> I looked it up and my system has 256MB RAM. since I upgraded from a 180
> MHy machine with 96 MB RAM RAM doubled to 192MB RAM i considered 256MB
> to be ample. I do not have any out of memory notifications so that was
> not a problem I considered.

OS X doesn't have "out of memory notifications"...it just runs progressively
slower and slower and slower until it appears to stop running because the
simplest action literally takes minutes to complete.

Officially, OS X may run in 256 megabytes, but I personally find that it
runs best with at least 768 megabytes.  I don't even try to run on anything
less than 512 megabytes (and I only go as low as that on one machine because
the extra RAM for it hasn't arrived yet).


If you're seeing interesting performance problems, try the command
line/terminal command 'top'.  Look for a line similar to:
> PhysMem:  46.1M wired,  211M active,  168M inactive,  424M used, 87.8M free

If your "free" number is small (a nebulous term, I know), you're likely to
see performance issues as the virtual memory system swaps to disk.  These
issues will be heightened if you have a mostly full disk...especially if it
hasn't been defragmented in recent memory.

Swapping is reflected in the line from 'top' akin to:
> VM: 1.59G + 50.3M   19073(0) pageins, 10419(0) pageouts

If pageins and pageouts are relatively high, you're spending most of your
machine's time swapping memory from the drive to real memory.

At 256 megabytes, you'll spend a lot of time swapping... especially if you
use Classic at all!  [Classic allocates an entire gigabyte of virtual
memory...]


As has been the case on the Macintosh for nearly 20 years, more memory still
solves lots of problems.

mikel


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