Thanks for your response. I am not intending to switch the machine. In terms of resources, I am mainly concerned about hard drives and cpu being worn down unnecessarily. I am not sure how much of a concern this should be though.
Yes, I do know in advance when the machine needs to run and when it can sleep. "Some machines have a wake option in their BIOS." -> thanks for the pointer, I will look into that. "How much electricity have you saved by that?" -> I don't know. The main concern is not using the hardware unnecessarily, to hopefully increase its lifetime. Though less electricity usage is a nice side bonus. "How much resources would that save?" -> My thoughts was that it would be better for hard drive longevity to have them spun down, rather than them being up for months without any access needed. I don't know in practice if that matters for life expectancy of the drive? > On 27 Nov 2022, at 15:50, Jan Stary <h...@stare.cz> wrote: > > On Nov 27 09:37:19, mytraddr...@gmail.com wrote: >> The main thing I am trying to do is to make it sleep >> every now and then to protect resources. > > How much eletricity does the machine eat? > (What other "resources" are you concerned about?) > >> 1) Make it sleep and wake up when woken up remotely >> I investigated Wake On Lan, which I enabled via ifconfig. However, this >> system is deployed remotely, and I have no access to other computers on the >> LAN, so I am unable to make this work. >> >> 2) Make it sleep for a few hours and then wake up > > Do you know in advance at what hours the machine > needs to run, and when it can sleep? > >> After 3hours+ of research in man pages and the internet, >> I have not seen any solution for that. > > Some machines have a wake option in their BIOS. > >> 3) hard drives Spin down, CPU lower freq >> I have been able to lower the CPU speed by running `apm -L`. > > How much electricity have you saved by that? > >> I haven't been able to spin down the hard drives. > > How much resources would that save? > > I you are concerned about resources, wouldn't you be better off > getting a low-power machine, with SSD disks? There are machines > out there that eat around 10W and get the job done (dependeing > on the job of course); and SSD doesn't need to spin down. > >> I cannot share the full dmesg for security reasons > > Bullshit. >
