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Ring Buffer, 循环缓冲区的编写和测试,标准kfifo和POSIX的ring buffer.并使用/dev/mem代替实际物理设备来实现mmap方式数据读取

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ring-buffer

1.最终参考下面通过时间 构造测试数据,首先测试kfifo性能 http://www.cnblogs.com/Anker/p/3481373.html

2.结合mmap函数,将mmap出来的数据当做测试数据,来测试kfifo的性能 注意mmap对应块设备如磁盘 USB等,但是不能对应流设备如串口等 另外参数length的长度必须是4096 的整数倍

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Ring Buffer, 循环缓冲区的编写和测试,标准kfifo和POSIX的ring buffer.并使用/dev/mem代替实际物理设备来实现mmap方式数据读取

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