top on freebsd and wired memory

[kapil jain]

Hi,
 
 I have a question, top on freebsd displays active, inactive and wired memory.
 Since kernel memory has to be non-pageable isn't it that user process resident memory should be active + inactive?
 However I see some discrepancy. For eg. active is 34M, inactive 116M.
 top -s 100 gives me resident sizes of all processes, if I sum them up it comes to about 75M. So where is the rest of 116+34-75 = 75M?
 
 thanks
 kapil