Can't get 100% CPU on all cores

[John Klos <john%ziaspace.com@localhost>]

Is this a NetBSD issue, or something else?

load averages:  7.99,  7.94,  7.91;               up 0+21:43:07        21:25:56
34 processes: 2 runnable, 24 sleeping, 8 on CPU
CPU0 states:  0.0% user,  100% nice,  0.0% system,  0.0% interrupt,  0.0% idle
CPU1 states:  0.0% user,  100% nice,  0.0% system,  0.0% interrupt,  0.0% idle
CPU2 states:  0.0% user, 39.7% nice,  0.0% system,  0.0% interrupt, 60.3% idle
CPU3 states:  0.0% user,  100% nice,  0.0% system,  0.0% interrupt,  0.0% idle
CPU4 states:  0.0% user,  100% nice,  0.0% system,  0.0% interrupt,  0.0% idle
CPU5 states:  0.0% user,  100% nice,  0.0% system,  0.0% interrupt,  0.0% idle
CPU6 states:  0.0% user,  100% nice,  0.0% system,  0.0% interrupt,  0.0% idle
CPU7 states:  0.0% user, 99.6% nice,  0.4% system,  0.0% interrupt,  0.0% idle
Memory: 1732M Act, 10M Exec, 1698M File, 27G Free
Swap: 8193M Total, 8193M Free

  PID USERNAME PRI NICE   SIZE   RES STATE      TIME   WCPU    CPU COMMAND
 6102 john       5   20  8256K 8124K RUN/3     25:56 99.02% 99.02% dnetc
10545 john       5   20  8212K 4540K CPU/4     24:45 99.02% 99.02% dnetc
24632 john       5   20  8200K 4544K CPU/5     25:01 94.58% 94.58% dnetc
14493 john       5   20  8216K 4552K RUN/6     24:34 93.65% 93.65% dnetc
10715 john       6   20  8204K 4540K CPU/6     25:21 92.72% 92.72% dnetc
13965 john       5   20  8224K 4540K CPU/0     25:14 89.75% 89.75% dnetc
 8117 john       5   20  8220K 2508K CPU/7     25:52 82.03% 82.03% dnetc
28320 john       5   20  8208K 4552K CPU/1     24:20 81.84% 81.84% dnetc


For some reason I can't get 100% CPU on all eight cores. This is with 
netbsd-6 compiled from two days ago on an eight core AMD Zambezi:

cpu0 at mainbus0 apid 16: AMD FX(tm)-8150 Eight-Core Processor           , 
id 0x600f12
...


Nothing else is running on the machine. Strange...

Ideas?

John