Making a Linux home server sleep on idle and wake on demand

Re: Making a Linux home server sleep on idle and wake on demand – the simple way

#241

Post by [deleted] » Mon, Apr 24, 2023, 5:39 PM UTC

jeffbee wrote: post #149

aequitas wrote: post #59

Earlier quoted context omitted.

I agree, but you could argue that the Raspberry Pi is not performant enough during restores or browsing the backups. During the backup itself performance should not have to be that big of an issue as it's mostly a background operation you will not be waiting on. You could also use the RPi as a stepping stone which syncs it's files to the 'real' backup server which is on a daily/weekly timer instead of on-demand setup…

> power hungry server running 24/7 Nothing in this article supports this statement. It just says "high power consumption" without measuring, and declares victory without measuring the power saved. The fact is that power scaling has almost erased the difference between "suspended" and just "idle", to such an extent that there might not even be a meaningful difference, or any measurable difference. My NUC 12 Pro is dra…

[deleted]

Re: Making a Linux home server sleep on idle and wake on demand – the simple way

#242

Post by usr1106 » Mon, Apr 24, 2023, 8:26 PM UTC

tfvlrue wrote: post #234

usr1106 wrote: post #134

Earlier quoted context omitted.

That might possibly be close where you live, but not where I live. I need to heat my home at least 8 months a year and I heat using electricity (which isn't the smartest thing to do, but that's the way the house was built 30 years ago). It is too hot inside less than 4 weeks a year. So saving energy is done by trying to live in cooler rooms, but not by searching for small consumers.

I'm curious if you mean the 15 cents per kwh estimate is too high or too low? It's a conservative average for me in upstate NY over the past ~15 years. If you're using electric resistance heat, then I suppose a running computer is kind of like processing power plus "free" heat :)

Prices obviosly differ a whole lot depending on the country. My point was not absolute monetary savings, but energy saving.

My school physics tells me that nearly everything you do with electricity at home will heat your home. Doesn't matter whether it's the baking oven, the computer or the fridge. So if you heat using electricity and live in cold climate saving energy for computers or household appliances just moves the same consumption to heating.

The big exception is heating water. That energy is typically lost to the sewer.

As long as you pay the same electricity price for your computer as for your heating, it does not make a differencd whether that's 7 or 50 cent or the 15 you estimated.

Re: Making a Linux home server sleep on idle and wake on demand – the simple way

#243

Post by ttanev » Sun, Apr 30, 2023, 11:43 AM UTC

DCKing wrote: post #33

This looks like one of those home server infrastructure setup rabbit holes I would've bailed out of within the first 10 minutes of Googling to research the problem. I commend the author for their perseverance and the writeup - rabbit hole writeups are their own form of entertainment. That alone was worth it. I could never run anything that looks like such a conceptual pain the butt. A pain to maintain and troubleshoo…

My solution to the "10 years old PC used as a backup target" was to just donate/sell-off-as-parts the old PC, and replace with a 10 year old laptop, with an external USB enclosure. From 180-200 Watts down to 10-25, but it was not as much fun with two weeks of a rabbit whole digging :)

Re: Making a Linux home server sleep on idle and wake on demand – the simple way

#244

Post by ttanev » Sun, Apr 30, 2023, 11:48 AM UTC

colordrops wrote: post #119

netsharc wrote: post #110

Earlier quoted context omitted.

I've used Suspend-to-RAM for years on Windows, and it's always worked reliably, rarely needed fooling around with...

Try to control it remotely with SSH and wake-on-lan. Not so reliable.

It is not as hard, but requires a device in the middle to send the magic packets from time to time. Using my home desktop like this for years, 10 years ago it was a native feature of my tomato based router back then. Today it is with a small script that sshes into the openwrt router and sends the magic packet to the PC, but very similar in terms of UX.