Linked by Thom Holwerda on Mon 13th Mar 2006 13:38 UTC, submitted by Norman Feske
OSNews, Generic OSes The OS Group of Technische Universitaet Dresden (TUD:OS) has released a live demo CD of their custom operating system project. TUD:OS is a microkernel-based operating system targeted at secure and real-time systems. Some highlights of the demo CD include a new approach for securing graphical user interfaces called Nitpicker, multiple L4Linux kernels running at the same time on top of a custom L4 microkernel, a survey on the reuse of device drivers on the TUD:OS platform, native Qt-applications, the DOpE windowing system, games, and much more. More information is available at the demo CD website. And yes, boys and girls, there are screenshots, too.
Thread beginning with comment 104026
To read all comments associated with this story, please click here.
by GreatBunzinni on Mon 13th Mar 2006 16:44 UTC
Member since:

How does this OS compares to the good old MINIX 3?

Reply Score: 0

RE: Minix3?
by braddock on Mon 13th Mar 2006 16:56 in reply to "Minix3?"
braddock Member since:

I don't know Minix3 in particular, but in general Minix is a traditional microkernel architecture. L4 is usually refered to as a "nanokernel"; it is an order of magnitude smaller than a typical microkernel, and has only the minimal amount of priviledged functionality needed. I think the original l4 implementation was 13kbytes.

All higher-level functionality is implemented by user-space servers. It is sort of the same philosophy as a microkernel, but taken to the purist extreme to keep implementation clean, optimized, efficient, and secure.

It is notable that one user-space server that has been implemented is the Linux kernel, and another was the Hurd/Mach microkernel, both of which were "hung" onto the L4 in such a way that multiple instances of them can run simultaneously, with approximately a 5% performance penalty.

Reply Parent Score: 5