【摘 要】
：
Running device drivers as unprivileged user-level code, encapsulated into their own process, has often been proposed as a technique for increasing system robust
【机 构】
：
National ICT Australia and School of Computer Science and Engineering,Stefan G(o)tz(Wilhelm-Schickar
论文部分内容阅读
Running device drivers as unprivileged user-level code, encapsulated into their own process, has often been proposed as a technique for increasing system robustness. However, in the past, systems based on user-level drivers have generally exhibited poor I/O performance. Consequently, user-level device drivers have never caught on to any significant degree. In this paper we demonstrate that it is possible to build systems which employ user-level device drivers, without significant performance degradation, even for high-bandwidth devices such as Gigabit Ethernet.
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