Hacker News Reader

Waiting is also a good strategy!

As of Linux 6.5, the scheduler understands that when one SMT "core" is busy, that means it might not be the best idea to schedule something on the the other "core", since it's really just a single core with a very low cost context switch. This makes certain very-parallel things noticeably snappier for me, and I can see it on the CPU usage graphs.

YMMV due to cache coherency and NUMA issues. :D

View on HN

simply disabling smt also gives the "snappier" effect for earlier kernels while thwarting some side-channel attacks and increasing power efficiency

I still,don't know why my file explorer syart faster on my 4 core n95 intel vs 5700u

Same goes for my dual core laptop vs quacore laptop, both same generation, but other one runs definitely hotter (4 core)

Reply on news.ycombinator.com