CPU usage high but near not much processes?

Can someone enlighten me? When I run top, the combined cpu usage is 3% but my processes are not even using 1% of the cpu usage?

21:36:13 up 2 days, 17:38, 1 user, load average: 0.16, 0.16, 0.18
64 processes: 63 sleeping, 1 running, 0 zombie, 0 stopped
CPU0 states: 1.0% user 0.4% system 0.0% nice 0.0% iowait 98.0% idle
CPU1 states: 2.0% user 1.3% system 0.0% nice 0.0% iowait 96.1% idle
Mem: 4017112k av, 4003584k used, 13528k free, 0k shrd, 126880k buff
685612k active, 3030480k inactive
Swap: 9212760k av, 885296k used, 8327464k free 3054456k cached

PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME CPU COMMAND
1 root 15 0 1312 452 1276 S 0.0 0.0 0:00 1 init
3266 root 15 0 1372 524 1320 S 0.0 0.0 0:00 0 syslogd
3277 named 21 0 14724 2104 4676 S 0.0 0.0 0:00 0 named
3291 root 16 0 3456 1064 3348 S 0.0 0.0 0:00 1 sshd
3332 root 15 0 9048 2076 2608 S 0.0 0.0 0:00 0 chkservd
3429 root 15 0 20112 8576 1992 S 0.0 0.2 0:00 0 clamd
3435 mailnull 16 0 6644 1564 6008 S 0.0 0.0 0:00 0 exim
3444 mailnull 17 0 6612 1476 6008 S 0.0 0.0 0:00 1 exim
3449 root 15 0 2772 1356 2344 S 0.0 0.0 0:00 0 antirelayd
3610 root 15 0 23892 6316 3488 S 0.0 0.1 0:00 1 spamd
3688 root 16 0 5712 1384 5348 S 0.0 0.0 0:00 0 pure-ftpd
3691 root 16 0 3348 684 3132 S 0.0 0.0 0:00 1 pure-authd
3706 root 15 0 1372 568 1316 S 0.0 0.0 0:00 0 crond
3734 root 21 0 2044 860 1936 S 0.0 0.0 0:00 1 mysqld_safe
3767 mysql 16 0 36348 5840 3760 S 0.0 0.1 0:00 1 mysqld
5130 root 18 0 1328 396 1284 S 0.0 0.0 0:00 0 portsentry
5453 mailnull 15 0 5360 1980 2984 S 0.0 0.0 0:00 0 eximstats
5492 root 34 19 12080 5484 3308 S N 0.0 0.1 0:00 1 cpanellogd
24192 root 16 0 1984 748 1684 S 0.0 0.0 0:00 0 xinetd
24395 root 16 0 24712 6564 3488 S 0.0 0.1 0:00 0 spamd
26606 cpanel 18 0 3784 1268 3376 S 0.0 0.0 0:00 1 stunnel-4.04loc
26619 root 16 0 11460 3092 8952 S 0.0 0.0 0:00 0 cpsrvd
1664 root 16 0 25704 17M 3488 S 0.0 0.4 0:00 1 spamd
19680 root 15 0 2224 1208 1936 S 0.0 0.0 0:00 0 bash
14269 mailman 24 0 7332 4380 4448 S 0.0 0.1 0:00 1 mailmanctl
14272 mailman 15 0 7304 4520 4396 S 0.0 0.1 0:00 1 python
14273 mailman 15 0 7312 4480 4396 S 0.0 0.1 0:00 0 python
14274 mailman 15 0 7308 4296 4396 S 0.0 0.1 0:00 1 python
14275 mailman 15 0 7304 4160 4396 S 0.0 0.1 0:00 0 python
14276 mailman 15 0 7340 4308 4396 S 0.0 0.1 0:00 0 python
14277 mailman 15 0 7388 4284 4396 S 0.0 0.1 0:00 1 python
14278 mailman 16 0 7300 4360 4396 S 0.0 0.1 0:00 0 python
14279 mailman 15 0 7300 4248 4396 S 0.0 0.1 0:00 0 python
15582 root 17 0 9880 7788 7580 S 0.0 0.1 0:00 0 cppop
13690 root 15 0 5672 3368 4612 S 0.0 0.0 0:00 1 httpd
13711 root 15 0 4736 3216 2892 S 0.0 0.0 0:00 1 leechprotect
21804 root 16 0 11476 3656 8952 S 0.0 0.0 0:00 0 cpsrvd
22329 root 16 0 1892 1048 1644 R 0.0 0.0 0:00 1 top

 

 

 

 

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