diff --git a/cdc/sink/dmlsink/cloudstorage/dml_worker.go b/cdc/sink/dmlsink/cloudstorage/dml_worker.go
index 7af258f4d53..d7a1daf55d1 100644
--- a/cdc/sink/dmlsink/cloudstorage/dml_worker.go
+++ b/cdc/sink/dmlsink/cloudstorage/dml_worker.go
@@ -230,23 +230,25 @@ func (d *dmlWorker) writeDataFile(ctx context.Context, path string, task *single
 	var callbacks []func()
 	buf := bytes.NewBuffer(make([]byte, 0, task.size))
 	rowsCnt := 0
+	bytesCnt := int64(0)
 	for _, msg := range task.msgs {
-		d.metricWriteBytes.Add(float64(len(msg.Value)))
+		bytesCnt += int64(len(msg.Value))
 		rowsCnt += msg.GetRowsCount()
 		buf.Write(msg.Value)
 		callbacks = append(callbacks, msg.Callback)
 	}
 
-	if err := d.statistics.RecordBatchExecution(func() (int, error) {
+	if err := d.statistics.RecordBatchExecution(func() (int, int64, error) {
 		err := d.storage.WriteFile(ctx, path, buf.Bytes())
 		if err != nil {
-			return 0, err
+			return 0, 0, err
 		}
-		return rowsCnt, nil
+		return rowsCnt, bytesCnt, nil
 	}); err != nil {
 		return err
 	}
 
+	d.metricWriteBytes.Add(float64(bytesCnt))
 	d.metricFileCount.Add(1)
 	for _, cb := range callbacks {
 		if cb != nil {
diff --git a/cdc/sink/dmlsink/mq/worker.go b/cdc/sink/dmlsink/mq/worker.go
index 5e525ba55c5..8f4ca155de7 100644
--- a/cdc/sink/dmlsink/mq/worker.go
+++ b/cdc/sink/dmlsink/mq/worker.go
@@ -304,16 +304,16 @@ func (w *worker) sendMessages(ctx context.Context) error {
 			}
 			for _, message := range future.Messages {
 				start := time.Now()
-				if err = w.statistics.RecordBatchExecution(func() (int, error) {
+				if err = w.statistics.RecordBatchExecution(func() (int, int64, error) {
 					message.SetPartitionKey(future.PartitionKey)
 					if err := w.producer.AsyncSendMessage(
 						ctx,
 						future.Topic,
 						future.Partition,
 						message); err != nil {
-						return 0, err
+						return 0, 0, err
 					}
-					return message.GetRowsCount(), nil
+					return message.GetRowsCount(), int64(message.Length()), nil
 				}); err != nil {
 					return err
 				}
diff --git a/cdc/sink/dmlsink/txn/mysql/mysql.go b/cdc/sink/dmlsink/txn/mysql/mysql.go
index 447d1a00710..c0f3fe8e61d 100644
--- a/cdc/sink/dmlsink/txn/mysql/mysql.go
+++ b/cdc/sink/dmlsink/txn/mysql/mysql.go
@@ -750,10 +750,10 @@ func (s *mysqlBackend) execDMLWithMaxRetries(pctx context.Context, dmls *prepare
 		})
 		failpoint.Inject("MySQLSinkHangLongTime", func() { _ = util.Hang(pctx, time.Hour) })
 
-		err := s.statistics.RecordBatchExecution(func() (int, error) {
+		err := s.statistics.RecordBatchExecution(func() (int, int64, error) {
 			tx, err := s.db.BeginTx(pctx, nil)
 			if err != nil {
-				return 0, logDMLTxnErr(
+				return 0, 0, logDMLTxnErr(
 					cerror.WrapError(cerror.ErrMySQLTxnError, err),
 					start, s.changefeed, "BEGIN", dmls.rowCount, dmls.startTs)
 			}
@@ -767,12 +767,12 @@ func (s *mysqlBackend) execDMLWithMaxRetries(pctx context.Context, dmls *prepare
 				err = s.multiStmtExecute(pctx, dmls, tx, writeTimeout)
 				if err != nil {
 					fallbackToSeqWay = true
-					return 0, err
+					return 0, 0, err
 				}
 			} else {
 				err = s.sequenceExecute(pctx, dmls, tx, writeTimeout)
 				if err != nil {
-					return 0, err
+					return 0, 0, err
 				}
 			}
 
@@ -790,15 +790,15 @@ func (s *mysqlBackend) execDMLWithMaxRetries(pctx context.Context, dmls *prepare
 						log.Warn("failed to rollback txn", zap.Error(rbErr))
 					}
 				}
-				return 0, err
+				return 0, 0, err
 			}
 
 			if err = tx.Commit(); err != nil {
-				return 0, logDMLTxnErr(
+				return 0, 0, logDMLTxnErr(
 					cerror.WrapError(cerror.ErrMySQLTxnError, err),
 					start, s.changefeed, "COMMIT", dmls.rowCount, dmls.startTs)
 			}
-			return dmls.rowCount, nil
+			return dmls.rowCount, dmls.approximateSize, nil
 		})
 		if err != nil {
 			return errors.Trace(err)
diff --git a/cdc/sink/metrics/metrics.go b/cdc/sink/metrics/metrics.go
index 0fdf258e886..1f7cfa7868f 100644
--- a/cdc/sink/metrics/metrics.go
+++ b/cdc/sink/metrics/metrics.go
@@ -36,6 +36,15 @@ var (
 			Buckets:   prometheus.ExponentialBuckets(1, 2, 18),
 		}, []string{"namespace", "changefeed", "type"}) // type is for `sinkType`
 
