diff --git a/internal/datanode/flow_graph_insert_buffer_node.go b/internal/datanode/flow_graph_insert_buffer_node.go
index 01e72ea453..5b77ead0e3 100644
--- a/internal/datanode/flow_graph_insert_buffer_node.go
+++ b/internal/datanode/flow_graph_insert_buffer_node.go
@@ -459,7 +459,7 @@ func (ibNode *insertBufferNode) Sync(fgMsg *flowGraphMsg, seg2Upload []UniqueID,
 			zap.Bool("auto", task.auto),
 			zap.Any("position", endPosition),
 			zap.String("channel", ibNode.channelName),
-		)
+		).WithRateGroup("ibNode.sync", 1, 60)
 		// check if segment is syncing
 		segment := ibNode.channel.getSegment(task.segmentID)
 		if !task.dropped && !task.flushed && segment.isSyncing() {
diff --git a/internal/rootcoord/quota_center.go b/internal/rootcoord/quota_center.go
index d2931ae853..f56ddee250 100644
--- a/internal/rootcoord/quota_center.go
+++ b/internal/rootcoord/quota_center.go
@@ -412,9 +412,6 @@ func (q *QuotaCenter) calculateReadRates() {
 			q.guaranteeMinRate(getCollectionRateLimitConfig(collectionProps, common.CollectionSearchRateMinKey), internalpb.RateType_DQLSearch, collection)
 			q.guaranteeMinRate(getCollectionRateLimitConfig(collectionProps, common.CollectionQueryRateMinKey), internalpb.RateType_DQLQuery, collection)
 		}
-
-		log.RatedInfo(10, "QueryNodeMetrics when cool-off",
-			zap.Any("metrics", q.queryNodeMetrics))
 	}
 
 	// TODO: unify search and query?