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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,...
Roland Wolters
credativ employee, Alexander Wirt, is due to give a presentation at the German Chemnitz Linux Days about Single Sign On with Kerberos. Besides an introduction into configuration of Kerberos, the talk will also focus on the configuration of its various services. Kerberos is an authentication...
Bernd Helmle
The PostgreSQL project just released the Alpha 4 of its upcoming PostgreSQL 9.0. The Alpha4 version of the upcoming PostgreSQL 9.0 release is ready for download . It is planned that Alpha4 will be the last Alpha version before the Beta release cycle for PostgreSQL 9.0. Some highlights of this...
Bernd Helmle
The series "PostgreSQL Optimiser Bits" will introduce the strategies and highlights of the PostgreSQL optimiser. We start today with a new feature of PostgreSQL 8.4: Semi and Anti Joins. Since version 8.4, PostgreSQL has been offering a new optimisation strategy for the optimisation of certain...