use sysctl and vm_stat to get up-to-date mem stats. also lump in wired memory with active memory.
use sysctl and vm_stat to get up-to-date mem stats. also lump in wired memory with active memory.

http-418/ohai,cmluciano/ohai,mattray/ohai,shtzr840329/ohai,juliandunn/ohai,sh9189/ohai,tas50/ohai-1,jaymzh/ohai,btm/ohai,jseely/ohai,adamleff/ohai,cmluciano/ohai,jaymzh/ohai,zshuo/ohai,davide125/ohai,dreamnite/ohai,Juniper/ohai,numericillustration/ohai,jbfavre/ohai,acaiafa/ohai,sh9189/ohai,chef/ohai,davide125/ohai,juliandunn/ohai,johnbellone/ohai,jseely/ohai,btm/ohai,acaiafa/ohai,tas50/ohai-1,n-marton/ohai,phreakocious/ohai,criteo-forks/ohai,chef/ohai,mattray/ohai,nathwill/ohai,n-marton/ohai,glennmatthews/ohai,Fodoj/ohai,bougyman/ohai,jbfavre/ohai,johnbellone/ohai,glennmatthews/ohai,higanworks/ohai,phreakocious/ohai,higanworks/ohai,bougyman/ohai,zshuo/ohai,Fodoj/ohai,375gnu/ohai,Juniper/ohai,criteo-forks/ohai,numericillustration/ohai,shtzr840329/ohai,dreamnite/ohai,adamleff/ohai,375gnu/ohai,nathwill/ohai,http-418/ohai