ps -eo pid,vsz,rss,user,cmd|more
at the top 10 swap consumers, try:
ps -eo vsz,rss,args | awk '{print $1-$2" "$3;}'| sort -rn | head
ps -eo vsz,rss,pid,args | awk '{print $1-$2" "$3 " " $4;}'| sort -rn |head -200
lsof -p PID
du -cms * |sort -rn |head -30