diff --git a/cmd/seaweedfs-csi-driver/main.go b/cmd/seaweedfs-csi-driver/main.go
index d6d9e28..58af0aa 100644
--- a/cmd/seaweedfs-csi-driver/main.go
+++ b/cmd/seaweedfs-csi-driver/main.go
@@ -15,7 +15,7 @@ var (
 	endpoint          = flag.String("endpoint", "unix://tmp/seaweedfs-csi.sock", "CSI endpoint to accept gRPC calls")
 	nodeID            = flag.String("nodeid", "", "node id")
 	version           = flag.Bool("version", false, "Print the version and exit.")
-	concurrentWriters = flag.Int("concurrentWriters", 128, "limit concurrent goroutine writers if not 0")
+	concurrentWriters = flag.Int("concurrentWriters", 32, "limit concurrent goroutine writers if not 0")
 )
 
 func main() {