Bare Metal - Speeding up Java Technology in a Virtualized Environment
TS-3792

Virtualization software is rapidly making inroads in server environments, including fairly small and inexpensive x86 and x86-64 servers. Many Enterprise Java technology deployments run one app.server/Java VM per machine. Virtualization software makes it possible to run multiple operating systems on the same box. If the only thing you need to run on one of these virtual server boxes is a single Java VM, do you really need an operating system?

This session outlines a pilot project at BEA Systems that found out what could be gained by removing the operating system from a virtualized environment. It covers how this solution works and analyzes its advantages and disadvantages. It also discusses what happened with I/O, networking and device drivers, and Java Native Interface code without an operating system and how this project managed to utilize the existing operating systems to avoid implementing this kind of functionality. The session also compares this technology with the Multitasking Virtual Machine (MVM) technology from Sun Labs and shows how this solution could potentially be an alternative complement to the MVM technology by implementing isolates (JSR 121) at a different level.

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