diff --git a/internal/cmd/run.go b/internal/cmd/run.go
index e1557ef..acdc3d3 100644
--- a/internal/cmd/run.go
+++ b/internal/cmd/run.go
@@ -174,22 +174,27 @@ func executeData(ctx context.Context, input, output interfaces.DumpIO) error {
 			close(ch)
 		}()
 
+	Loop:
 		for _, query := range queries {
-			select {
-			case <-c.Done():
-				return
-			default:
-				if lines, err = input.ReadData(c, f_limit, query); err != nil {
-					errCh <- err
+			for {
+				select {
+				case <-c.Done():
 					return
-				}
+				default:
+					if lines, err = input.ReadData(c, f_limit, query); err != nil {
+						errCh <- err
+						return
+					}
 
-				if len(lines) == 0 {
-					input.ResetOffset()
-					continue
-				}
+					logrus.Debugf("executeData: input read_data got lines=%d", len(lines))
 
-				ch <- lines
+					if len(lines) == 0 {
+						input.ResetOffset()
+						continue Loop
+					}
+
+					ch <- lines
+				}
 			}
 		}
 	}(ctx)
@@ -219,6 +224,8 @@ func executeData(ctx context.Context, input, output interfaces.DumpIO) error {
 				return err
 			}
 
+			logrus.Debugf("executeData: output write_data succeed lines=%d", succeed)
+
 			if succeed != len(docs) {
 				return fmt.Errorf("cmd.run: got lines=%d, only succeed=%d", len(docs), succeed)
 			}
diff --git a/internal/opt/var.go b/internal/opt/var.go
index eb2efd9..0d9ae13 100644
--- a/internal/opt/var.go
+++ b/internal/opt/var.go
@@ -7,4 +7,7 @@ const (
 var (
 	Debug   bool
 	Timeout int
+
+	BuffSize    = 5 * 1024 * 1024   // 5M
+	MaxBuffSize = 100 * 1024 * 1024 // 100M, default elastic_search doc max size
 )
diff --git a/internal/xes/xes.go b/internal/xes/xes.go
index c5d4cb1..e5cff64 100644
--- a/internal/xes/xes.go
+++ b/internal/xes/xes.go
@@ -152,8 +152,6 @@ func (c *client) WriteData(ctx context.Context, docs []*interfaces.ESSource) (in
 			return 0, err
 		}
 
-		logrus.Debugf("xes.Write: doc content=%s", string(bs))
-
 		if err = indexer.Add(context.Background(), esutil.BulkIndexerItem{
 			Action:     "index",
 			Index:      c.index,
diff --git a/internal/xfile/xfile.go b/internal/xfile/xfile.go
index 384929f..c207f0a 100644
--- a/internal/xfile/xfile.go
+++ b/internal/xfile/xfile.go
@@ -4,11 +4,11 @@ import (
 	"bufio"
 	"context"
 	"encoding/json"
+	"github.com/loveuer/esgo2dump/internal/opt"
 	"io"
 	"os"
 
 	"github.com/loveuer/esgo2dump/internal/interfaces"
-	"github.com/sirupsen/logrus"
 )
 
 type client struct {
@@ -121,8 +121,6 @@ func (c *client) ReadData(ctx context.Context, i int, _ map[string]any) ([]*inte
 	for c.scanner.Scan() {
 		line := c.scanner.Text()
 
-		logrus.Debugf("xfile.Read: line=%s", line)
-
 		item := new(interfaces.ESSource)
 		if err = json.Unmarshal([]byte(line), item); err != nil {
 			return list, err
@@ -152,6 +150,8 @@ func NewClient(file *os.File, ioType interfaces.IO) (interfaces.DumpIO, error) {
 
 	if ioType == interfaces.IOInput {
 		c.scanner = bufio.NewScanner(c.f)
+		buf := make([]byte, opt.BuffSize)
+		c.scanner.Buffer(buf, opt.MaxBuffSize)
 	}
 
 	return c, nil