2017-02-06
Squeezing a bit more powersaving from Linux
The c't magazine this month had a few tips on linux powersaving. I tried them on the homeserver and saw indeed a very slight reduction in power use as logged by the UPS. For powersaving in sound card(s):# echo 1 > /sys/module/snd_hda_intel/parameters/power_saveThis can cause plopping sounds on some sound cards. For powersaving in disk communication:# cd /sys/class/scsi_host/ # for i in host*/link_power_management_policy; do echo min_power > "$i"; done