Here's where top hangs out on Libero. Seems it would be a better situation if Tor would actually use the second core.
top - 12:05:07 up 5 days, 21:35, 1 user, load average: 0.33, 0.43, 0.34 Tasks: 130 total, 2 running, 128 sleeping, 0 stopped, 0 zombie Cpu0 : 47.2%us, 21.0%sy, 0.0%ni, 17.6%id, 0.0%wa, 0.0%hi, 13.8%si, 0.3%st Cpu1 : 0.0%us, 0.3%sy, 0.0%ni, 99.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 1914136k total, 718704k used, 1195432k free, 139588k buffers Swap: 3981304k total, 0k used, 3981304k free, 116320k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1340 _tor 20 0 566m 224m 36m R 71.7 12.0 6168:37 tor 9887 nobody 20 0 21644 13m 892 S 7.3 0.7 0:31.85 scamper 9889 root 20 0 102m 916 772 S 0.7 0.0 0:02.80 sed 9921 root 20 0 15028 1312 992 R 0.3 0.1 0:00.19 top 1 root 20 0 19232 1480 1212 S 0.0 0.1 0:00.27 init 2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd