On Sun, 2023-10-01 at 04:31 -0400, gene heskett wrote: > On 9/30/23 23:22, hw wrote: > > On Sat, 2023-09-30 at 18:29 -0400, gene heskett wrote: > > > On 9/30/23 13:28, Matthias Böttcher wrote: > > > > sudo dphys-swapfile swapoff > > > > sudo systemctl stop dphys-swapfile.service > > > > sudo systemctl disable dphys-swapfile.service > > > > > > > > . > > > However that did give me a clue about getting rid of zram0, which has > > > been done now, thank you. Now I hope to uncomment the SSD line in fstab. > > > > Well, zram is the way to go; why would you still use swap partitions > > or swap files instead? Are you deliberately trying to wear out your > > SSDs or to slow down your computer? > > > zram is probably the way to go for board with lots of dram. Something > the pi's don't have.
You only need as much RAM as is sufficient for what you're doing. That's the way to go while having more RAM doesn't hurt much. Swapping to SSDs is slow. If it's faster than zram, something must be wrong. In an earlier message you're saying RAM isn't an issue. So why are you messing with it? 10GB swap on an SSD you're actually tring to use? Ugh ... It's maybe ok for preventing the system from going into some undefined and undesirable state from running out of memory for instances in which you're trying to figure out how much RAM you need. Once you figured it out, you add sufficent amounts of RAM and use zram. BTW, how do you prevent breaking the lathe when the pi or the software fails? There's things that can go wrong and lathes tend to be rather powerful tools. Do you have some device to detect failures and some kind of break that stops the lathe immediately when something goes wrong?