+	// ExecWriteBytesGauge records the total number of bytes written by sink.
+	TotalWriteBytesCounter = prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Namespace: "ticdc",
+			Subsystem: "sink",
+			Name:      "write_bytes_total",
+			Help:      "Total number of bytes written by sink",
+		}, []string{"namespace", "changefeed", "type"}) // type is for `sinkType`
+
 	// LargeRowSizeHistogram records size of large rows.
 	LargeRowSizeHistogram = prometheus.NewHistogramVec(
 		prometheus.HistogramOpts{
@@ -69,6 +78,7 @@ var (
 // InitMetrics registers all metrics in this file.
 func InitMetrics(registry *prometheus.Registry) {
 	registry.MustRegister(ExecBatchHistogram)
+	registry.MustRegister(TotalWriteBytesCounter)
 	registry.MustRegister(ExecDDLHistogram)
 	registry.MustRegister(LargeRowSizeHistogram)
 	registry.MustRegister(ExecutionErrorCounter)
diff --git a/cdc/sink/metrics/statistics.go b/cdc/sink/metrics/statistics.go
index 406c09e9cdd..c02001b3d05 100644
--- a/cdc/sink/metrics/statistics.go
+++ b/cdc/sink/metrics/statistics.go
@@ -39,6 +39,7 @@ func NewStatistics(ctx context.Context,
 	s := sinkType.String()
 	statistics.metricExecDDLHis = ExecDDLHistogram.WithLabelValues(namespcae, changefeedID, s)
 	statistics.metricExecBatchHis = ExecBatchHistogram.WithLabelValues(namespcae, changefeedID, s)
+	statistics.metricTotalWriteBytesCnt = TotalWriteBytesCounter.WithLabelValues(namespcae, changefeedID, s)
 	statistics.metricRowSizeHis = LargeRowSizeHistogram.WithLabelValues(namespcae, changefeedID, s)
 	statistics.metricExecErrCnt = ExecutionErrorCounter.WithLabelValues(namespcae, changefeedID, s)
 	return statistics
@@ -55,6 +56,8 @@ type Statistics struct {
 	metricExecDDLHis prometheus.Observer
 	// Histogram for DML batch size.
 	metricExecBatchHis prometheus.Observer
+	// Counter for total bytes of DML.
+	metricTotalWriteBytesCnt prometheus.Counter
 	// Histogram for Row size.
 	metricRowSizeHis prometheus.Observer
 	// Counter for sink error.
@@ -73,13 +76,14 @@ func (b *Statistics) ObserveRows(rows ...*model.RowChangedEvent) {
 }
 
 // RecordBatchExecution stats batch executors which return (batchRowCount, error).
-func (b *Statistics) RecordBatchExecution(executor func() (int, error)) error {
-	batchSize, err := executor()
+func (b *Statistics) RecordBatchExecution(executor func() (int, int64, error)) error {
+	batchSize, batchWriteBytes, err := executor()
 	if err != nil {
 		b.metricExecErrCnt.Inc()
 		return err
 	}
 	b.metricExecBatchHis.Observe(float64(batchSize))
+	b.metricTotalWriteBytesCnt.Add(float64(batchWriteBytes))
 	return nil
 }
 
diff --git a/tests/integration_tests/avro_basic/conf/changefeed.toml b/tests/integration_tests/avro_basic/conf/changefeed.toml
index cdcff71a143..5623cb37452 100644
--- a/tests/integration_tests/avro_basic/conf/changefeed.toml
+++ b/tests/integration_tests/avro_basic/conf/changefeed.toml
@@ -1,3 +1,3 @@
 [integrity]
-integrity-check-level = "correctness"
+integrity-check-level = "none"
 corruption-handle-level = "warn"
diff --git a/tests/integration_tests/avro_basic/run.sh b/tests/integration_tests/avro_basic/run.sh
index 6865f5176e5..43e6b60e703 100644
--- a/tests/integration_tests/avro_basic/run.sh
+++ b/tests/integration_tests/avro_basic/run.sh
@@ -36,7 +36,7 @@ function run() {
 	curl -X PUT -H "Content-Type: application/vnd.schemaregistry.v1+json" --data '{"compatibility": "NONE"}' http://127.0.0.1:8088/config
 
 	# upstream tidb cluster enable row level checksum
-	run_sql "set global tidb_enable_row_level_checksum=true" ${UP_TIDB_HOST} ${UP_TIDB_PORT}
+	# run_sql "set global tidb_enable_row_level_checksum=true" ${UP_TIDB_HOST} ${UP_TIDB_PORT}
 
 	TOPIC_NAME="ticdc-avro-test"
 	# record tso before we create tables to skip the system table DDLs