We have noticed significant desktop/UI lag on CentOS7 workstations using Mate when the CPU usage is high - i.e. the mouse pointer lags and moving windows (e.g. terminal windows) become jumpy (not smooth)
We didn't see (or notice) this issue with CentOS6/Gnome2
This can easily be shown by running something like 'cpuburn' (https://patrickmn.com/projects/cpuburn/) and moving a mate-terminal window around the screen
We can make things 'better' by running CPU intensive apps via 'nice' (without any noticeable performance hit to the CPU intensive app) - but this is a rather messy way of fixing the issue
We can also make things better by renice'ing X to a negative nice level
However, both these approaches seem wrong to me - as I'm probably missing something straightforward here
Does anyone know of any CentOS7/Mate settings that could be used to improve desktop/UI responsiveness with high CPU usage ?
Thanks
James Pearson