Michael Dolan Dot Com

Tuesday, December 4th, 2007

Linux continues to evolve adding specialized purpose function into a general purpose OS

The great thing about Linux is that it’s a general purpose operating system that can be molded into a platform for anything from mobile devices, to printer embedded OS functionality to supercomputer and mainframes. Linux can also bring in certain features that may not apply to everyone but which cater to users with very specific needs. Like it or not as a mainstream security feature, SELinux has come quite far as evidenced in the latest RHEL5. SELinux also caters well to specific users with high security requirements. For those users, SELinux is probably easier to use than their other options and it is tailored to the needs they have.

Linux is now heading into another direction focusing on the specific needs for users with very low latency and determinism requirements. This can apply to anything from weapons systems for military applications, to Wall Street customers sell side trading systems, and even to SMS messaging in the telecommunications industry.

And so we’re beginning to see great strides shaping Linux for the needs of these user segments that demand low latency and determinism in both their operating system and applications. Platforms like IBM’s WebSphere Real Time and even Sun’s real time Java are currently running (or in Sun’s case, being ported to run) on a real time Linux operating system. With a real time Java machine, suddenly Java applications can inherit the benefits of a real time system. And so antiquated real time languages are suddenly… antiquated officially because a real time Linux and Java solution can marry a general purpose OS with a general purpose programming language for the best of both worlds. IBM has made great gains in the technology adding both a real time Java garbage collector and Ahead-of-Time compilation to make this a great solution compelling enough for the US Navy’s mission critical weapons systems.

Recently Novell has announced their SLERT product updates with great monitoring tools from Concurrent bundled in (and tighter integration of the kernel community real time patches – now a community standard?). I expect we’ll also soon hear more about Red Hat’s real time plans as well so stay tuned…