Re: Insomniacal Mac

On 2024-06-06 20:35, André G. Isaak wrote:

When I put my Mac to sleep for the night, all the external hard drives spin up for a few minutes around once an hour or so which is irritating me. The screen does not wake up. I was wondering if anyone had any suggestions for how to prevent this.
 I'm running a 2020 Retina 5K iMac under macOS 12.6.7. In my Energy Saver System Preferences, both 'enable power nap' and 'wake for network access' are UNchecked. 'put hard disks to sleep when possible' is checked.

I wrote a program to (amongst other things) keep my external spinning disks awake during the day and then late in the evening it stops that until morning.  Alas, something deep in the OS doesn't play fair.
The program should be (like the Mac) not logging anything through the night.
Recent log:
06-05::23:03:41 Stopped Keep Disk Awake Threads.
06-06::01:50  Cur Mem:   11264 Max Mem: 11264 1.000 MBi/hr
06-06::02:47  Cur Mem:   11264 Max Mem: 11264 0.000 MBi/hr
06-06::03:52  Cur Mem:   11264 Max Mem: 11264 0.000 MBi/hr
06-06::04:52  Cur Mem:   11264 Max Mem: 11264 0.000 MBi/hr
06-06::05:49  Cur Mem:   11264 Max Mem: 11264 0.000 MBi/hr
06-06::06:54  Cur Mem:   11264 Max Mem: 12288 0.000 MBi/hr
06-06::07:21  Cur Mem:   12288 Max Mem: 12288 1.000 MBi/hr
06-06::08:06:31 Started Keep Disk Awake Threads.
Sometimes it will go the whole night w/o waking more than once or twice.
(In the "daytime" that log hits 1/hour on the hour as designed).
--
British writing about the US can be condescending, but that there is value in an outsiders’ perspective because they can “see the alarming cracks in the wall the resident has stopped noticing… but also see the grandeur of a room where the resident can only see the cracks.”
Jesse Armstrong.