Grenola

[uggla]

Quote from http://grano.la/

Your computer has lots of power settings. To keep it running efficiently, you need to keep changing these settings based on what you are doing. Reducing your computers' energy waste the old fashioned way can be time consuming and tricky. Power management shouldn't have to be so painful.

 Installing Granola is simple and easy, and takes only seconds. Once it's installed, Granola operates autonomously, which means that you don't have to spend your time configuring it and reconfiguring it. Granola just works, doing what it is supposed to do - reducing your energy consumption - leaving you do what you're supposed to do.

[hiro]

I call bullshit.
If these people automatically made suspend 2 ram work I'd have bought it already.

My alternative:

Code: [Select]

echo 5 > /proc/sys/vm/laptop_mode
echo 1500 > /proc/sys/vm/dirty_writeback_centisecs

for host in `ls /sys/class/scsi_host/*/link_power_management_policy`
do
echo min_power > $host
done

for dev in `ls /sys/bus/usb/devices/*/power/level`
do
echo auto > $dev
done
for dev in `ls /sys/bus/usb/devices/*/power/autosuspend`
do
echo 2 > $dev
done

hdparm -C /dev/sda|grep standby || hdparm -S 5 /dev/sda


[bmarkus]

LINUX version is made of precompiled executables. No source availably strictly a propriatry solution. But free. You may try it, why not?

[hiro]

The only way to save more power on tc is to fix the linux kernel drivers.
How can these guys do it differently? Magic?

[bmarkus]

The only way to save more power on tc is to fix the linux kernel drivers.
How can these guys do it differently? Magic?

First you have to verify that it works and how much. If yes, you can start thinking.

[hiro]

No, if there aren't any CPU bogging applications in userspace the only way to save more power is by using properly configured kernel drivers.

[Juanito]

Using cpufreqd and laptop-mode-tools about doubles the battery life of my laptop

[bmarkus]

No, if there aren't any CPU bogging applications in userspace the only way to save more power is by using properly configured kernel drivers.

Give them a chance to prove before judging without any test or measurement

[hiro]

If they are clever they have rewritten and improved laptop-mode-tools, which is too buggy for me to use.
I do everything manually now. Simple sh scripts are the best.

[hiro]

Is cpufreqd still useful on modern processors?
I only used powertop and some web docs for all my tunings

[uggla]

I havn't actually tried Grenola myself but saw it mentioned in this recent OSnews article:
http://osnews.com/story/25017/How_to_Save_Energy_When_Using_Your_Computer

I like the idea but I'm not very happy with the fact it's closed source.