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用创龙的核心板测量SATA硬盘的写速度为20M/s，测试了机械硬盘、SSD，mSATA速度都几乎差不多，我想问一下导致SATA写速度的瓶颈是什么？是OMAP-L138芯片本身还是核心板？肯定不是SATA硬盘的类型，因为已经测试过了。谢谢回答！
http://processors.wiki.ti.com/index.php/DaVinci_PSP_03.22.00.02_Device_Driver_Features_and_Performance_Guide#SATA_-_ext2_File_System_Performance
写20M左右 读30M+
处理器速度所限
