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PathScale Open-Sources The EKOPath 4 Compiler Suite

Within the free software world, GCC has long been the dominant compiler with it being backed by the Free Software Foundation, it being the most well developed free compiler suite, and is a feature rich offering that is put out under the GNU GPLv3. As of late, LLVM has also been hitting the nail on the head. The Low-Level Virtual Machine with its C/C++ Clang compiler front-end offers great performance, is successful in building code-bases like the Linux kernel, its modular design allows the compiler infrastructure to be used in areas like graphics drivers, is under a BSD-style license, and carries numerous other advantages. Other open-source compilers have advanced too, including the release of PCC 1.0. Now there is a new and extremely interesting option to shake the open-source compiler world: PathScale is freely releasing the source to the EKOPath 4 Compiler Suite. EKOPath 4 is a high-performance compiler that up until now has been proprietary and costs nearly $2000 USD per license, but now it's open-source and can sharply outperform GCC in many computationally-intense workloads.
13 June 2011 - 234 Comments

Final Linux Benchmarks Of Project Dirndl

To much dismay, the major open-source announcement we have been waiting for, did not happen this week. Yes, this is the major open-source announcement that we have codenamed Dirndl. It is really that deserving of such a fitting codename. As our early tests have shown, it can dramatically speed-up the system's performance in computationally intensive workloads. No other open-source solution comes close in many of these tests, albeit there are some other proprietary brethren. In this article are some more details and performance results for what has been called "Dirndl" in technology terms.
11 June 2011 - 39 Comments

Linux Kernel Power Consumption Is Lowered, But Regressions Remain

As discovered by a Phoronix reader, there is a patch in the Linux 2.6.39.1 kernel that can partially improve the system's power performance. The patch by a Nokia engineer is entitled "cpuidle: menu: fixed wrapping timers at 4.294 seconds" and initial reports have said that it will lower the power consumption compared to the stock 2.6.39 kernel.
8 June 2011 - 20 Comments

Does SELinux Slow Down Fedora 15?

Earlier this week there were Fedora 15 vs. Ubuntu 11.04 benchmarks looking at the overall system performance as well as the power consumption. Both of these Linux distributions had performed close to one another, as is expected considering the similarities in their kernel and other packages, but there were some discrepancies in the disk tests. Speculations in the forums were that some of the performance differences might be attributed to SELinux, so here are some tests seeing the performance impact of SELinux on Fedora 15.
4 June 2011 - 10 Comments

Celebrating Seven Years Of Phoronix

On Sunday, the 5th of June, Phoronix.com will be turning seven years old. Here is to an early happy birthday for Phoronix, a look back, and what is coming up.
3 June 2011 - 14 Comments

How Unity, Compiz, GNOME Shell & KWin Affect Performance

Those that follow my Twitter feed know that over the weekend I began running some benchmarks of the various open-source and closed-source graphics drivers. But it was not like the usual Phoronix benchmarks simply comparing the driver performance. Instead it was to see how each driver performed under the various desktops / window managers now being used by modern Linux installations. In this article are the first results of this testing of Unity with Compiz, the classic GNOME desktop with Metacity, the classic GNOME desktop with Compiz, the GNOME Shell with Mutter, and the KDE desktop with KWin. These configurations were tested with both the open and closed-source NVIDIA and ATI/AMD Linux drivers.
30 May 2011 - 31 Comments

MeeGo Tablet UX 1.3 May Use Wayland This Year

Last weekend I mentioned that Wayland for MeeGo Tablet UX would be discussed and showed off at the 2011 MeeGo Conference that took place this week in San Francisco. Two sessions on the topic of Wayland took place, including one by Kristian Høgsberg, Wayland's creator. In this article are the slides that Kristian presented along with a few notes. This also shows off the plans to adopt Wayland in as soon as MeeGo 1.3, which will be released this October.
27 May 2011 - 9 Comments

Linux 2.6.39: XFS Speeds-Up, EXT4 & Btrfs Unchanged

While we have already delivered a number of benchmarks from the Linux 2.6.39 kernel, surprisingly we have not yet published any new file-system benchmarks from this latest stable Linux kernel release. Fortunately, that has changed today with a fresh round of Btrfs, EXT4, and XFS file-system benchmarks on the Linux 2.6.39 kernel and compared to the preceding 2.6.38 and 2.6.37 kernel releases.
26 May 2011 - 9 Comments

Will Wayland Become A New Desktop Standard?

As mentioned earlier on Phoronix, LinuxTag 2011 took place this past weekend in Berlin. One of the few talks I was able to make due to the Ubuntu Developer Summit in Budapest colliding with the event was the Wayland talk by SUSE's Egbert Eich. The focus of this talk was whether Wayland is on the way to becoming a new desktop standard.
17 May 2011 - 44 Comments

Linux Kernel Benchmarks Of 2.6.24 Through 2.6.39

With the recent look at the major Linux power regressions taking place within the Linux kernel, some initially wondered if the increase in power consumption was correlated to an increase in system performance. Unfortunately, it is clear now that is not the case. With that said though, here's some performance benchmarks of all major kernel releases going back to Linux 2.6.24 and ending with the Linux 2.6.39 kernel.
9 May 2011 - 11 Comments

458 software articles published on Phoronix.
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