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Bernd Helmle
The OOM-Killer can cause nasty surprises on machines with a heavy memory load; processes are cancelled or terminated without warning. Fortunately, this behaviour can be adjusted with some clever kernel tweaks. Administrators of Linux machines with a very high RAM-Usage are sometimes faced with a...
Roland Wolters
This week, credativ launches its Open Source Support Card. With this card Open Source Support can be bought at a fixed price - without a binding contract. After a long preparation phase we are now offering our trusted services in a new, simple format; with the Open Source Support Card you get a...
Roland Wolters
Many digital cameras today do not just save an image, but also save various meta data in the Exif standard. This data includes information about the position of the camera when the image was taken (such as vertical or horizontal). However, some image programs use this data to rotate the image when...
Roland Wolters
The tool chain of a sys admin should always be comprised of effective tools. Today we are introducing the package sysstat. Sysstat is a collection of command line tools dedicated to providing the system administrator with a quick overview of the performance of the system. They work as front-ends to...
Roland Wolters
During the Games Developer Conference the Khronos Group released new versions of its widely used 2D and 3D graphics API, OpenGL. Besides the expected Version 3.3, they also released OpenGL 4.0. From 2004 - 2008 there was so little movement from OpenGL that it was practically announced dead, falling...
Roland Wolters
Phoronix has used its Test Suite to compare the memory and power consumption of different desktop environments. However, the results should be handled with care. The "Power & Memory Usage" test was done to evaluate whether XFCE and LXDE consume less power and memory compared with their "big"...
Roland Wolters
This week we moved our blog to a new blogging software: Movable Type. Besides the technical advantages it is now much easier for us to display the same article in different languages. credativ is a multinational corporation with employees of different nationalities. This became problematic when we...
Roland Wolters
The Red Hat Cluster Suite is a framework to bind two or more machines together to jointly handle one task. The following article gives an introduction to RHCS in terms of service failover. Linux is used daily in mission-critical environments all over the world. It follows that Linux can be required...
Roland Wolters
The administration of a large number of servers can be quite tiresome without a central configuration management. This article gives a first introduction into the configuration management tool, Puppet . Introduction In our daily work at the Open Source Support Center we maintain a large number of...
Roland Wolters
Currently I am testing the browser rekonq , a WebKit based KDE browser which is handled as the next KDE default browser by some. If that might happen or not is a question best left to the future, but the browser itself has some nice features in the current version 0.4 beta : kwallet integration,...