diff --git a/src/apps/debuganalyzer/model/ThreadModel.cpp b/src/apps/debuganalyzer/model/ThreadModel.cpp
index 423cab200c..00772b112e 100644
--- a/src/apps/debuganalyzer/model/ThreadModel.cpp
+++ b/src/apps/debuganalyzer/model/ThreadModel.cpp
@@ -15,13 +15,20 @@ ThreadModel::WaitObjectGroup::WaitObjectGroup(
 	Model::ThreadWaitObject** waitObjects, int32 count)
 	:
 	fWaitObjects(waitObjects),
-	fCount(count)
+	fCount(count),
+	fWaits(0),
+	fTotalWaitTime(0)
 {
+	for (int32 i = 0; i < fCount; i++) {
+		fWaits += fWaitObjects[i]->Waits();
+		fTotalWaitTime += fWaitObjects[i]->TotalWaitTime();
+	}
 }
 
 
 ThreadModel::WaitObjectGroup::~WaitObjectGroup()
 {
+	delete[] fWaitObjects;
 }
 
 
diff --git a/src/apps/debuganalyzer/model/ThreadModel.h b/src/apps/debuganalyzer/model/ThreadModel.h
index b0fb306cb9..6d63e76d76 100644
--- a/src/apps/debuganalyzer/model/ThreadModel.h
+++ b/src/apps/debuganalyzer/model/ThreadModel.h
@@ -56,6 +56,9 @@ public:
 	inline	uint32				Type() const;
 	inline	const char*			Name() const;
 
+	inline	int64				Waits() const;
+	inline	bigtime_t			TotalWaitTime() const;
+
 	inline	int32				CountWaitObjects() const;
 	inline	Model::ThreadWaitObject* WaitObjectAt(int32 index) const;
 
@@ -68,6 +71,8 @@ public:
 private:
 			Model::ThreadWaitObject** fWaitObjects;
 			int32				fCount;
+			int64				fWaits;
+			bigtime_t			fTotalWaitTime;
 };
 
 
@@ -105,6 +110,20 @@ ThreadModel::WaitObjectGroup::Name() const
 }
 
 
+int64
+ThreadModel::WaitObjectGroup::Waits() const
+{
+	return fWaits;
+}
+
+
+bigtime_t
+ThreadModel::WaitObjectGroup::TotalWaitTime() const
+{
+	return fTotalWaitTime;
+}
+
+
 int32
 ThreadModel::WaitObjectGroup::CountWaitObjects() const
 {