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Power efficiency (lemmy.zip)

submitted 3 months ago by jobbies@lemmy.zip to c/selfhosted@lemmy.world

47 comments fedilink hide all child comments

I'm wondering what folks do to optimise the power efficiency of their Linux servers. I've never really got to the bottom of what is the best way to do this and with the current energy crisis its a pertinent topic.

I'm talking about home servers, so the availability requirements are not the same as in a corporate environment. There might be vast chunks of time during the day or night when they sit idle, and home users are more tolerant of a lag when accessing resources if it means lower energy bills.

Specifically I've been thinking about:

allowing lower power states when idle
spinning-down hdd's when they're not in use
MAYBE letting machines sleep/hibernate
setting schedules of times where you know demand will be low/zero and efficiency can be managed aggressively
any other quick wins I've missed

It would be amazing if there was one tool or one guide that helps with all of that but thats never the case, is it 😅

Thoughts?

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[–] Cyber@feddit.uk 7 points 3 months ago

I split my loads (gigity) between the power hungry NAS and a passively cooled low power Proxmox host.

For me, most 24/7 activities are low CPU - like Home Assistant, so it needs to be there, but it doesn't need to do anything.

Other VMs are ansible, uptime kuma, smokeping, etc... the most they use is RAM

Then the (relatively) more power hungry NAS powers up 3 times a day to syncthing everything, maybe upload a backup, and if no-one's using Immich, etc. then it'll power back off again.

The only other thing I have yet to downsize is my pfSense box (still a low powered device, but has fans..) and a Raspberry Pi I use for my Zigbee network.