30 Apr
2025
30 Apr
'25
9:25 a.m.
On Wed, Apr 30, 2025 at 02:43:00PM +0530, K Prateek Nayak wrote:
(+ more scheduler folks)
tl;dr
JB has a workload that hates aggressive migration on the 2nd Generation EPYC platform that has a small LLC domain (4C/8T) and very noticeable C2C latency.
Seems like the kind of chip the cache aware scheduling crud should be good for. Of course, it's still early days on that, so it might not be in good enough shape to help yet.
But long term, that should definitely be the goal, rather than finding ways to make relax_domain hacks available again.