Comment 36 for bug 513848

@tgabi:

This latest log confirms my theory. There are only two situations where the calc_load_tasks counter is incremented: once when each process updates the counter every 5 seconds, and when a processor switches from an uninterruptible task to the idle task. The first increment is always matched with a decrement in the log, while the second only sometimes matches with a decrement. When there isn't a matching decrement due to uninterruptible tasks is when we see the load avg calculated with a non-zero calc_load_tasks.

This may be seen in Karmic but not Jaunty due to this commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=dce48a84adf1806676319f6f480e30a6daa012f9. The commit reworks the load avg calculation code, and seems to introduce this regression.