Swapping when memory is idle??

[Odhiambo Washington]

Hola,

I have a machine with 16GB RAM and not heavily used.
I see from `top` some things that I do not understand well.
Why would a system use swap when memory is idle?

Output of top shown below:


last pid:  2272;  load averages:  0.07,  0.19,  0.17

                                                            up 26+12:09:26
10:49:04
155 processes: 1 running, 154 sleeping
CPU:  0.1% user,  0.0% nice,  0.0% system,  0.0% interrupt, 99.9% idle
Mem: 799M Active, 6262M Inact, 4964M Laundry, 2465M Wired, 1492M Buf, 1564M
Free
Swap: 3598M Total, 3530M Used, 67M Free, 98% Inuse

-- 
Best regards,
Odhiambo WASHINGTON,
Nairobi,KE
+254 7 3200 0004/+254 7 2274 3223
"Oh, the cruft.", grep ^[^#] :-)