SIGOPS

The microkernel concept has once been the most advocated approach for operating system development. Unfortunately, before its publicized advantages have been fully realized in an operating system implementation, current operating system researchers ...

We propose some architectural principles we have found useful for the support of continuous media applications in a microkernel environment. In particular, we discuss i) the principle of upcall-driven application structuring whereby communications ...

In the past, several process migration facilities for distributed systems have been developed. Due to the complex nature of the subject, all those facilities have limitations that make them usable for only limited classes of applications and ...

Operating systems employ virtual memory mechanism to provide large address space for programs. The efficiency of the virtual address translation plays an important role in determining system performance. In conventional virtual memory management systems,...

Many factors have contributed to the birth and continued growth of mobile computing, including recent advances in hardware and communications technology. With this new paradigm however come new challenges in computer operating systems development. These ...

Moving resource management out of the operating system kernel facilitates a high degree of customisation. The lowest layer of the Arena system provides an abstract interface to conventional processor hardware (Mayes, 1993; Quick, 1995). The idea is to ...

In multimedia environments, applications use continuous-media data, such as video data and audio data, to provide users with a wide variety of interaction schemes with computers. Continuous-media applications require more efficient and flexible support ...

Several 3-party-based authentication protocols have been proposed, which are resistant to off-line password guessing attacks. We show that they are not resistant to a new type of attack called "undetectable on-line password guessing attack". The ...

In an open distributed system, resources must be shared among various users. Security is one of the major issues in designing such a system. When a computer system is connected to a network, it is very important to ensure that the computer has the ...