This is true, but there is more to it. What you are describing is condition on a brink of thrashing--condition when you MUST increase available RAM. However, RAM to be used as pure filesystem cache is advantageous far beyond pageout time: depending on your usage patterns (re-reading or modifying limited set of files) it can considerably reduce the number of pageins, and enable things otherwise impossible if you have slow disks. E.g. 1 Gig of RAM makes possible auditioning of 36 audio tracks simultaneously on a TiBook, where faster disk is not exactly an option (and FireWire does not help because it uses more CPU which is better used to process tracks in real time).Originally posted by vanguard
Here's a better test, run "vm_stat 5" (without the quotes) and watch the right column. That reports page outs. Ignore the first line and the subsequent "first" lines. (You'll see what I mean.)
If the right column is above zero very often you would benefit from more ram. Unless you like to work with a lot of large apps open I would guess that 1/2 gig of ram is more than enough.
Yeah....what ELSE are you gonna do with those empty ram slots? An empty ram slot is a terrible thing to waste.Originally posted by pianophile
Add as much memory as you can afford. For all practical purposes there is no such thing as having too much RAM.