Under Linux, multiple swap partitions are automagically striped, so
the ideal scenario is in fact to spread your swap partitions over many
channels and many spindles (disks) for maximal I/O performance. In
most desktop Linux boxen, swap I/O eclipses all other disk activity.
How much swap you need is dependent on the use of the machine. Most
Linux jockeys agree that systems with less than ~128meg (I think the
emperical evidence pointed to 124meg ;-) suffer a minor speed penalty.
I'm still waiting for a solid implementation of Solaris' tmpfs. :-/
#if Kelly Lynn Martin /* Apr 17, 15:22 */
> Ideally, you'd have your swap partition on a drive all by itself
> (which is impractical because nobody needs that much swap) or on a
> drive with infrequently accessed data; then the head on the swap
> drive will be always be near the swap data. It's also a good idea
> to put your swap partitions near the center of the disk.
#endif /* kelly */
--
Andy Davidoff
Sen. Unix SA, EECS
Tufts University
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