> on a side note I've found i have to disable cpu frequency scaling first to > get a proper > sampling of my clock skew > without that what it gets can vary alot on each run
hm.. that cpu frequency comment makes me wonder, because I think I have spread spectrum enabled, and probably that is what causes my clock to shift so much: http://lkml.indiana.edu/hypermail/linux/kernel/0410.1/1505.html http://ubuntuforums.org/showthread.php?t=956263 "Otherwise, reboot your system and enter BIOS SETUP. Check if your BIOS has a Front Side Bus (FSB) Spread Spectrum (SS) clocking option. On many systems, this option is located in the "Advanced Chipset Features" menu. If the option is present and enabled, disable it. Boot Linux and observe the system clock over several hours to verify if this has improved its accuracy." I will disable: - Spread spectrum - D.O.T. (Dynamic Overclocking Technology) I will purge: - ntp - adjtimex I will leave the pc running for a while and let you know of my results. Thanks for this lovely side note! :) -- awk errors and invalid /etc/default/adjtimex https://bugs.launchpad.net/bugs/553237 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
