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I vaguely remember Solaris had a way to prioritise focused X Window application (IA) while keeping it within time-sharing (TS) scheduling class. Kernel thread

by ivlad 4y ago

I vaguely remember Solaris had a way to prioritise focused X Window application (IA) while keeping it within time-sharing (TS) scheduling class. Kernel thread for interactive applications in focused window would then have higher priority than background applications improving responsiveness. I am not sure what manipulated the priority, but I assume Xsun (X Window server) did it.

worthless-trash 4y ago
I believe that this absolutely could be done with ebpf setting schedule priority. A small daemon looking at the front-running window and you're there. https://lwn.net/Articles/873244/ https://lwn.net/Articles/873244/