On this page:
in the NetBSD/OpenBSD section towards the middle of the page is this paragraph:
"You might also want to configure your kernel to lock shared memory into RAM
and prevent it from being paged out to swap. This can be accomplished using
the sysctl setting kern.ipc.shm_use_phys."
I don't see that setting available in sysctl nor do I find it grepping /usr/src.
Before I send in a correction to the postgresql folks, can can someone confirm
whether or not this is statement is true for OpenBSD?