Always shrink initial old generation size based on survival rate.

src/heap/heap.cc

Index: src/heap/heap.cc
diff --git a/src/heap/heap.cc b/src/heap/heap.cc
index d4cd78ebdaa7f1161ff56ea45a5cfdf6f6fe3e8e..a67bf050b2ee2aa6c677aff8d1cd308d05f654ea 100644
--- a/src/heap/heap.cc
+++ b/src/heap/heap.cc
@@ -1092,8 +1092,6 @@ void Heap::UpdateSurvivalStatistics(int start_new_space_size) {
   promotion_ratio_ = (static_cast<double>(promoted_objects_size_) /
                       static_cast<double>(start_new_space_size) * 100);
 
-  if (gc_count_ > 1) tracer()->AddPromotionRatio(promotion_ratio_);
-
   if (previous_semi_space_copied_object_size_ > 0) {
     promotion_rate_ =
         (static_cast<double>(promoted_objects_size_) /
@@ -1107,6 +1105,7 @@ void Heap::UpdateSurvivalStatistics(int start_new_space_size) {
        static_cast<double>(start_new_space_size) * 100);
 
   double survival_rate = promotion_ratio_ + semi_space_copied_rate_;
+  tracer()->AddSurvivalRatio(survival_rate);
   if (survival_rate > kYoungSurvivalRateHighThreshold) {
     high_survival_rate_period_length_++;
   } else {
@@ -2418,8 +2417,8 @@ void Heap::ConfigureInitialOldGenerationSize() {
     old_generation_allocation_limit_ =
         Max(kMinimumOldGenerationAllocationLimit,
             static_cast<intptr_t>(
-                static_cast<double>(initial_old_generation_size_) *
-                (tracer()->AveragePromotionRatio() / 100)));
+                static_cast<double>(old_generation_allocation_limit_) *
+                (tracer()->AverageSurvivalRatio() / 100)));
   }
 }