:New submission from Carlos Olmedo Escobar <carlos.olmedo.e@gmail.com>:
:
:I'm developing a library and I need to take the total/free swap space from a
:sysctl() call (i can use kvm but in this case my lib will need the suid bit).
:This kind of call already exists on FreeBSD (vm.swap_info plus struct xswdev).
:Also in Open/NetBSD.
We currently have (in HEAD):
vm.swap_anon_use # of pages of anonymous memory swapped out to swap.
vm.swap_cache_use # of pages of clean data swapped out by swapcache
(for people with SSDs).
There is no total swap sysctl but I will add one right now. I will
call it 'vm.swap_size'. You will then be able to calculate the
amount of free swap with (vm.swap_size - vm.anon_use - vm.cache_use).
Currently the list of individual swap devices is not exported.
-Matt
Matthew Dillon
<dillon@backplane.com>