I can confirm that disabling "tickless system" in "Processor type and features" (CONFIG_NO_HZ is not set) solves the mistery load problem when recompiling the current Ubuntu kernel (3.2.0-24.38-generic). Thanks Jozef for pointing me this out, and it seems to keep a lot of people busy about this already for some time.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/995284 Title: High idle load on 64bit Ubuntu 12.04 with 3.2.0-24-generic kernel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/995284/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs