This is on the nvidia blob (260.29 or something like that). I san compiz --replace and performance jumped back up to where it should be. Now, I'm trying to find a way to keep window decorations with Compiz on KDE - holy convoluted configuration batman.
I'd still prefer to a fixed KWin, though.
Uhm, not so sure about it. You may remember that big bug/request about fake transparency (not a KWin example, I guess). The problem was that the only way to get that kind of eye candy is through compositing. The answer from KDE people was around the lines of "abandon your ancient hardware and buy a new graphics card". They only had to add: "and develop the drivers". They even got a patch to add this feature--which I happened to like and use in KDE 3.5 times--but they didn't accept it. It has to be said that KDE4 has some nice effects here and there that don't require compositing, though.
Similar story with KWin's compositing effects. They are slow and some of them need I don't know what super-advanced features. Compiz people somehow got it right. I understand that the developer of KWin is a volunteer, and unfortunately he doesn't know how to implement those features in such a way that most people would enjoy an optimal desktop experience. But at least let's get the record straight.
Do you have 4GB of RAM or more without MTRR cleanup enabled in the kernel? The issue is that the MTRR registers are not being properly configured by the BIOS, such that MTRR cleanup needs to be done by the kernel to fix them:
https://bugs.launchpad.net/linux/+bug/210780
By the way, if you are one of those people, try booting with "enable_mtrr_cleanup mtrr_spare_reg_nr=1" added to your kernel commandline parameters.
Hey genius, this thread is about SC 4.6. No one cares about your outdated software lineup.
WTF are you talking about? SC 4.6 kicked HAL!! And the semantic features are optional since day 1!!!
Yeah, that's evident throughout your whole post.