Re: Tomas Vondra > It's probably more about the kernel version. What kernels are used by > these systems?
It's the very same kernel, just different docker containers on the same system. I did not investigate yet where the problem is coming from, different libnuma versions seemed like the best bet. Same (differing) results on both these systems: Linux turing 6.16.7+deb14-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.16.7-1 (2025-09-11) x86_64 GNU/Linux Linux jenkins 6.1.0-39-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.148-1 (2025-08-26) x86_64 GNU/Linux > Not sure how would that work. It seems this is some sort of permission > check in numa_move_pages, that's not what pg_numa_available does. Also, > it may depending on the page queried (e.g. whether it's exclusive or > shared by multiple processes). It's probably the lack of some process capability in that environment. Maybe there is a way to query that, but I don't know much about that yet. Christoph
