MySQL loop inserts tens of millions of data

CREATE TABLE `mysql_genarate` (
 `id` int(11) NOT NULL AUTO_INCREMENT,
 `uuid` varchar(50) DEFAULT NULL,
 PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=5999001 DEFAULT CHARSET=utf8;

CREATE DEFINER=`root`@`localhost` PROCEDURE `test_two1`()
  BEGIN 
  DECLARE i INT DEFAULT 0;
  WHILE i < 3000 DO
    INSERT INTO mysql_genarate ( uuid ) VALUES( UUID() );
    SET i = i + 1;
  END WHILE;
END

CREATE DEFINER=`root`@`localhost` PROCEDURE `insertPro`( IN sum INT )
  BEGIN
  DECLARE count INT DEFAULT 0;
  DECLARE i INT DEFAULT 0;
  SET @exesql = concat( "insert into mysql_genarate(uuid) values" );
  SET @exedata = "";
  SET count = 0;
  SET i = 0;
  WHILE count < sum DO
    SET @exedata = concat( @exedata, ",(UUID())" );
    SET count = count + 1;
    SET i = i + 1;
    IF i % 1000 = 0 THEN
      SET @exedata = SUBSTRING( @exedata, 2 );
      SET @exesql = concat( "insert into mysql_genarate(uuid) values ​​", @exedata );
      PREPARE stmt FROM @exesql;
      EXECUTE stmt;
      DEALLOCATE PREPARE stmt;
      SET @exedata = "";
    END IF;
  END WHILE;
  IF length( @exedata ) > 0 THEN
    SET @exedata = SUBSTRING( @exedata, 2 );
    SET @exesql = concat( "insert into mysql_genarate(uuid) values ​​", @exedata );
    PREPARE stmt FROM @exesql;
    EXECUTE stmt;
    DEALLOCATE PREPARE stmt;
  END IF;
END