[opensuse] 11.1 Battery life and something known as a "tickless" kernel
I've noticed that battery life on my brand new Dell XPS M1730 is not quite what I would expect (Less than an hour on a battery rated at 3 hours). I've heard of something called a "tickless" kernel from the land of the Debian and the Ubuntu. Now, I know that Linux is Linux basically, and that Debian and Ubuntu wrap thing is opaque "magic" layers. My question is, is there a way to extend my battery life and what is the tickless kernel? Can we get it in SUse land? -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
Am Dienstag, 25. August 2009 22:49:13 schrieb Bruce Ferrell:
Now, I know that Linux is Linux basically, and that Debian and Ubuntu wrap thing is opaque "magic" layers. My question is, is there a way to extend my battery life and what is the tickless kernel? Can we get it in SUse land?
It's a setting in the kernel, so yes of course you can have it in suseland too, however I think you'll need to compile your own kernel since it seems to be disabled on a default kernel. To quote from the kernel help: │ This option enables a tickless system: timer interrupts will │ │ only trigger on an as-needed basis both when the system is │ │ busy and when the system is idle. │ Symbol: NO_HZ [=n] │ Location: │ │ -> Processor type and features
Am Dienstag, 25. August 2009 schrieb Bruce Ferrell:
I've noticed that battery life on my brand new Dell XPS M1730 is not quite what I would expect (Less than an hour on a battery rated at 3 hours). [...]
Try the powertop utility.
I've heard of something called a "tickless" kernel from the land of the Debian and the Ubuntu. [...]
AFAIK the openSUSE kernel is tickless, too: karl:~ # zgrep NO_HZ /proc/config.gz CONFIG_NO_HZ=y Gruß Jan -- Never let the fear of striking out get in your way. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
participants (3)
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Bruce Ferrell -
Jan Ritzerfeld -
Michael Skiba