Impossible high cpu-time values for migration threads

From: Markus Trippelsdorf
Date: Thu Nov 17 2011 - 17:17:34 EST


Just saw this for the first time:

1 [|| 2.4%] Tasks: 63, 31 thr, 54 kthr; 1 running
2 [|| 1.7%] Load average: 0.03 0.06 0.36
3 [|| 1.0%] Uptime: 06:36:59
4 [|| 1.0%]
Mem[|||||||||||||||||||||||||||||||||| 1427/7977MB]
Mem:7977M used:1427M buffers:0M cache:2604M
Swp[| 0/2047MB]

PID USER PRI NI VIRT RES SHR S CPU% MEM% TIME+ Command
11 root RT 0 0 0 0 S 0.0 0.0 5h38:27 migration/2
14 root RT 0 0 0 0 S 0.0 0.0 5h30:29 migration/3
1476 root 20 0 97672 38928 5024 S 1.0 0.5 4:49.06 /usr/bin/X -nolisten tcp :0 -auth /home/markus/.serverauth.1459
1281 markus 20 0 931M 317M 40592 S 0.0 4.0 4:19.17 firefox
1538 markus 20 0 200M 34544 18848 S 0.0 0.4 2:43.89 konsole -e /home/markus/start_screen
868 mpd 20 0 294M 20336 4868 S 0.0 0.2 2:04.88 mpd --no-daemon
...

As you can see the machine has an uptime of 06:36:59 and the two
migration threads both show greater than 5h30min cpu-time.

(Linux 3.2.0-rc2-00046-g317bfe8 on amd64)

--
Markus
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