how to determine what process is using all the resources for one CPU on multi cpu proc

Hello,
At my colo , i get notifications if I am using two much processor.  I am trying to determine how to debug this

when i do a top  is see Cpu7
top - 14:15:09 up 17 days, 17:24,  2 users,  load average: 1.00, 1.01, 1.05
Tasks: 154 total,   1 running, 153 sleeping,   0 stopped,   0 zombie
Cpu0  :  0.7%us,  0.3%sy,  0.0%ni, 98.3%id,  0.0%wa,  0.0%hi,  0.0%si,  0.7%st
Cpu1  :  0.3%us,  0.3%sy,  0.0%ni, 99.0%id,  0.3%wa,  0.0%hi,  0.0%si,  0.0%st
Cpu2  :  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Cpu3  :  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Cpu4  :  0.0%us,  0.0%sy,  0.0%ni, 98.7%id,  0.0%wa,  0.0%hi,  0.0%si,  1.3%st
Cpu5  :  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Cpu6  :  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Cpu7  : 96.8%us,  0.0%sy,  0.0%ni,  0.0%id,  0.0%wa,  0.0%hi,  0.0%si,  3.2%st
Mem:   4030856k total,  3979688k used,    51168k free,    80876k buffers
Swap:   524284k total,    33060k used,   491224k free,  2341180k cached

is there a way to link a process to a CPU and then are there any other debugging tips to determine what is happening to debug this

thanks
randy