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Performance Benchmarks

Here's a short list of some useful and interesting performance benchmarks used in Linux:

LTP
bonnie++
dbench
iozone
iperf
lmbench
netperf
tbench
Crackerjack
TTCP
httperf
Dhrystone

Playing ogg files through gstreamer

From my colleage Ned Miljevic:

Here is a Gstreamer pipeline to play your favorite ogg file on Beagle board using gstreamer and alsa.

$ gst-launch filesrc location="your_ogg_file_path" ! oggdemux ! vorbisdec ! audioconvert ! alsasink

maybe audioconvert not necesaary, didn't have time to find out :)

Way cool!

How to get rythmbox to play through Jack

Source: http://ubuntuforums.org/archive/index.php/t-554457.html

This is a lot easier than trying to get it to work through PulseAudio, as I did before, and works much more reliably. Gstreamer includes a jackaudiosink plugin in the gstreamer-plugins-bad package, though it won't show up in sound properties without a little hacking.

First you need some stuff. Before that disable 'esd software mixing' in the Sounds tab of gnome-sound-properties (system->preferences->sound). Get some ladspa plugins, jack-rack, jack.plumbing, the bad plugins, patchage to see that everything works, and of course jackd (make sure you have universe/multiverse enabled):

Dual Monitor Howto

http://gentoo-wiki.com/HOWTO_Dual_Monitors

Excellent DRAM Article by Ulrich Drepper

If you are a subscriber to Linux Weekly News lwn.net you will find a great series of articles covering the details of DRAM subsystems. The series of papers, titled "What every programmer should know about memory" starts out with Part I, with more to come.

Start with part one (LWN subscription required) here

* Part 1 (What every programmer should know about memory)
* Part 2 (CPU caches)

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