Application optimization with compilers for Linux on POWER

Interested in tuning your C/C++ applications for Linux on POWER? This article compares the optimization options for both Linux on POWER C/C++ compilers: GCC and IBM XL C/C++. This paper also reviews tactics, such as Interprocedural Analysis, Profile Directed Feedback, and High Order Transformations, which are used by one or both of the compilers to extract higher performance from the Power architecture.

A new spin on a PalmOS palmtop (or inside it)

"To save power, the hard drive stops spinning between uses. That's fine. What's not so fine, however, is that it takes six seconds to spin up again and feed its data into the palmtop's memory so you can use it. As a result, your work is frequently interrupted by maddening, six-second visits to the dead zone. Everything is frozen on the screen, no button works and your workflow comes to a crashing halt." Read the full review of PalmOne's Lifedrive at News.com.

System 8 and Copland

Apple felt threatened by the pending release of Windows 95. It had preemptive multitasking, and was heralded by many magazines as "easy to use as Mac". Apple started he Copland project to respond. It was to have had live searches, full multitasking and all of Apple's next generation technologies. The project was canned in 1996 at the behest of Gil Amelio, though many of its technologies were eventually included in the OS. Read about it at MLAgazine.

Introducing Arch-OS

In the UK, Plymouth University's Portland Square building is the subject of an interactive experiment. Researchers have developed a software called Arch-OS which not only manages the buildings systems but also encourages those working inside to interact with their surroundings. Check the video too.

Partition Logic 0.55 Released

Partition Logic is a standalone graphical partitioning tool that boots from a single floppy disk or CD, intended to become a free-software alternative to certain well-known proprietary offerings. It's also an experiment in finding ways that a hobby OS (Visopsys) can be made useful/interesting to the sort of people who don't read OSNews. Release announcement here and download page here.

OpenBSD 3.7: The Wizard of OS

OpenBSD 3.7 is the first release to support newer wireless chipsets, especially for 802.11g, thanks to a big activism campaign lead by project leader Theo de Raadt. It's now possible to create a portable access point with a tiny PDA using the Zaurus port, too. As usual, there are a lot of other big and small changes, such as the import of Xorg, the jump towards gcc3, and a feature to update your installed packages automagically. Discover the details behind the scenes in this interview that Federico Biancuzzi had with several OpenBSD developers.

The Java Look-and-Feel Debate

Java Swing comes with "pluggable look-and-feel technology", which essentially boils down to the fact that interfaces can be "skinned" (although this is simplifying a tad) and is therefore, extremely flexible. By default, Java ships with a cross-platform look-and-feel (LAF), which means your apps can look consistent across all platforms, or LAFs that mimic the look of a specific platform, say Windows, for example. However, one of the chief complaints of Java desktop applications is its "look". It basically stems from two issues: