Good article on Swap here:
https://help.ubuntu.com/community/SwapFaq - and if what you say is correct, why do all Ubuntu derivatives, including Zorin, put swap at the end then? (if you allow it to do its own thing)
Just found this:
"
4.4.3. Where should I put my swap space?The short answer is anywhere is fine. However, if you are interested in extracting as much speed as possible, there are two basic strategies (other than buying more RAM).
Split the swap space across multiple drives, or at least on the drive you write to least.
Put each swap partition on the outer tracks.
Here are the considerations:
If you have a disk with many heads and one with less heads and both are identical in other parameters, the disk with many heads will be faster. Reading data from different heads is fast, since it is purely electronic. Reading data from different tracks is slow, since it involves physically moving the head.
It follows then that writing swap on a separate drive will be faster than moving the head back and forth on a single drive.
Placement: Older disks have the same number of sectors on all tracks. With these disks it will be fastest to put your swap in the middle of the disks, assuming that your disk head will move from a random track towards the swap area.
Newer disks use ZBR (zone bit recording). They have more sectors on the outer tracks. With a constant number of rpms, this yields a far greater performance on the outer tracks than on the inner ones. Put your swap on the fast tracks. (In general, low-numbered cylinders are associated low partition numbers. However, see Kristian's more recent comments on this issue. -Tony)
Usage: Of course your disk head will not move randomly. If you have swap space in the middle of a disk between a constantly busy home partition and an almost unused archive partition, you would be better of if your swap were near the home partition for even shorter head movements. You would be even better off, if you had your swap on another otherwise unused disk, though.
Striping: Speed can be increased by writing to multiple swap areas simultaneously. Swap spaces with the same priority will be written to like a RAID. See Section 9.3.
Summary: Put your swap on a fast disk with many heads that is not busy doing other things. If you have multiple disks: Split swap and scatter it over all your disks or even different controllers."
From:
http://www.tldp.org/HOWTO/Partition/req ... pPlacement