AuroraMiddleware/v8
1
0
Fork 0
Code Issues 2 Pull Requests Releases Wiki Activity

Trace scavenger throughput.

Browse Source 
BUG=
R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/487753003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23195 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
ulan@chromium.org 2014-08-19 12:07:59 +00:00
parent 30af557955
commit ed668b8f2c
2 changed files with 29 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
src/heap/gc-tracer.cc
View File

@ -103,6 +103,8 @@ void GCTracer::Start(GarbageCollector collector, const char* gc_reason,
current_.start_object_size = heap_->SizeOfObjects();
current_.start_memory_size = heap_->isolate()->memory_allocator()->Size();
current_.start_holes_size = CountTotalHolesSize(heap_);
current_.new_space_object_size =
heap_->new_space()->top() - heap_->new_space()->bottom();
current_.cumulative_incremental_marking_steps =
cumulative_incremental_marking_steps_;
@ -296,6 +298,8 @@ void GCTracer::PrintNVP() const {
if (current_.type == Event::SCAVENGER) {
PrintF("steps_count=%d ", current_.incremental_marking_steps);
PrintF("steps_took=%.1f ", current_.incremental_marking_duration);
PrintF("scavenge_throughput=%" V8_PTR_PREFIX "d ",
ScavengeSpeedInBytesPerMillisecond());
} else {
PrintF("steps_count=%d ", current_.incremental_marking_steps);
PrintF("steps_took=%.1f ", current_.incremental_marking_duration);
@ -398,5 +402,21 @@ intptr_t GCTracer::IncrementalMarkingSpeedInBytesPerMillisecond() const {
return static_cast<intptr_t>(bytes / durations);
}
intptr_t GCTracer::ScavengeSpeedInBytesPerMillisecond() const {
intptr_t bytes = 0;
double durations = 0.0;
EventBuffer::const_iterator iter = scavenger_events_.begin();
while (iter != scavenger_events_.end()) {
bytes += iter->new_space_object_size;
durations += iter->end_time - iter->start_time;
++iter;
}
if (durations == 0.0) return 0;
return static_cast<intptr_t>(bytes / durations);
}
}
} // namespace v8::internal

11
src/heap/gc-tracer.h
View File

@ -171,6 +171,9 @@ class GCTracer BASE_EMBEDDED {
// after the current GC.
intptr_t end_holes_size;
// Size of new space objects in constructor.
intptr_t new_space_object_size;
// Number of incremental marking steps since creation of tracer.
// (value at start of event)
int cumulative_incremental_marking_steps;
@ -280,10 +283,14 @@ class GCTracer BASE_EMBEDDED {
// Returns 0 if no incremental marking round has been completed.
double MaxIncrementalMarkingDuration() const;
// Compute the average incremental marking speed in bytes/second. Returns 0 if
// no events have been recorded.
// Compute the average incremental marking speed in bytes/millisecond.
// Returns 0 if no events have been recorded.
intptr_t IncrementalMarkingSpeedInBytesPerMillisecond() const;
// Compute the average scavenge speed in bytes/millisecond.
// Returns 0 if no events have been recorded.
intptr_t ScavengeSpeedInBytesPerMillisecond() const;
private:
// Print one detailed trace line in name=value format.
// TODO(ernstm): Move to Heap.