Multimedia Support in the Linux Kernel
Significant Non-Kernel Factors
When considering your hardware, you should exercise wisdom. Bigger and faster are the watchwords for a powerful multimedia system, but some caveats remain. Video is an especially tricky factor. If, like myself, you need to use nVidia's closed source drivers, you must resign yourself to the possibility of inexplicable problems when running a real-time kernel. Because of its closed source nature, you can't know how the video driver interacts with the kernel at levels that affect latency and real-time response. To nVidia's credit, they do try to keep up with Linux kernel development, but the real-time patches are not official patches, and until nVidia opens their source code, kernel developers are unable to help users who experience performance problems on real-time and low-latency systems.
Also, you should keep your X windowing system current. X works closely with the kernel video drivers, so to ensure maximum performance, make sure that X is up to date.
This topic goes much deeper than I've been able to discuss here, but the web is rich in relevant resources. For example, you should have no trouble finding out more about kernel configuration , low latency , and real-time optimizations , and I hope that some of you will take the next steps toward compiling your own kernel. Rolling your own is a time-honored Linux tradition, and you don't need an engineering degree to do it. Just be sure to keep your old kernel around for booting into in case things go wrong, breathe slowly and deeply, be patient and brave, ask questions, and, above all, have fun.
- OSS/Free: http://www.4front-tech.com/usslite/
- Ingo Molnar's real-time kernel patches: http://www.kernel.org/pub/linux/kernel/projects/rt/
- Planet CCRMA: http://www-ccrma.stanford.edu/planetccrma/software/
- Musix: http://www.musix.org.ar/en/index.html
- Bardix: http://www.linuxmusicians.com/viewtopic.php?f=4&t=696??
- LinuxForums' guide to compiling the Linux kernel: http://www.linuxforums.org/forum/linux-kernel/55612-mini-howto-compile-linux-kernel-2-6-a.html
- The low-latency HOWTO: http://lowlatency.linuxaudio.org/
- The Real-Time Linux wiki: http://rt.wiki.kernel.org/index.php/Main_Page
Buy this article as PDF
HP's annual Cyber Risk report offers a bleak look at the state of IT.
But what do the big numbers really mean?
.NET Core execution engine is the basis for cross-platform .NET implementations.
The Xnote trojan hides itself on the target system and will launch a variety of attacks on command.
Spammers go low-volume, and 90% of IE browsers are unpatched.
Adobe scrambles to release patches for vulnerable Flash Player.
Four-inch-long computer on a stick lets you boot a full Linux system from any HDMI display device.
New statute would require companies to report break-ins to consumers.
Weird data transfer technique avoids all standard security measures.
FIDO alliance declares the beginning of the end for old-style login authentication.