Gentoo Archives: gentoo-user

From: Robert David <robert.david.public@×××××.com>
To: gentoo-user@l.g.o
Cc: mr.jarry@×××××.com
Subject: Re: [gentoo-user] Tips for saving power needed...
Date: Mon, 02 Apr 2012 09:57:56
Message-Id: 20120402115559.2b723512@gmail.com
In Reply to: [gentoo-user] Tips for saving power needed... by Jarry
Hi,

maybe write your hw configuration first. Eg: CPUs, graphic cards, HDDs
(size, speed, type) and others. 

Also provide lspci output and /proc/cpuinfo.

Then this is a server, maybe with more than one GB nic. If you dont use
spare nics disable them in bios. Do the same with other unneeded stuff.

If you can access your server and replace cards, remove everything you
dont need. Do not lower fans or dont play with cpu voltage. If you want
to run this server 24/7 it can cause serious problems. It will not save
you much power. Paradoxly this could lead to higher power usage in
some cases, because of hotter devices.

Remove spare memory cards, if you dont need much memory, etc.

Robert.

V Sun, 01 Apr 2012 17:04:58 +0200
Jarry <mr.jarry@×××××.com> napsáno:

> Hi, > > admin of a colo-center keeps complaining my server is going > a little over power-limit (which they have set as ~120W per > 24h/avg, while my server needs ~130-135W). So I need to find > a way to save at least those 15W, or I will be moved to > higher tarif (which means higher costs for server-housing). > > Before going hard(ware) way, I would like to try first > all possible software solutions. What I tried up to now is > cpufreqd, CONFIG_NO_HZ=y, and spindown. In addition to that > I adjusted fan-speeds to a little lower values and turned > off some unneeded peripherials (in bios). > > Is there anything else I could do? Any tips would be greatly > welcomed... > > Jarry >

Replies

Subject Author
Re: [gentoo-user] Tips for saving power needed... Pandu Poluan <pandu@××××××.info>