What does it mean when I have a non-trivial load and when I run top, there are no processes using non-trivial amounts of cpu time?For example, I have a server with this top line:top - 10:10:59 up 128 days, 23:44, 10 users,  load average: 4.00, 4.00, 4.00Tasks: 254 total,   1 running, 252 sleeping,   0 stopped,   1 zombieCpu(s):  0.1%us,  0.1%sy,  0.0%ni, 99.8%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%stMem:  65912492k total, 20628812k used, 45283680k free,   573908k buffersSwap: 33431544k total,    30376k used, 33401168k free, 12085808k cached  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND 2584 sgeadmin  20   0  416m 2536 1572 S  1.3  0.0   1265:45 sge_execd    4 root      20   0     0    0    0 S  1.0  0.0   4681:42 ksoftirqd/0...etc.
What does a high load with an empty top mean?
top;load