Gentoo Archives: gentoo-user

From: Volker Armin Hemmann <volkerarmin@××××××××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] What magic does portage use?
Date: Sun, 13 Dec 2009 12:36:23
Message-Id: 200912131335.34336.volkerarmin@googlemail.com
In Reply to: Re: [gentoo-user] What magic does portage use? by Alan McKinnon
1 On Sonntag 13 Dezember 2009, Alan McKinnon wrote:
2 > On Saturday 12 December 2009 21:42:13 Dale wrote:
3 > > And some would also argue that cycling power on and off is actually bad
4 > > for the rig as well. Keeping things at a constant temp is better than
5 > > fluctuating temps. The old expanding and contracting of material
6 > > argument. Sort of strange that computers that run a lot last a loooong
7 > > time.
8 >
9 > This is perfectly true and a well-proven fact. Thermal recycling is not
10 > good for electronics. It is good for your electricity bill though....
11
12 no, it is a myth.
13
14 Fanbearing are pretty sensitive.
15 Harddisk bearings are not made for 24/7 anymore.
16 Caps age under load. Even a small increase in heat halfs the expected
17 halftime.
18
19 Let your rig run all the time and you increase the risk of hardware failure a
20 lot.
21
22 >
23 > Tektronix did some proper lab tests many many years ago on their
24 > top-of-the- line oscilloscopes. They found that the calibration interval
25 > could be tripled if the rig was never switched off (just turn down the
26 > brightness overnight)
27 >
28
29 and how does sensitve measuring equipment compare to not-very-sensitive-but-
30 fast-aging-and-consisting-of-cheap-crap-computers?