just read about linux sched-ext (pluggable CPU schedulers in eBPF). cool as heck and something linux has been in dire need of for years. CFS was mediocre, ck is no longer hacking on MuQSS, and whatever Pop has on their 6.17 kernel (is it the EEVDF scheduler?) is incredibly bad under high load on my machine.
there's been so many alternative scheduler projects over the years that have come and gone, but now i can see the potential for workload-specific schedulers without having to run a patched kernel and praying the developers keep sync with upstream. one could even switch between schedulers without a reboot - do some work requiring heavy compiles, then take a break to play a game without having to switch kernels in between.