Am Sonntag 03 Juni 2007 19:06 schrieb Ryan Sims: > On 6/3/07, Florian Philipp <[EMAIL PROTECTED]> wrote: > > Am Sonntag 03 Juni 2007 18:03 schrieb Dan Farrell: > > > On Sun, 3 Jun 2007 13:16:33 +0200 > > > > > > Florian Philipp <[EMAIL PROTECTED]> wrote: > > > > Am Samstag 02 Juni 2007 20:03 schrieb Jeff Horelick: > > > > > Florian, > > > > > > > > > > That's not that big of a difference...Also, Gentoo/Linux does not > > > > > have powersaving for every device like Windows XP...it's writing to > > > > > the hard drive more often and it doesn't spin as much down when > > > > > it's not in use to help performance. Also, if i was you, i'd be > > > > > worried about your system using that LITTLE energy especially since > > > > > you have a pretty hefty CPU, video card, motherboard, 2 hardrives > > > > > and al the rest of your components. > > > > > > > > > > On 6/2/07, Florian Philipp <[EMAIL PROTECTED]> wrote: > > > > > > Hi guys! > > > > > > > > > > > > I've just tested the energy consumption of my PC. Aparently > > > > > > Gentoo consumes a > > > > > > quiet a bit more than Windows XP: 213 W compared to 188 W > > > > > > > > > > > > PowerNow is activated and works on both cores (tested). The same > > > > > > hardware is > > > > > > plugged in and works. I'll attach the output of lspci, lsmod and > > > > > > cpuinfo as > > > > > > well as my world-file just in case it's related to some software. > > > > > > > > > > > > Is there anything I've forgotten? Where does my energy go? > > > > > > > > > > > > A short overview of my hardware: > > > > > > > > > > > > AMD Athlon64 X2 4200+ EE > > > > > > Asus M2N32-SLI Deluxe (WLAN should be deactivated) > > > > > > 2048 MB DDR2 Corsair > > > > > > SoundBlaster Audigy 2 ZS > > > > > > ATI Radeon 1950 Pro (fglrx) > > > > > > 2 SATA2 HDDs > > > > > > 1 SATA1 DVD-RAM > > > > > > Floppy > > > > > > USB mouse, keyboard and printer > > > > > > TFT screen (connected via DVI) > > > > > > > > Well, I've forgotten to mention that I didn't substract all > > > > peripheral devices. My new calculations (idle, nothing but the big > > > > black box under my desk): Linux 137W, Win 114W (20% or 18EUR / 20$ > > > > p.a.). > > > > > > > > It seems I can't disable my onboard WLAN completely and while Win > > > > deactivates it because I don't provide drivers, Linux gives it some > > > > power although no software is accessing it. > > > > > > > > By the way: Maximum output while testing with 3DMark 2006: 219W. I > > > > wonder why I had to buy a 400W power supply... > > > > > > Maybe you can power off the wlan with a wireless-utils program, or > > > maybe by unloading the kernel module? > > > > > > Have you set up power management, powersave frequency governors? Have > > > you set up your disk(s) to idle quickly? > > > > There is no kernel module. I'll play around with modules, configs and > > tools later. It's not urgent, it was more like a mystery that I wanted to > > solve. > > > > Yes, powermanagement (aka "PowerNow!") is activated. No, my disks do not > > spin down and should not because of the attrition (I hope that's the > > right word) that comes with spinning up. > > [somewhat OT]: > Please read this: http://labs.google.com/papers/disk_failures.pdf > The damage done to hard drives in spinup/spindown is in the same > category of juju as ricer cflags and cloud seeding. Drive activity > and such is *not* an indicator of failure, while there may be some > mechanical stress on the disk, but it's not going to cause your drive > to fail noticeably earlier. Spin them down, save the power, and don't > listen to fearmongers.[/OT] > > -- > Ryan W Sims
Thanks! I've known that this report exists but have newer actually seen it myself. I'm still a bit reluctant because I don't suspect that HDDs in Google's server farm spind down as often as mine would. Well, I'll just close my eyes and hope for the best when I hear my darlings shutting down. ;)
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