diff --git a/common_components/heap/allocator/region_manager.h b/common_components/heap/allocator/region_manager.h
index 94c102df5f416f32a40f0e0d5e0ae490ee1aebdf..bc22f9db19639ccbd4283e4da05ad8527d05bab9 100755
--- a/common_components/heap/allocator/region_manager.h
+++ b/common_components/heap/allocator/region_manager.h
@@ -333,7 +333,7 @@ public:
     size_t GetUsedUnitCount() const
     {
         return largeRegionList_.GetUnitCount() + recentLargeRegionList_.GetUnitCount() +
-            pinnedRegionList_.GetUnitCount() + recentPinnedRegionList_.GetUnitCount() +
+            GetPinnedUnitCount() +
             rawPointerRegionList_.GetUnitCount() + readOnlyRegionList_.GetUnitCount() +
             largeTraceRegions_.GetUnitCount() + appSpawnRegionList_.GetUnitCount();
     }
@@ -355,6 +355,17 @@ public:
             appSpawnRegionList_.GetAllocatedSize();
     }
 
+    inline size_t GetPinnedUnitCount() const
+    {
+        size_t pinnedUnitCount =
+            pinnedRegionList_.GetUnitCount() + recentPinnedRegionList_.GetUnitCount();
+        for (size_t i = 0; i < FIXED_PINNED_REGION_COUNT; i++) {
+            pinnedUnitCount += recentFixedPinnedRegionList_[i]->GetUnitCount();
+            pinnedUnitCount += fixedPinnedRegionList_[i]->GetUnitCount();
+        }
+        return pinnedUnitCount;
+    }
+
     inline size_t GetPinnedSpaceSize() const
     {
         size_t pinnedSpaceSize =
diff --git a/common_components/heap/collector/trace_collector.cpp b/common_components/heap/collector/trace_collector.cpp
index 21f1e9b69b5e0f8601336788ac5199a35046ece3..7a3b1f905bdc8095cc009773c061f7fa6e54ac89 100755
--- a/common_components/heap/collector/trace_collector.cpp
+++ b/common_components/heap/collector/trace_collector.cpp
@@ -579,6 +579,7 @@ void TraceCollector::PreGarbageCollection(bool isConcurrent)
     gcStats.collectedBytes = 0;
     gcStats.smallGarbageSize = 0;
     gcStats.pinnedGarbageSize = 0;
+    gcStats.largeGarbageSize = 0;
     gcStats.gcStartTime = TimeUtil::NanoSeconds();
     gcStats.totalSTWTime = 0;
     gcStats.maxSTWTime = 0;