Ubuntu 14.04 Compiz taking lot of CPU resources
It is a official bug. Compiz CPU usage dramatically increased in Ubuntu 14.04 https://bugs.launchpad.net/compiz/+bug/1293384 Very high cpu usage for compiz in 14.04 (mesa incorrectly using llvmpipe) https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1268146