You are using Linux, and you run top, and you see this:
top - 21:38:04 up 14 days, 12:12, 1 user, load average: 5.30, 5.10, 4.90 Tasks: 54 total, 15 running, 39 sleeping, 0 stopped, 0 zombie %Cpu(s): 11.7 us, 13.7 sy, 0.0 ni, 74.6 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
How can the load average be so high with so much CPU being idle?
The server has many CPUs. Having a load above 1 is completely normal for a healthy server without being overloaded if the server has many CPUs or many cores to its CPU. A server load of 1 is the max for a server with a single-core CPU. A server with 8 CPUs can have a load under 8 and be operating under its maximum capacity. A server with 20 CPUs could have a load of 5.3 and a tremendous amount of CPU in idle.
For more information, see this posting.