Description of problem: prelink is quite hard disk and CPU insensitive -- as updating the cache regularly is a nice to have, but not crucial task (at least afaik) I'd say the cron job should only run if the system is running on AC power. Thus I think a simple check for existence of /usr/bin/on_ac_power, running it, checking its return code and aborting if running on battery would be a nice addition to the cron script. I'm willing to write something up and testing it in case you indicate to agree with the idea and such a patch in general.
That's business of anacron/crond, there are many other cron jobs that shouldn't be running when on batteries and requiring each to do it on its own is a bad idea.
(In reply to comment #1) > That's business of anacron/crond, there are many other cron jobs that shouldn't > be running when on batteries and requiring each to do it on its own is a bad > idea. I see the point -- but for some other cron jobs it might be important to run even when on battery.
*** This bug has been marked as a duplicate of 190268 ***