VEE

Virtualization technologies have been developed by a number of computer science and engineering disciplines, sometimes independently, often by different groups and at different times. Not surprisingly, these groups each view virtualization as a sub-...

With the increased use of "Virtual Machines" (VMs) as vehicles that isolate applications running on the same host, it is necessary to devise techniques that enable multiple VMs to share underlying resources both fairly and efficiently. To that end, one ...

Virtual Machine (VM) environments (e.g., VMware and Xen) are experiencing a resurgence of interest for diverse uses including server consolidation and shared hosting. An application's performance in a virtual machine environment can differ markedly from ...

One challenge for runtime systems like the Java™ platform that depend on garbage collection is the ability to scale performance with the number of allocating threads. As the number of such threads grows, allocation of memory in the heap becomes a point ...

We present a new software system architecture for the implementation of hard real-time applications. The core of the system is a microkernel whose reactivity (interrupt handling as in synchronous reactive programs) and proactivity (task scheduling as in ...

Modern transactional response-time sensitive applications have run into practical limits on the size of garbage collected heaps. The heap can only grow until GC pauses exceed the response-time limits. Sustainable, scalable concurrent collection has ...

We introduce an extension of mostly copying collection that uses page residency to determine when to relocate objects. Our collector promotes pages with high residency in place, avoiding unnecessary work and wasted space. It predicts the residency of ...

The capabilities of applications executing on embedded and mobile devices are strongly influenced by memory size limitations. In fact, memory limitations are one of the main reasons that applications run slowly or even crash in embedded/mobile devices. ...

The reverse execution of programs is a function where programs are executed backward in time. A reversible debugger is a debugger that provides such a functionality. In this paper, we propose a novel reversible debugger that enables reverse execution of ...

A dynamic binary translator is a just-in-time compiler that translates source architecture binaries into target architecture binaries on the fly. It enables the fast running of the source architecture binaries on the target architecture. Traditional ...

Virtual execution environments have become increasingly useful in system implementation, with dynamic translation techniques being an important component for performance-critical systems. Many devices have exceptionally tight performance and memory ...

Application servers provide an environment for running business and web applications. By virtualizing threads, data and processing resources, memory and users, they provide the simplifying illusion for the programmer that the application is interacting ...

In object-oriented programming languages, an object is said to escape the method or thread in which it was created if it can also be accessed by other methods or threads. Knowing which objects do not escape allows a compiler to perform aggressive ...

We introduce a strategy for inlining native functions into Java™ applications using a JIT compiler. We perform further optimizations to transform inlined callbacks into semantically equivalent lightweight operations. We show that this strategy can ...

We present an optimized implementation of the linear scan register allocation algorithm for Sun Microsystems' Java HotSpot™ client compiler. Linear scan register allocation is especially suitable for just-in-time compilers because it is faster than the ...

Language mechanisms deserve language implementation effort. While this maxim has led to sophisticated support for language features specific to object-oriented, functional and logic programming languages, aspect-oriented programming languages are still ...

Virtual machines (VMs) are commonly used to distribute programs in an architecture-neutral format, which can easily be interpreted or compiled. A long-running question in the design of VMs is whether stack architecture or register architecture can be ...

Instrumentation is commonly used to track application behavior: to collect program profiles; to monitor component health and performance; to aid in component testing; and more. Program annotation enables developers and tools to pass extra information to ...

The Progressive Deployment System (PDS) is a virtual execution environment and infrastructure designed specifically for deploying software, or "assets", on demand while enabling management from a central location. PDS intercepts a select subset of ...

Desktop distributed computing allows companies to exploit the idle cycles on pervasive desktop PC systems to increase the available computing power by orders of magnitude (10x - 1000x). Applications are submitted, distributed, and run on a grid of ...

In this paper, a virtual distributed monitoring environment called HyperSpector is described that achieves secure intrusion detection in distributed computer systems. While multiple intrusion detection systems (IDSes) can protect a distributed system ...