diff --git a/src/query/src/qExecutor.c b/src/query/src/qExecutor.c
index 6f4afcd6bd44ec8854c14a0b36c5963b5e634627..68239c5c63248e199e6b339767acdc5d6e905038 100644
--- a/src/query/src/qExecutor.c
+++ b/src/query/src/qExecutor.c
@@ -419,6 +419,8 @@ static SWindowResult *doSetTimeWindowFromKey(SQueryRuntimeEnv *pRuntimeEnv, SWin
       int32_t inc = newCap - pWindowResInfo->capacity;
       memset(&pWindowResInfo->pResult[pWindowResInfo->capacity], 0, sizeof(SWindowResult) * inc);
 
+      pRuntimeEnv->summary.internalSupSize += (pQuery->numOfOutput * sizeof(SResultInfo) + pRuntimeEnv->interBufSize) * inc;
+
       for (int32_t i = pWindowResInfo->capacity; i < newCap; ++i) {
         createQueryResultInfo(pQuery, &pWindowResInfo->pResult[i], pRuntimeEnv->stableQuery, pRuntimeEnv->interBufSize);
       }
diff --git a/src/query/src/qUtil.c b/src/query/src/qUtil.c
index 007a25f772c7fadb5fc83fed1fe063e860a3ba23..a01eb33ec7fb66ef7751e6371df7dc30e6c35064 100644
--- a/src/query/src/qUtil.c
+++ b/src/query/src/qUtil.c
@@ -46,12 +46,17 @@ int32_t initWindowResInfo(SWindowResInfo *pWindowResInfo, SQueryRuntimeEnv *pRun
   pWindowResInfo->size     = 0;
   pWindowResInfo->prevSKey = TSKEY_INITIAL_VAL;
   
+  pRuntimeEnv->summary.internalSupSize += sizeof(SWindowResult) * threshold;
+
   // use the pointer arraylist
   pWindowResInfo->pResult = calloc(threshold, sizeof(SWindowResult));
   if (pWindowResInfo->pResult == NULL) {
     return TSDB_CODE_QRY_OUT_OF_MEMORY;
   }
 
+  pRuntimeEnv->summary.internalSupSize += sizeof(SWindowResult) * threshold;
+  pRuntimeEnv->summary.internalSupSize += (pRuntimeEnv->pQuery->numOfOutput * sizeof(SResultInfo) + pRuntimeEnv->interBufSize) * pWindowResInfo->capacity;
+
   for (int32_t i = 0; i < pWindowResInfo->capacity; ++i) {
     int32_t code = createQueryResultInfo(pRuntimeEnv->pQuery, &pWindowResInfo->pResult[i], pRuntimeEnv->stableQuery, pRuntimeEnv->interBufSize);
     if (code != TSDB_CODE_SUCCESS) {