Sqlite插入很慢

Question

我试图理解为什么Sqlite插入在我们的系统中非常慢。所以我写了一个小测试项目。它所做的就是在表中写入1行。这个小插件需要150毫秒！

我知道下面会打开一个交易。这仍然太长了。

我尝试过添加PRAGMA synchronous = OFF和PRAGMA locking_mode = exclusive。没变。

这是测试代码：

class Program
{
    static SQLiteConnection m_dbConnection;

    static void Main(string[] args)
    {
        initDB();

        writeToDb();

        m_dbConnection.Close();

        Console.ReadKey();
    }

    private static void writeToDb()
    {
        Stopwatch sw = new Stopwatch();

        string sql = "insert into highscores (name, score) values ('Me', 9001)";
        SQLiteCommand command = new SQLiteCommand(sql, m_dbConnection);

        sw.Restart();
        command.ExecuteNonQuery();

        Console.WriteLine("Writing to db took {0}ms", sw.ElapsedMilliseconds);
    }

    private static void initDB()
    {
        SQLiteConnection.CreateFile("MyDatabase.sqlite");

        m_dbConnection = new SQLiteConnection("Data Source=MyDatabase.sqlite;Version=3;");
        m_dbConnection.Open();

        string sql = "CREATE TABLE highscores (name VARCHAR(20), score INT)";
        SQLiteCommand command = new SQLiteCommand(sql, m_dbConnection);
        command.ExecuteNonQuery();
    }