Only sweep one page eagerly unless we are running out of space.

src/heap.cc

 // Copyright 2011 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 6244 matching lines @@
         break;
       default:
         UNREACHABLE();
     }
     PrintF(" ");
 
     PrintF("external=%d ", static_cast<int>(scopes_[Scope::EXTERNAL]));
     PrintF("mark=%d ", static_cast<int>(scopes_[Scope::MC_MARK]));
     PrintF("sweep=%d ", static_cast<int>(scopes_[Scope::MC_SWEEP]));
     PrintF("sweepns=%d ", static_cast<int>(scopes_[Scope::MC_SWEEP_NEWSPACE]));
-    PrintF("compact=%d ", static_cast<int>(scopes_[Scope::MC_COMPACT]));
+    PrintF("evacuate=%d ", static_cast<int>(scopes_[Scope::MC_EVACUATE_PAGES]));
+    PrintF("new_new=%d ",
+           static_cast<int>(scopes_[Scope::MC_UPDATE_NEW_TO_NEW_POINTERS]));
+    PrintF("root_new=%d ",
+           static_cast<int>(scopes_[Scope::MC_UPDATE_ROOT_TO_NEW_POINTERS]));
+    PrintF("old_new=%d ",
+           static_cast<int>(scopes_[Scope::MC_UPDATE_OLD_TO_NEW_POINTERS]));
+    PrintF("compaction_ptrs=%d ",
+           static_cast<int>(scopes_[Scope::MC_UPDATE_POINTERS_TO_EVACUATED]));
+    PrintF("intracompaction_ptrs=%d ", static_cast<int>(scopes_[
+        Scope::MC_UPDATE_POINTERS_BETWEEN_EVACUATED]));
+    PrintF("misc_compaction=%d ",
+           static_cast<int>(scopes_[Scope::MC_UPDATE_MISC_POINTERS]));
 
     PrintF("total_size_before=%" V8_PTR_PREFIX "d ", start_size_);
     PrintF("total_size_after=%" V8_PTR_PREFIX "d ", heap_->SizeOfObjects());
     PrintF("holes_size_before=%" V8_PTR_PREFIX "d ",
            in_free_list_or_wasted_before_gc_);
     PrintF("holes_size_after=%" V8_PTR_PREFIX "d ", CountTotalHolesSize());
 
     PrintF("allocated=%" V8_PTR_PREFIX "d ", allocated_since_last_gc_);
     PrintF("promoted=%" V8_PTR_PREFIX "d ", promoted_objects_size_);
 
@@ skipping 173 matching lines @@
   isolate_->heap()->store_buffer()->Compact();
   isolate_->heap()->store_buffer()->Filter(MemoryChunk::ABOUT_TO_BE_FREED);
   for (chunk = chunks_queued_for_free_; chunk != NULL; chunk = next) {
     next = chunk->next_chunk();
     isolate_->memory_allocator()->Free(chunk);
   }
   chunks_queued_for_free_ = NULL;
 }
 
 } }  // namespace v8::internal