• Linux

    Enabling jumbo frames on your network

    Jumbo frames are Ethernet frames with up to 9000 bytes of payload, in contrast to normal frames which have up to 1500 bytes per payload. They are useful on fast (Gigabit Ethernet and faster) networks, because they reduce the overhead. Not only will it result in a higher throughput, it will also reduce CPU usage. To use jumbo frames, you whole network needs to support it. That means that your switch needs to support jumbo frames (it might need to be enabled by hand), and also all connected hosts need to support jumbo frames. Jumbo frames should also only be used on reliable networks, as the higher payload will make…

  • Linux,  Mandriva

    NetworkManager in Mandriva

    Already for some time, I experience some annoyances in Mandriva’s wifi configuration tools especially when moving my laptop from one to another location with a different wifi network where I connect to. The list of inaccessible wifi networks is not cleaned up in the network applet when moving the system, the network applet says it connected to network X, while in reality it connects to network Y and it only reconnects automatically to the last SSID you were connected to but not to a previously known SSID. Other distributions (Fedora, Debian/Ubuntu and also OpenSUSE if I am not mistaken) are using NetworkManager for some time. When working on these other…