memory usage displsy

[Per olof Ljungmark]

Bill Moran wrote:
> In response to Per olof Ljungmark <peo at intersonic.se>:
>> What is a good way to find out how memory is used? Have a 6.4 box where 
>> memory is used by something but I fail to see what is using it - tried 
>> different switches to ps(1), tried the stat tools but a big chunk of 
>> memory does not show at all.
>>
>> A proper tool for analyzing memory usage "live", this is a production box?
> 
> I've always been able to get what I need from top.  You can do -o res to
> sort by resident memory usage, which helps.
> 

Well, my problem is that if I add up all I *can* see in top or ps it 
never gets near the by now 3G plus memory shown as "Active". Maybe one 
gig is accounted for,