Here are a few more one liners that I use quite often to locate large number of apache connections, large numbers of site connections, the busiest site on the server and busiest script on the server.
large number of apache connections
netstat -plan | grep :80 | awk '{print $5}' | sed 's/:.*$//' | sort | uniq -c | sort -rn |head
site connections
/usr/bin/lynx -dump -width 500 http://127.0.0.1/whm-server-status | awk 'BEGIN { FS = " " } ; { print $12 }' | sed '/^$/d' | sort | uniq -c
busiest site
/usr/bin/lynx -dump -width 500 http://127.0.0.1/whm-server-status | grep GET | awk '{print $12}' | sort | uniq -c | sort -rn | head
busiest script
/usr/bin/lynx -dump -width 500 http://127.0.0.1/whm-server-status | grep GET | awk '{print $14}' | sort | uniq -c | sort -rn | head
Try it for yourself!