On Mon, Jul 08, 2024 at 05:25:14PM -0700, Andrii Nakryiko wrote: > Ramping this up to 16 threads shows that mmap_rwsem is getting more > costly, up to 45% of CPU. SRCU is also growing a bit slower to 19% of > CPU. Is this expected? (I'm not familiar with the implementation > details) SRCU getting more expensive is a bit unexpected, it's just a per-cpu inc/dec and a full barrier. > P.S. Would you be able to rebase your patches on top of latest > probes/for-next, which include Jiri's sys_uretprobe changes. Right now > uretprobe benchmarks are quite unrepresentative because of that. What branch is that? kernel/events/ stuff usually goes through tip, no?
