AIX Operating System (Unix) Internet: AIX Operating System (Unix) AmigaOS Operating System Internet: AmigaOS Operating System AtheOS Operating System Internet: AtheOS Operating System BeIA Operating System Internet: BeIA Operating System BeOS Operating System Internet: BeOS Operating System BSDi Operating System (BSD) Internet: BSDi Operating System (BSD) CP/M Operating System Internet: CP/M Op...

Extensibility enables system services to be adapted to changing hardware and software trends. Providing extensible system services need not necessarily entail construction of new operating systems or inefficient implementations. Rather it can be effectively incorporated into existing commercial operating systems. We have incorporated the programming and run-time support necessary to build exten...

Five years ago I presented drivers for using standard PC’s with soundcards as packet radio modems [13]. The mainstream CPUs of that era were not quite powerful enough for complex signal processing, so the design at that time had to trade robustness for computational simplicity. Futhermore, operating system preferences have changed since. It is therefore time to rethink the design. In this artic...

Process management simulation manages the execution of simulated processes. Each simulated process is comprised of a program that manipulates (sets/updates) the value of a single integer variable. Thus the state of a simulated process at any instant is comprised of the value of its integer variable and the value of its program counter. A simulated process’ program consists of a sequence of inst...

The continuity of Moore’s law provides chip designers with an ever growing amount of transistors. These can be used to put more cores on a single chip in order to gain performance through parallelism. However, this is not the most energy efficient approach to speed up computation. Yet, the power budget is a limiting factor for a chip’s obtainable performance. Specialized accelerators provide be...

Operating systems research has traditionally consisted of adding functionality to the operating system or inventing and evaluating new methods for performing functions. Regardless of the research goal, the single constant has been that the size and complexity of operating systems increase over time. As a result, operating systems are usually the single most complex piece of software in a comput...

Single address-space operating systems offer many advantages for modern systems design. We outline in this paper how such a system deals with the issues of memory protection, user-level naming, resource management, and translation management in a large, sparse address space, as well as fault tolerance and reliability. We also explain how a POSIX compliant interface can be supported on such a sy...

The premise behind this thesis is the observation that Operating Systems (OS), being the foundation behind operations of computing systems, are complex entities and also subject to failures. Consequently, when they do fail, the impact is the loss of system service and the applications running thereon. While a multitude of sources for OS failures exist, device drivers are often identified as a p...

The robustness of an operating system is, in some cases, more important than its performance [4, 3]. The experience with existing operating systems, and in fact with every large on-going software package, is that it almost has its own independent behavior. The behavior is tuned up and modified by system administrators that constantly and continuously monitor it. The system is usually complicate...