diff --git a/agent/internal/grpc/io.go b/agent/internal/grpc/io.go
index 584b8aa..89eccbe 100644
--- a/agent/internal/grpc/io.go
+++ b/agent/internal/grpc/io.go
@@ -60,14 +60,10 @@ func (s *Service) SendStream(server agtrpc.Agent_SendStreamServer) error {
 
 	pr, pw := io.Pipe()
 
-	rb := io2.RingBuffer(pr, 16*1024)
-	rb.UpstreamName = fmt.Sprintf("GRPC(send) input")
-	rb.DownstreamName = fmt.Sprintf("GRPC(send) output %v", msg.VarID)
-
 	varID := exec.VarID(msg.VarID)
 	sw.PutVars(&exec.StreamVar{
 		ID:     varID,
-		Stream: rb,
+		Stream: pr,
 	})
 
 	// 然后读取文件数据
diff --git a/common/pkgs/ioswitch2/ops2/ipfs.go b/common/pkgs/ioswitch2/ops2/ipfs.go
index b1dbd65..f8e4e2a 100644
--- a/common/pkgs/ioswitch2/ops2/ipfs.go
+++ b/common/pkgs/ioswitch2/ops2/ipfs.go
@@ -44,10 +44,7 @@ func (o *IPFSRead) Execute(ctx context.Context, e *exec.Executor) error {
 	defer file.Close()
 
 	fut := future.NewSetVoid()
-	rb := io2.RingBuffer(file, 16*1024)
-	rb.UpstreamName = "IPFS"
-	rb.DownstreamName = fmt.Sprintf("IPFS output %v", o.Output.ID)
-	o.Output.Stream = io2.AfterReadClosedOnce(rb, func(closer io.ReadCloser) {
+	o.Output.Stream = io2.AfterReadClosedOnce(file, func(closer io.ReadCloser) {
 		fut.SetVoid()
 	})
 	e.PutVars(o.Output)