Recently I helped configure a system for an application running under Tomcat on Linux with very large memory requirements: a minimum heap of 6GB with a maximum of 11GB. The JVM was initially configured to use the Parallel garbage collector. With this configuration garbage collection of the “Young Generation” was fine, but the “Old Generation” [...]

Today a friend of mine asked if I knew a way to avoid connection via his HSDPA/3G dongle when in roaming: he uses Italy’s Tre network, and sometimes the connection will fall back to TIM or Vodafone, which he wants to avoid because of increased costs. I’ve discovered that in GNOME’s Network Manager connection editor [...]