Reviewers: Michael Starzinger,
Description:
Print promotion rate and semi-space copy rate in --trace-gc-nvp.
BUG=
Please review this at https://codereview.chromium.org/290133004/
SVN Base: https://v8.googlecode.com/svn/branches/bleeding_edge
Affected files (+24, -2 lines):
M src/heap.h
M src/heap.cc
Index: src/heap.cc
diff --git a/src/heap.cc b/src/heap.cc
index
5d338b2122374a163e083aca1453c7c135bc4c0b..d6503cf7b7c62bbbd055bf502c512608db993cf2
100644
--- a/src/heap.cc
+++ b/src/heap.cc
@@ -2056,7 +2056,9 @@ class ScavengingVisitor : public StaticVisitorBase {
}
}
- heap->tracer()->increment_promoted_objects_size(object_size);
+ if (FLAG_trace_gc) {
+ heap->tracer()->increment_promoted_objects_size(object_size);
+ }
return;
}
}
@@ -2075,6 +2077,9 @@ class ScavengingVisitor : public StaticVisitorBase {
// buffer.
*slot = target;
MigrateObject(heap, object, target, object_size);
+ if (FLAG_trace_gc) {
+ heap->tracer()->increment_semi_space_copied_object_size(object_size);
+ }
return;
}
@@ -6029,6 +6034,7 @@ GCTracer::GCTracer(Heap* heap,
allocated_since_last_gc_(0),
spent_in_mutator_(0),
promoted_objects_size_(0),
+ semi_space_copied_object_size_(0),
nodes_died_in_new_space_(0),
nodes_copied_in_new_space_(0),
nodes_promoted_(0),
@@ -6176,10 +6182,18 @@ GCTracer::~GCTracer() {
PrintF("allocated=%" V8_PTR_PREFIX "d ", allocated_since_last_gc_);
PrintF("promoted=%" V8_PTR_PREFIX "d ", promoted_objects_size_);
+ PrintF("semi_space_copied=%" V8_PTR_PREFIX "d ",
+ semi_space_copied_object_size_);
PrintF("nodes_died_in_new=%d ", nodes_died_in_new_space_);
PrintF("nodes_copied_in_new=%d ", nodes_copied_in_new_space_);
PrintF("nodes_promoted=%d ", nodes_promoted_);
- PrintF("survived=%.1f%% ", heap_->survival_rate_);
+ PrintF("survival_rate=%.1f%% ", heap_->survival_rate_);
+ PrintF("promotion_rate=%.1f%% ",
+ (static_cast<double>(promoted_objects_size_) /
+ static_cast<double>(heap_->new_space()->Capacity())) * 100);
+ PrintF("semi_space_copy_rate=%.1f%% ",
+ (static_cast<double>(semi_space_copied_object_size_) /
+ static_cast<double>(heap_->new_space()->Capacity())) * 100);
if (collector_ == SCAVENGER) {
PrintF("stepscount=%d ", steps_count_since_last_gc_);
Index: src/heap.h
diff --git a/src/heap.h b/src/heap.h
index
d0d35473912f9588981f1924c5df16eedbe40268..074754c8665127668d711eea949db2d61bf2990e
100644
--- a/src/heap.h
+++ b/src/heap.h
@@ -2604,6 +2604,10 @@ class GCTracer BASE_EMBEDDED {
promoted_objects_size_ += object_size;
}
+ void increment_semi_space_copied_object_size(int object_size) {
+ semi_space_copied_object_size_ += object_size;
+ }
+
void increment_nodes_died_in_new_space() {
nodes_died_in_new_space_++;
}
@@ -2660,6 +2664,10 @@ class GCTracer BASE_EMBEDDED {
// Size of objects promoted during the current collection.
intptr_t promoted_objects_size_;
+ // Size of objects copied to the other semi-space during the current
+ // collection.
+ intptr_t semi_space_copied_object_size_;
+
// Number of died nodes in the new space.
int nodes_died_in_new_space_;
--
--
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