A better title: a pathological test program meant for Linux does not trigger pathological behavior on OpenBSD
> ... in the comments everyone ignores the content and argues about the headline.
Surely you must be new to Hacker News…
We do hear that some kernel system calls have moved out from behind the lock over time, but anything requiring core kernel functionality must wait until the kernel is released from all other CPUs.
The kernel may be faster in this exercise, but is potentially a constrained resource on a highly loaded system.
This approach is more secure, however.