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On Mon, Apr 02, 2012 at 01:22:50AM -0400, Walter Dnes wrote: |
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> > > Hi, |
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> > > |
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> > > admin of a colo-center keeps complaining my server is going |
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> > > a little over power-limit (which they have set as ~120W per |
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> > > 24h/avg, while my server needs ~130-135W). So I need to find |
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> > > a way to save at least those 15W, or I will be moved to |
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> > > higher tarif (which means higher costs for server-housing). |
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> […] |
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> The following may seem obvious, but here goes... |
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> |
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> * remove unnecessary video cards, and drivers. Most colo machines |
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> should do OK with just a text console running on the onboard GPU. |
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> Dump all video driver stuff "/dev/agpgart (AGP Support)" and |
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> "Direct Rendering Manager". This assumes you're not running X on |
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> your colo machines. mc (Midnight Commander) is a great text-based |
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> tool, along the lines of ye olde Norton Commander. |
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> |
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> * disable sound cards/chips in BIOS and remove drivers and kernel |
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> support. |
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|
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As a follow-up question that’s been on my mind for a long time: can I always |
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assume that when there is no driver loaded, the device is really (physically) |
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off, so it doesn't use any power (at all)? Or are there exceptions to that |
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rule (like hardware known to be buggy)? My concern comes from having an |
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ageing laptop whose battery I want to preserve as well as I can. |
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In my case, that would be bluetooth, ethernet, possibly even the optical |
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drive, and even the touchpad. I can switch the latter off using Fn+F9, which |
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even works on the tty. But does that really switch it off, or does the kernel |
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merely ignore its input then? |
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In case it matters: it’s a Samsung P50 (professional line laptop from 2006). |
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-- |
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Gruß | Greetings | Qapla' |
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Please do not use my email addresses within any Facebook service. |
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Dyslexics of the world untie! |