Since a while I’ve been monitoring the power consumption of devices in my home using a power meter from BespaarBazaar.nl (advised by Remi). This power meter is a good one because it is very precise. It starts measuring at 0.2 Watt. I needed an Ethernet switch to connect my TV, NMT and PS3 to my home network. While searching for a proper switch, I came across DLinkGreen.com. It looked promising. The Green Calculator, a 8....

Bonnie++ is the perfect tool to benchmark disk I/O performance. When you want to run heavy disk I/O consuming applications on a server, you need to know what the disk I/O limits are to have an indication what you can run on it. Bonnie gives you information about read-, write-, rewrite Block I/O performance and the performance of file creation and deletion. Below is a sample piece of Bonnie++ output. It is hard to read, and when you’ve done a couple of runs on different hosts, it’s hard to compare these results....

I have used RT (Request Tracker) for quite a while. Starting with RT 2.0.15 + MySQL. Later upgraded that version manually (with a couple of nasty PHP scripts) to RT 3.6.x + PostgreSQL. It worked and stayed consistent. I’ve never been very happy about RT. It now contains about 80K tickets and it is slow. I have been reading a lot of forum/mailinglist threads about migrating from OTRS to RT and RT to OTRS because RT or OTRS should be faster....

It has been a while and many people were already using one of the development versions of CGP. Time to release a new version of CGP: v0.3. Special thanks for this version go to Manuel CISSÉ, Jakob Haufe, Edmondo Tommasina, Michael Stapelberg, Julien Rottenberg and Tom Gallacher for sending me patches to improve CGP. Also thanks to everyone that replied after the previous release. In this version there are a couple of minor improvements and some new settings to configure....

Version 0.2 of Collectd Graph Panel (CGP) has been released. This version has some interesting new features and changes since version 0.1. A new interface is introduced, based on Daniel Von Fange’s styling. A little bit of web 2.0 ajax is used to expand and collapse plugin information on the host page. The width and heigth of a graph is configurable, also the bigger detailed one. UnixSock flush support is added to be able to let collectd write cached data to the rrd file, before an up-to-date graph of the data is generated....

Just a couple of small changes to Stream Planner: add possibility to stop and delete a stream rewrite backend code to be more efficient fix test script to not use 100% cpu add notify script to send e-mailnotifications about starting streams Download: pommi.nethuis.nl/… Git: http://git.nethuis.nl/pub/stream-planner.git Demo: demo.nethuis.nl/stream-planner

Collectd Graph Panel (CGP) is a graphical web front-end for Collectd written in php. I’ve developed CGP because I wasn’t realy happy with the existing web front-ends. What I like to see in a front-end for Collectd is clear overview of all the hosts you are managing and an easy way to get detailed information about a plugin. This first release is a very basic version of what I have in mind....

Postgrey is a Postfix policy server implementing greylisting. This patch adds p0f support to Postgrey based on p0fq.pl from p0f, like the patch by Fedux. P0f is a fingerprint tool, to identify operating systems. The difference between Fedux’s patch and mine is that his patch requires p0f-analyzer. See the image below. My patch uses p0f’s socket created with the ‘-Q’ option. Because Postgrey doesn’t know what the source port is of the sender, p0f must also be configured with the ‘-0’ option....

Recently I bought a portable harddrive from Western Digital. The Western Digital Elements (WDE1U10000E) carries 1 Terabyte of space and can be connected via USB 2.0. 1TB, for just 99,00 Euro (2008-12-27). According to Wikipedia and the SI standard the drive must contain 1,000,000,000,000 bytes (1TB). fdisk shows us: Disk /dev/sda: 1000.2 GB, 1000204886016 bytes So that is correct. The disk is preformatted FAT32. After mounting the disk, df shows me there is actually 976283280 KiB (932GiB) available....

For downloading torrents I use TorrentFlux on a Debian Linux machine. All users on this system have a quota, so they don’t mess things up. TorrentFlux shows a storage bar on the main page with information about how much space is left on the device. Unfortunately it shows information about the complete partition, not about how much of your quota is left. This patch adds quota support and is backwards compatible....