Ubuntu 10.10 64 Bit on an HP ProBook 4720s

Update: Ubuntu 11.04 seems a good improvement over the previous one. Read my adventures here installing it on the same laptop. The HP ProBook 4720s is what you'd call a business workhorse: metal casing, fast WLAN, 6 hours+ battery duration, a Core 3 and a matte (anti glare) 1600x900 LCD screen for a fair price … Continue reading Ubuntu 10.10 64 Bit on an HP ProBook 4720s

Enabling the powerbutton in Ubuntu Server 10.04 on an AMD box

While shutdown –h does the trick of shutting down a server just fine, occasionally I’d prefer the haptic version. While I’ve never had problems getting the powerbutton to work with Ubuntu desktop versions, it didn’t work out of the box on my AMD Athlon XP. Fortunately the solution seems to be quite simple: sudo apt-get … Continue reading Enabling the powerbutton in Ubuntu Server 10.04 on an AMD box

Varnish, session_linger and dropped connections

Recently I conducted a load test on my beloved low end Ubuntu 8.04 VPS. The setup consists of a mysql 5.1 DB, a Tomcat 6 webapp, openjdk 6 and Varnish 2.1.2. The load generator was issuing HTTP GET requests through a DSL connection which were supposed to create a decent load on Tomcat. To my … Continue reading Varnish, session_linger and dropped connections