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测试平台如下:
powerpc系统,双核,内核版本:2.6.34.12
测试过程中出现events/1耗cpu达99%的情况,并且系统不可恢复,top结果如下:
自己的驱动代码中没有调用schedule_work或schedule_delayed_work。- top - 09:37:33 up 1:03, 2 users, load average: 14.18, 8.01, 4.84
- Tasks: 169 total, 10 running, 159 sleeping, 0 stopped, 0 zombie
- Cpu(s): 4.7%us, 5.3%sy, 0.0%ni, 90.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
- Mem: 887616k total, 854428k used, 33188k free, 2208k buffers
- Swap: 0k total, 0k used, 0k free, 133252k cached
- PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
- 32 root -2 -20 0 0 0 R 101 0.0 2:52.76 events/1
- 917 root -91 0 2828 1104 844 R 4 0.1 0:00.03 top
- 493 root 20 0 584m 42m 1748 R 2 4.9 1:30.76 1_l2_sec-recv
- 1 root 20 0 4032 804 716 S 0 0.1 0:02.97 init
- 2 root 20 0 0 0 0 S 0 0.0 0:00.00 kthreadd
- 3 root RT 0 0 0 0 S 0 0.0 0:00.00 migration/0
- 4 root -50 0 0 0 0 S 0 0.0 0:00.00 sirq-high/0
- 5 root -50 0 0 0 0 R 0 0.0 0:02.35 sirq-timer/0
- 6 root -50 0 0 0 0 S 0 0.0 0:00.00 sirq-net-tx/0
- 7 root -50 0 0 0 0 S 0 0.0 0:02.35 sirq-net-rx/0
- 8 root -50 0 0 0 0 S 0 0.0 0:00.00 sirq-block/0
- 9 root -50 0 0 0 0 S 0 0.0 0:00.00 sirq-block-iopo
- 10 root -50 0 0 0 0 S 0 0.0 0:00.00 sirq-tasklet/0
- 11 root -50 0 0 0 0 S 0 0.0 0:00.00 sirq-sched/0
- 12 root -50 0 0 0 0 S 0 0.0 0:00.00 sirq-hrtimer/0
- 13 root -50 0 0 0 0 R 0 0.0 0:03.07 sirq-rcu/0
- 14 root RT 0 0 0 0 S 0 0.0 0:00.00 posixcputmr/0
- 15 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/0
- 16 root 10 -10 0 0 0 S 0 0.0 0:00.00 desched/0
- 17 root RT 0 0 0 0 S 0 0.0 0:00.00 migration/1
- 18 root RT 0 0 0 0 S 0 0.0 0:00.00 posixcputmr/1
- 19 root -50 0 0 0 0 S 0 0.0 0:00.00 sirq-high/1
- 20 root -50 0 0 0 0 R 0 0.0 0:06.78 sirq-timer/1
- 21 root -50 0 0 0 0 S 0 0.0 0:00.02 sirq-net-tx/1
- 22 root -50 0 0 0 0 S 0 0.0 0:00.20 sirq-net-rx/1
- 23 root -50 0 0 0 0 S 0 0.0 0:00.00 sirq-block/1
- 24 root -50 0 0 0 0 S 0 0.0 0:00.00 sirq-block-iopo
- 25 root -50 0 0 0 0 S 0 0.0 0:00.01 sirq-tasklet/1
- 26 root -50 0 0 0 0 S 0 0.0 0:00.00 sirq-sched/1
- 27 root -50 0 0 0 0 R 0 0.0 0:28.36 sirq-hrtimer/1
- 28 root -50 0 0 0 0 R 0 0.0 0:07.86 sirq-rcu/1
- 29 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/1
- 30 root 10 -10 0 0 0 S 0 0.0 0:00.00 desched/1
- 31 root -2 -20 0 0 0 S 0 0.0 0:00.15 events/0
复制代码
请教下大神,这种问题应该如何定位?
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