Re: hdparm spindown not working because app is constantly accessing?
- From: toby989@xxxxxxxxxx
- Date: Mon, 31 Dec 2007 05:59:45 -0800
Mark Hellman wrote:
toby989@xxxxxxxxxx escreveu:thanks, good suggestions. the other poster mentioned moving things to a ramdrive. you think the filesystem journalling can be moved to a ramdrive or to a flash card, too? powersaving is not the real issue. I want to have it spinned down irrespective, while I dont want to suspend to ram.
I cant get hdparm -S x to spindown my harddrive, since I guess there is an
application repeatedly, about every second acessing my hd. How can I
identify this application, and then get my hd to spin down after 30 min?
The filesystem journalling system leads to that periodic disk access.
When the "Powersave" scheme is active in KPowersave, the frequency of this
disk access is reduced. But it cannot be avoided.
But, if you are trying to spin down the disk to save power, let me tell you
that it is rather irrelevant. I have measured the power saving of spinning
down the hard drive and I saved just 1 Watt...
Much more relevant to power saving is the LCD brightness, the processor (use
the Powertop app to identify the performance hogs), you can also switch the
wireless off when it is not being used (most laptops have a hardware switch
for this), also remove Bluetooth dongles and other external USB devices
than are not being used.
Mark
.
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- From: toby989
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- From: Mark Hellman
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