"Marton Fabo" wrote:

> 	Hi folks!

G'day!

> I have a good little 486 as modem-LAN router, with 1.4.1. It has 12 
> megs of RAM, but the OS only uses 8 of it:
> 
> NetBSD 1.4.1 (FELIX) #6: Sun Nov 21 00:32:42 CET 1999
>     root@gerzson:/usr/src-1.4.1/sys/arch/i386/compile/FELIX
> cpu0: family 4 model 9 step 4
> cpu0: AMD Am486DX4 W/B or Am5x86 W/B 150 (486-class)
> real mem  = 12189696
> avail mem = 8970240
> using 174 buffers containing 712704 bytes of memory
> mainbus0 (root)
> [...]

The means that of the 12MB you have, 8MB is available for user programs.
The other 4MB is taken up by various kernel bits and pieces, including
approx 700kB for filesystem buffers.

ps:  Almost over-configured for a modem box :-)

Simon.