With more and more of one's personal and professional lives being on the computer, encrypting and properly securing those computers -- particularly mobile devices -- is incredibly important. Sadly, it's not often thought about until it's too late. It has become relatively easy to protect your personal data on Ubuntu Linux with home directory encryption support being just a checkbox-away within the installer or even full-disk LVM encryption when using Ubuntu's alternate installer. Previous tests of Ubuntu disk encryption performance have shown there is some penalty in disk-centric workloads, but the benefits are certainly worth it. In this article is a look at the Ubuntu home encryption performance under Ubuntu 11.10 with both old and new laptops.
14 September 2011 - 14 Comments
Next Tuesday at XDC2011 Chicago I am hosting a Q&A panel about contributing to X.Org and open-source projects, where the panel participants are largely comprised of well known X.Org and Mesa developers that began contributing while at university. In hopes of sparking new contributors to these key open-source projects, computer science students from the major Chicago universities have been invited to attend this panel discussion and anyone else wishing to learn more about open-source development. In preparation for this panel, I have been collecting some new development statistics on Mesa and X.Org.
10 September 2011 - 6 Comments
It's approaching the one-year anniversary of when Mark Shuttleworth announced Ubuntu is going to deploy Wayland with Unity, eventually. As those know that pay attention to the continual flow of information from Phoronix regarding the next-generation Wayland Display Server and Linux graphics drivers in general, it's being developed at a brisk pace and with several key open-source projects now betting big on its adoption, but how's it playing in the soon-to-be-released Ubuntu 11.10?
25 August 2011 - 6 Comments
If you were hoping that the Linux 3.1 kernel would fix the big power regression problem that's caused by PCI Express Active State Power Management (ASPM) being disabled on more systems since the release of the Linux 2.6.38 kernel, you're not in luck. There has not been any active work in this area. Making things worse though for mobile Linux users interested in a long lasting battery is another new regression in the Linux 3.1 kernel. Affected systems can easily see a 30% increase in power consumption simply when comparing the Linux 3.0 kernel to the current code being assembled for Linux 3.1. For an Intel Sandy Bridge notebook, the power consumption is up by 76% just over the course of this year from Linux kernel regressions.
22 August 2011 - 54 Comments
This month marks the two-year anniversary of the release of BFS, the Brain Fuck Scheduler, for the Linux kernel. While BFS has not been merged into the mainline Linux kernel, the scheduler is still actively maintained by Con Kolivas and patches are updated for new kernel releases. The BFS scheduler has also reached mild success and adoption over the past two years. In this article is a fresh look at the Brain Fuck Scheduler along with a fresh round of benchmarks from the Linux 3.0 kernel.
16 August 2011 - 72 Comments
With my recent work in tracking down Linux power regressions and looking at other areas of Linux power consumption, there's been a number of emails sent in by Phoronix readers concerning the power consumption of web-browsers. In particular, some users seem to think that Google's Chrome/Chromium web-browser causes the system to go through noticeably more power than Mozilla Firefox and other web-browsers. But how much is this really the case? Here's some benchmarks.
15 August 2011 - 19 Comments
In the middle of July, Adobe released the first Flash Player 11 beta, which had updated the Linux version too. The Flash Player 11 release notably incorporated native 64-bit support, once again, after the earlier "Square" 64-bit beta had lagged behind in terms of updates. Shortly following the Flash Player 11 Beta 1 release I had carried out some Linux benchmarks, but those results never seemed to make it out the door. Here are those results for anyone interested in seeing how the CPU usage and system power consumption differ between Flash 11 with and without VDPAU rendering and then against the open-source Gnash Flash Player.
9 August 2011 - 9 Comments
This weekend at the Desktop Summit in Berlin, plans were presented by Martin Gräßlin, the maintainer of the KWin compositing window manager, for supporting the Wayland Display Server as an alternative to KDE being limited to X11. For early adopters and those using Plasma Active, KDE on Wayland should become a reality in the 2012 calendar year.
7 August 2011 - 7 Comments
With Phoronix Test Suite 3.4-Lillesand and the new MATISK support, over one thousand revisions of the Mesa graphics library were benchmarked. Two small performance optimizations were also noted.
1 August 2011 - 11 Comments
While S3 Texture Compression (S3TC) is widely used by many games and applications since its inclusion into OpenGL 1.3 and Microsoft DirectX 6.0, these lossy texture compression algorithms have not been implemented in the open-source Linux graphics drivers. This lack of open-source support is due to S3 Graphics holding the patent rights to this technology that they actively license to major hardware vendors. There long has been an external library that can be loaded and will work with most Mesa / Gallium3D drivers for advertising S3TC support, but it's not found by default and it's not included in leading Linux distributions due to these legal fears. There may now be a new solution for the S3TC Linux problem thanks to the advent of a new (and simpler) texture compression algorithm that can serve as a drop-in replacement.
19 July 2011 - 109 Comments
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