On my machine, Compiz uses ~25% of all 8 cores when I use the computer.
When I don't use it (so it's idle), Compiz uses around 50%.
How do I make compiz not use so much CPU?
I've struggled with this problem for years and it's annoying. My computer is a monster, but
compiz is crippling it, and it's loudest and hottest when it's idle. I can't believe there is anything in Ubuntu that requires that much work all the time and especially not during idle.
- OS = Ubuntu 15.04 (wondering whether upgrading to 15.10 would help, but probably not?)
- DE = I use and like Unity (please don't suggest alternatives)
- CPU = Intel i7, 16GB RAM
lspci | grep VGA= AMD Radeon 5450 (source)
/usr/lib/nux/unity_support_test -p= Not software rendered: no (source)
About this computer= Gallium 0.4 on llvmpipe (LLVM 3.6, 128 bits)
- I don't currently have AMD drivers installed; last time I battled the compiz monster, I had big trouble even getting an image on the monitor. I'll take this challenge again if I have to, to make this compiz problem go away. OTOH downloading AMD drivers and using Catalyst seems to be not recommended (example source).
ccsm= Sync to VBlank is not ticked, and Texture Filter is "Fast". (source)
ccsm= As an experiment, I've now enabled "Force full screen redraw (buffer swap) on repaint". (source)