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Making a Linux home server sleep on idle and wake on demand (2023)

(dgross.ca)
294 points AgaoAnar | 10 comments | 02 Sep 25 19:42 UTC | HN request time: 0.597s | source | bottom
1. antov825 ◴[02 Sep 25 19:49 UTC] No.45108140[source]▶
That's what I was thinking too. My home server consumes like 15 W and is silent. If you get a rack mounted server made for data centers and stick it in a closet so you can't hear it then yes, i guess this approach makes sense.
replies(2): >>45108854 #>>45112423 #
2. Spooky23 ◴[02 Sep 25 20:50 UTC] No.45108854[source]▶
I use a Mac Mini. When nothing it up, it draws like 7W!
replies(1): >>45110827 #
3. ryandrake ◴[03 Sep 25 00:20 UTC] No.45110827[source]▶
How do you accurately measure how much current a PC is drawing at any given time? Do you have some kind of measurement device inline with the power cord?
replies(4): >>45111009 #>>45111474 #>>45112298 #>>45112513 #
4. drnick1 ◴[03 Sep 25 00:45 UTC] No.45111009{3}[source]▶
You can use "smart" plug such as the Sonoff S31 (flash ESPHome to make it cloud-free).
replies(1): >>45111325 #
5. Arnavion ◴[03 Sep 25 01:35 UTC] No.45111325{4}[source]▶
And for one-off testing there's the standard P3 Kill-a-watt.
6. Spooky23 ◴[03 Sep 25 01:55 UTC] No.45111474{3}[source]▶
I have it plugged into a IKEA smart plug.
7. 01HNNWZ0MV43FF ◴[03 Sep 25 04:40 UTC] No.45112298{3}[source]▶
https://en.wikipedia.org/wiki/Kill_A_Watt

Works good IME, but you have to plug it into the wall first. Sometimes if you plug the appliance in, and then plug the KAW in, it will miscalibrate

8. marcosscriven ◴[03 Sep 25 05:11 UTC] No.45112423[source]▶
In the UK, every 10W of 24/7 load is ~£25/year (33 USD).

It’s very easy for even the small things to add up.

replies(1): >>45112921 #
9. PeterStuer ◴[03 Sep 25 05:33 UTC] No.45112513{3}[source]▶
Yes, I have one of those for my homelab. I draw about 200W on average, but it can spike to about 1000W.

https://www.brennenstuhl.co.uk/en-GB/products/travel-adapter...

10. kqr ◴[03 Sep 25 06:46 UTC] No.45112921[source]▶
In contrast to many common consumer subscriptions which start at double that it seems like decent value.