freebsd-performance Digest, Vol 3, Issue 1

[Artem Tepponen]

> Too bad it's not supported, and too bad that, if it was, the
> overhead would be too high because there's not VOP to get the
> FS block offsets, so you would have to go trouh the FS code to
> swap, and it would be much, much slower.

Btw, do you have any fresh numbers on hand that can support this statement?
Naive approach whould be comparing CPU time taken and disk latencies
that differ by an order of magnitude and conclude that few microseconds
eaten by CPU would go unnoticed compared with milliseconds taken by disk.

Artem