使用Entity Manager将数据插入MySQL DB需要太长时间

Question

我正在尝试将大量数据（大约100k）插入MYSQL数据库。见下文：

        EntityManager em = emf.createEntityManager();


        EntityTransaction transaction = em.getTransaction();

        long startTime = System.nanoTime();
        transaction.begin();
        for(int y = 0; y < 100000; y++) {

            RealVector real = new RealVector(10000);
            for(int i = 0; i < 10000; i++) {
                real.getCoordinates().add((float) i);
            }

            em.persist(real);
        }

        transaction.commit();

该课程看起来像这样：

    @TableGenerator(name = "vector_gen", table = "id_gen", pkColumnName = "gen_name", valueColumnName = "gen_val", pkColumnValue = "REAL_VECTOR", allocationSize = 100)
    @Id
    @GeneratedValue(strategy = GenerationType.TABLE, generator = "vector_gen")
    private int id;
    private int dimension;
    @ElementCollection
    private List<Float> coordinates;

    public RealVector() {

    }

    public RealVector(int dimension) {
        this.dimension = dimension;
        this.coordinates = new ArrayList<Float>();
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public int getDimension() {
        return dimension;
    }

    public void setDimension(int dimension) {
        this.dimension = dimension;
    }

    public List<Float> getCoordinates() {
        return coordinates;
    }

    public void setCoordinates(List<Float> coordinates) {
        this.coordinates = coordinates;
    }

总而言之，我试图将100k类型的RealVector对象插入到数据库中。每个RealVector对象都有一个包含10k个对象的数组。但这需要数小时才能完成并且需要大量内存。我是MYSQL和JPA的新手。有什么方法可以改进它，使其更快，如果可能的话，消耗更少的内存？