thank you for replay.
when load increase, i run "Top" and "aTop" and "hTop" and:
"ps -eo pid,user,%cpu,%mem,etime,args"
but all of this tools show that load is heavy and lsphp5 use load then i search user of pid with:
"ps -ef | grep [PID]"
but show root in user field.
what can i do?