Also, please collect fprofile another 3-4 times and share it here. Just to ensure we do not miss any other top-talker. Vector is not necessary, just fprofile will do.
get performance cpu all detail
clear fprofile
set fprofile packet en
set fprofile packet start
get fprofile (repeat this 1 command till it says 'ON and STOP')
get fprofile packet
get fprofile packet ip
get fprofile packet none-ip
Please repeat the cycle 3-4 times. Also, ensure that the data is collected only when the CPU utilisation is high.