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
1 Hi,
2
3 maybe write your hw configuration first. Eg: CPUs, graphic cards, HDDs
4 (size, speed, type) and others.
5
6 Also provide lspci output and /proc/cpuinfo.
7
8 Then this is a server, maybe with more than one GB nic. If you dont use
9 spare nics disable them in bios. Do the same with other unneeded stuff.
10
11 If you can access your server and replace cards, remove everything you
12 dont need. Do not lower fans or dont play with cpu voltage. If you want
13 to run this server 24/7 it can cause serious problems. It will not save
14 you much power. Paradoxly this could lead to higher power usage in
15 some cases, because of hotter devices.
16
17 Remove spare memory cards, if you dont need much memory, etc.
18
19 Robert.
20
21 V Sun, 01 Apr 2012 17:04:58 +0200
22 Jarry <mr.jarry@×××××.com> napsáno:
23
24 > Hi,
25 >
26 > admin of a colo-center keeps complaining my server is going
27 > a little over power-limit (which they have set as ~120W per
28 > 24h/avg, while my server needs ~130-135W). So I need to find
29 > a way to save at least those 15W, or I will be moved to
30 > higher tarif (which means higher costs for server-housing).
31 >
32 > Before going hard(ware) way, I would like to try first
33 > all possible software solutions. What I tried up to now is
34 > cpufreqd, CONFIG_NO_HZ=y, and spindown. In addition to that
35 > I adjusted fan-speeds to a little lower values and turned
36 > off some unneeded peripherials (in bios).
37 >
38 > Is there anything else I could do? Any tips would be greatly
39 > welcomed...
40 >
41 > Jarry
42 >

Replies

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