // Will be 2 * semispace_size_.
@@ skipping 3903 matching lines @@
   for (int i = 0; i < kNumberOfCaches; i++) {
     if (caches_[i] != NULL) {
       delete caches_[i];
       caches_[i] = NULL;
     }
   }
 }
 
 
 } }  // namespace v8::internal