从数据库检索值时内存使用率高

我的问题是:

1. 这是预期行为吗?
2. 当我只想避免如此巨大的内存分配时 检索一个文档?

下面是完全可复制的profiler示例和屏幕截图:

class Program
{
    private static string _path;

    static void Main(string[] args)
    {
        _path = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "testDb");

        // Comment after first insert to avoid adding the same object.
        AddData();

        var data = GetData();

        Console.ReadLine();
    }

    public static void AddData()
    {
        var items = new List<Item>();
        for (var index = 0; index < 16; index++)
        {
            var item = new Item {Values = Enumerable.Range(0, 185_000).Select(v => (double) v).ToList()};
            items.Add(item);
        }
        var testData = new TestClass { Name = "Test1", Items = items.ToList() };

        using (var db = new LiteDatabase(_path))
        {
            var collection = db.GetCollection<TestClass>();
            collection.Insert(testData);
        }
    }

    public static TestClass GetData()
    {
        using (var db = new LiteDatabase(_path))
        {
            var collection = db.GetCollection<TestClass>();
            // This line causes huge memory allocation and wakes up garbage collector many many times.
            return collection.FindOne(Query.EQ(nameof(TestClass.Name), "Test1"));
        }
    }
}

public class TestClass
{
    public int Id { get; set; }
    public string Name { get; set; }
    public IList<Item> Items { get; set; }
}

public class Item
{
    public IList<double> Values { get; set; }
}

改变 185_000 到 1_850_000 使我的RAM使用转到>4GB!!)