Linux is not only a perfect platform for experimentation and characterization of real-time algorithms, you can also find real time in Linux today in the standard off-the-shelf 2.6 kernel.
Linux不仅是一个实验和描述实时算法的理想平台，目前在标准的2.6内核中也实现了实时功能。
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But the kernel security can not be perfect. The security kernel model can improves kernel security.