由于读取数据比较多，目录采用了多线程去读取。但效果不佳。从输出日志看，是等待一个线程读取完毕再到一下个线程。请问怎么解决？
【2016-02-29 16:13:26】执行DBGridDataReaderV1d0.ReadData()函数共开销22.5003ms
【2016-02-29 16:13:26】执行DBGridDataReaderV1d0.ReadData()函数共开销25.0004ms
【2016-02-29 16:13:26】执行DBGridDataReaderV1d0.ReadData()函数共开销30.0004ms
【2016-02-29 16:13:26】执行DBGridDataReaderV1d0.ReadData()函数共开销35.0005ms
【2016-02-29 16:13:26】执行DBGridDataReaderV1d0.ReadData()函数共开销50.0008ms
【2016-02-29 16:13:26】执行DBGridDataReaderV1d0.ReadData()函数共开销55.0008ms
【2016-02-29 16:13:26】执行DBGridDataReaderV1d0.ReadData()函数共开销57.5008ms
【2016-02-29 16:13:26】执行DBGridDataReaderV1d0.ReadData()函数共开销62.501ms
【2016-02-29 16:13:26】执行DBGridDataReaderV1d0.ReadData()函数共开销77.5011ms
【2016-02-29 16:13:26】执行DBGridDataReaderV1d0.ReadData()函数共开销82.5013ms
【2016-02-29 16:13:26】执行DBGridDataReaderV1d0.ReadData()函数共开销105.0016ms
【2016-02-29 16:13:26】执行DBGridDataReaderV1d0.ReadData()函数共开销110.0017ms
【2016-02-29 16:13:26】执行DBGridDataReaderV1d0.ReadData()函数共开销107.5017ms
【2016-02-29 16:13:26】执行DBGridDataReaderV1d0.ReadData()函数共开销110.0017ms
【2016-02-29 16:13:26】执行DBGridDataReaderV1d0.ReadData()函数共开销112.5017ms
【2016-02-29 16:13:26】执行DBGridDataReaderV1d0.ReadData()函数共开销115.0018ms
【2016-02-29 16:13:26】执行DBGridDataReaderV1d0.ReadData()函数共开销115.0018ms
【2016-02-29 16:13:26】执行DBGridDataReaderV1d0.ReadData()函数共开销117.5018ms
【2016-02-29 16:13:26】执行DBGridDataReaderV1d0.ReadData()函数共开销125.0019ms
【2016-02-29 16:13:26】执行DBGridDataReaderV1d0.ReadData()函数共开销132.502ms
【2016-02-29 16:13:26】执行DBGridDataReaderV1d0.ReadData()函数共开销137.5021ms
【2016-02-29 16:13:26】执行DBGridDataReaderV1d0.ReadData()函数共开销155.0023ms
【2016-02-29 16:13:26】执行DBGridDataReaderV1d0.ReadData()函数共开销170.0026ms
【2016-02-29 16:13:26】执行DBGridDataReaderV1d0.ReadData()函数共开销170.0026ms
【2016-02-29 16:13:26】执行DBGridDataReaderV1d0.ReadData()函数共开销217.5034ms
【2016-02-29 16:13:27】执行DBGridDataReaderV1d0.ReadData()函数共开销225.0035ms
【2016-02-29 16:13:27】执行DBGridDataReaderV1d0.ReadData()函数共开销230.0035ms
【2016-02-29 16:13:27】执行DBGridDataReaderV1d0.ReadData()函数共开销240.0037ms
【2016-02-29 16:13:27】执行DBGridDataReaderV1d0.ReadData()函数共开销245.0038ms
多个线程是不是各自去连接的mongodb数据库等。
是的，有否一些好建议。