Good news and great contribution from HP. You can study all those advanced features for academic project.
AdvFS is a file system that was developed by Digital Equipment Corp and continues to be part of HP's
Tru64 operating system. It offers many advanced features. Continuing its efforts to advance customer adoption of Linux, HP today announced the contribution of its Tru64 UNIX Advanced File System (AdvFS) source code to the open source community. The code on this site is licensed under the GPLv2 to be compatible with the Linux kernel.
The AdvFS source code includes capabilities that increase uptime, enhance security and help ensure maximum performance of Linux file systems. HP will contribute the code as a reference implementation of an enterprise Linux file system under the terms of General Public License Version 2 for compatibility with the Linux kernel, as well as provide design documentation, test suites and engineering resources.
Now the million dollar question - Is there any reason to pick AdvFS fs over any of the other 20+ file systems such as XFS/ext2/ext3 under Linux?
Linux can be used a real time operating system ( RTOS ) for thermostats, household appliance controllers, mobile telephones, industrial robots, spacecraft, industrial control and scientific research equipment.
Linux is not only a perfect platform for experimentation and characterization of real-time algorithms, you can also find real time in Linux today in the standard off-the-shelf 2.6 kernel. You can get soft real-time performance from the standard kernel or, with a little more work (kernel patch), you can build hard real-time applications.
This article explores some of the Linux architectures that support real-time characteristics and discusses what it really means to be a real-time architecture. Several solutions endow Linux with real-time capabilities, and in this article author examine the thin-kernel (or micro-kernel) approach, the nano-kernel approach, and the resource-kernel approach. Finally, author describe the real-time capabilities in the standard 2.6 kernel and show you how to enable and use them.
RHEL 5.2 beta has been released. Red Hat engineers backport many of the new features from later kernels to the Red Hat Enterprise Linux 5 kernel, such as support for new hardware and virtualization enhancements. This provides Red Hat Enterprise Linux subscribers with important new capabilities while maintaining stable application interfaces -- so that applications continue to run after new updates are installed. And, of course, it’s always worth repeating that updates, which are released about twice a year, are included with every Red Hat Enterprise Linux subscription.
This will give our you a chance to see what your systems will be running later this year. You can grab beta version from RHN.
=> Press Release : Red Hat Enterprise Linux 5.2 Beta
The new Linux scheduler extends scheduling capabilities by introducing scheduling classes and also simplifies debugging by improving schedule statistics. Completely Fair Scheduler (CFS) is getting good reviews when tested for thread-intensive applications including 3D games. CFS handles CPU resource allocation for executing processes, and aims to maximize overall CPU utilization while maximizing interactive performance. CFS considered as the first implementation of a fair queuing process scheduler in a widely used general-purpose operating system.
The Linux 2.6.23 kernel comes with a modular scheduler core and a CFS, which is implemented as a scheduling module. In this article, get acquainted with the major features of the CFS, see how it works, and look ahead to some of the expected changes for the 2.6.24 release.
=> Introducing the CFS for Linux