On Nov 27 17:10:11, mytraddr...@gmail.com wrote: > I am not intending to switch the machine.
Why? > 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. The CPU is not being "worn down" by running. As for rotating metal disks, they have a lifetime; that's why replacing them with SSD might be your best bet. But even regular disks are dirt cheap now. I don't believe this concern is even worth the time spent on this. > Yes, I do know in advance when the machine needs to run and when it can sleep. Then you can set a wakeup alarm in the BIOS (if it has one), and simply shutdown -p via cron, at the appropriate time. > "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. Wait, so you know in advance for how many _months_ the machine can sleep? > > > 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. > > > >
