The IX Operating System

IX: A Protected Dataplane Operating System for High Throughput and Low Latency

The conventional wisdom is that aggressive networking requirements, such as high packet rates for small messages and microsecond-scale tail latency, are best addressed outside the kernel, in a user-level networking stack. We present IX, a dataplane operating system that provides high I/O performance, while maintaining the key advantage of strong protection offered by existing kernels. IX uses h...

Distributed Application Operating System Operating System Api

Middleware is a class of software technologies designed to help manage the complexity and heterogeneity inherent in distributed systems. It is defined as a layer of software above the operating system but below the application program that provides a common programming abstraction across a distributed system, as shown in Figure 1. In doing so, it provides a higher-level building block for progr...

The Alta Operating System

Many modern systems, including web servers, database engines, and operating system kernels, are using language-based protection mechanisms to provide the safety and integrity traditionally supplied by hardware. As these language-based systems become used in more demanding situations, they are faced with the same problems that traditional operating systems have solved—namely shared resource mana...

The Hello Operating System

The Newton Operating System

The Newton MessagePad Personal Digital Assistant (PDA) is the first in a class of devices distinguished by their pen-based user interface, communications capability, small size, and low cost. A PDA operating system needs to support the simultaneous demands of user interface, applications, and communications. It must operate in an environment that has little main memory, no secondary storage, an...