My server's CPU shows high average LOAD but the %CPU usage is very low.
How can I investigate this issue and find the root cause?
Thank you.
top - 07:40:21 up 339 days, 10:24, 1 user, >>load average: 3.88, 4.30, 3.93<<
Tasks: 155 total, 2 running, 153 sleeping, 0 stopped, 0 zombie
Cpu(s): 95.4%us, 3.3%sy, 0.2%ni, 0.8%id, 0.0%wa, 0.0%hi, 0.3%si, 0.0%st
Mem: 15132964k total, 14578884k used, 554080k free, 190508k buffers
Swap: 8388604k total, 3092292k used, 5296312k free, 7686120k cached