Ubuntu/Xubuntu/Kubuntu/Lubuntu Power Tests
Phoronix: Ubuntu/Xubuntu/Kubuntu/Lubuntu Power Tests
With the extensive Linux power consumption tests that I've been carrying out to solve some nasty Linux kernel power regressions and find other areas for optimization, one of the requests that has come in frequently is to compare the power consumption of the KDE, GNOME, Unity, Xfce, and LXDE desktops. After the article earlier this week to look at how the desktop environments / compositing window managers affect OpenGL performance, I carried out a quick desktop power test. In this article are battery power consumption results for Ubuntu, Kubuntu, Xubuntu, and Lubuntu.
Why is the wattage so high?
Having an unoptimized OS running idle sucking battery really bothers me, my laptop idles at ~7.2Watt with screen and wifi ON and it's not even a new model (only Core 2 Duo) :eek: So a normal 6 cell 4800mAh battery = 6 hours idle, 5 hours web for me.
different compositing modes in kwin
I'd like to see a comparison of the different compositing modes in kwin (XRender vs. OpenGL and the different scale methods). Imho, kwin is currently the best window manager feature-wise and I think it would be very interesting to see, how the different options affect performance and power consumption. Especially the blur feature seems to consume a lot of battery.