virtual memory swap size

David A. Sinck plug-discuss@lists.PLUG.phoenix.az.us
Mon, 14 May 2001 17:24:56 -0700


\_ SMTP quoth Craig White on 5/14/2001 15:26 as having spake thusly:
\_
\_ Just looking to pick everyone's brain here.
\_ 
\_ If you have 128Mb RAM what would be the optimal size to make the swap
\_ partition?  If you are running HTTP off this machine would it matter?
\_ 
\_ How about 512MB RAM or are there hard and fast rules?
\_ 
\_ I have seen suggestions from 1MB over the real amount of RAM to 2x the real
\_ amount of RAM so I am unclear.

My rule of thumb is

(real mem + 10M/ xterminal) * server_fudge_factor

And swapping isn't necessarily bad...so long as you're not doing it.
:-)  

I have a program that will exhaust resources as it proceeds and once
it hits the real mem barrier, performance tanks and the disks chatter
to the point I almost renamed the machine 'maytag'.  Can't wait to try
that on a newer machine that has 'current' technology in it and OpenGL
in firmware.

David