The logger meets linux-kernel

if something is 100x more expensive to run, but still only averages one cpu second per hour, it really doesn't matter.

device wakeups are similar, if you have hundreds per second it's a major problem, but once you get to around one per second the benefits of extending the sleep time further is of much less value (the average amount of time/power spent awake starts to become a fraction of the power spent 'asleep but able to wake up' and as a result, further reducing that fraction makes little practical difference.