diff --git a/weed/util/log_buffer/log_buffer.go b/weed/util/log_buffer/log_buffer.go
index bd124908e..3a91d23b2 100644
--- a/weed/util/log_buffer/log_buffer.go
+++ b/weed/util/log_buffer/log_buffer.go
@@ -116,7 +116,7 @@ func (m *LogBuffer) AddToBuffer(partitionKey, data []byte, processingTsNs int64)
 	copy(m.buf[m.pos+4:m.pos+4+size], logEntryData)
 	m.pos += size + 4
 
-	// fmt.Printf("entry size %d total %d count %d, buffer:%p\n", size, m.pos, len(m.idx), m)
+	// fmt.Printf("partitionKey %v entry size %d total %d count %d\n", string(partitionKey), size, m.pos, len(m.idx))
 
 }
 
@@ -157,6 +157,8 @@ func (m *LogBuffer) loopInterval() {
 		m.Unlock()
 		if toFlush != nil {
 			m.flushChan <- toFlush
+		} else {
+			// glog.V(0).Infof("%s no flush", m.name)
 		}
 	}
 }