Don't call maybe_flush_socket() quite so often.

generator.c

@@ -1206,7 +1206,7 @@ void generate_files(int f_out, struct file_list *flist, char *local_name)
 
 		if (allowed_lull && !(i % lull_mod))
 			maybe_send_keepalive();
-		else if (!(i % 50))
+		else if (!(i % 200))
 			maybe_flush_socket();
 	}
 	recv_generator(NULL, NULL, 0, 0, 0, code, -1);
@@ -1284,7 +1284,7 @@ void generate_files(int f_out, struct file_list *flist, char *local_name)
 				       maybe_PERMS_REPORT, code, -1);
 			if (allowed_lull && !(++j % lull_mod))
 				maybe_send_keepalive();
-			else if (!(j % 50))
+			else if (!(j % 200))
 				maybe_flush_socket();
 		}
 	}