diff --git a/client/proxy.go b/client/proxy.go
index 416f85e9..818aebc2 100644
--- a/client/proxy.go
+++ b/client/proxy.go
@@ -228,6 +228,7 @@ func (pxy *UdpProxy) InWorkConn(conn frpNet.Conn) {
 				sendCh <- &msg.Ping{}
 			}); errRet != nil {
 				pxy.Trace("heartbeat goroutine for udp work connection closed")
+				break
 			}
 		}
 	}
diff --git a/utils/log/log.go b/utils/log/log.go
index 241ddb27..ec6e0775 100644
--- a/utils/log/log.go
+++ b/utils/log/log.go
@@ -23,7 +23,7 @@ import (
 var Log *logs.BeeLogger
 
 func init() {
-	Log = logs.NewLogger(100)
+	Log = logs.NewLogger(200)
 	Log.EnableFuncCallDepth(true)
 	Log.SetLogFuncCallDepth(Log.GetLogFuncCallDepth() + 1)
 }
@@ -43,7 +43,7 @@ func SetLogFile(logWay string, logFile string, maxdays int64) {
 	}
 }
 
-// value: error, warning, info, debug
+// value: error, warning, info, debug, trace
 func SetLogLevel(logLevel string) {
 	level := 4 // warning
 	switch logLevel {
diff --git a/utils/pool/pool.go b/utils/pool/buf.go
similarity index 100%
rename from utils/pool/pool.go
rename to utils/pool/buf.go
diff --git a/utils/pool/pool_test.go b/utils/pool/buf_test.go
similarity index 100%
rename from utils/pool/pool_test.go
rename to utils/pool/buf_test.go