Why CLOCK_MONOTONIC?

I seem to remember that some of these non-Intel SMP systems had problems with TSC synchronization and switching CPUs. Linux did patch it eventually. I think?

Anyway, if a program was using TSC, an AMD system might run TSC at different rates on different CPUs since TSC was actually pegged to the CPU's clock rate. Whereas on Intel TSC was a virtual clock. No matter the clock rate, TSC ran at the same speed.

I could only find this: https://github.com/Psychtoolbox-3/Psychtoolbox-3/wiki/FAQ...