Possible Duplicate:
Laptop minimal power consumption tweaks
I often work from locations where I don't have a way to plug in my laptop and I need to get some single thing done. I'm looking for some good strategies that I could use to shut off all the processes I don't need (local Apache server, mysql and postgres) when I know I won't have a way to plug in for a while, but restore them when I do have power and would prefer to have my full development environment available.
How do other people manage this? Do background database servers use enough power for this to be worth doing?
I've got a Thinkpad x301, running 11.10. If that makes any difference.
Here's what powertop says is using power now:
The battery reports a discharge rate of 11.5 W
Summary: 1113.1 wakeups/second, 0.0 GPU ops/second and 0.0 VFS ops/sec
Usage Events/s Category Description
4988 rpm Device Laptop fan
50.9 ms/s 267.3 Process /usr/lib/firefox/firefox http://t.co/xxxx
3.6 ms/s 228.3 Timer hrtimer_wakeup
106.0 ms/s 87.8 Process /opt/TweetDeck/bin/TweetDeck
22.6 ms/s 110.2 Process /usr/bin/X :0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch -backgrou
7.8 ms/s 74.1 Process /usr/bin/gtk-gnash -u http://a.vimeocdn.com/p/flash/moogalover/1.1.19/moogalover.swf
7.6 ms/s 59.5 Process /usr/bin/gtk-gnash -u http://service.twistage.com/plugins/player.swf -U http://servi
0.9 ms/s 47.8 Interrupt PS/2 Touchpad / Keyboard / Mouse
3.3 ms/s 17.6 Process /usr/bin/python /usr/lib/desktopcouch/desktopcouch-service
7.2 ms/s 13.7 Process compiz
0.8 ms/s 14.6 Interrupt [6] tasklet(softirq)
1.0 ms/s 13.7 Interrupt [44] i915
431.9 µs/s 10.7 Process postgres: writer process
1.2 ms/s 9.8 Timer tick_sched_timer
670.7 µs/s 9.8 Process nautilus -n
182.9 µs/s 9.8 kWork ieee80211_iface_work
I can see a few things to kill (Tweetdeck and the firefox tabs with Flash in them), Desktopcouch, UbuntuOne, but those GTKGnash processes don't disappear when I stop Firefox.
