OS: SLED 11 SP2 x864
HW: Dell Latitude E5420
Didn’t experience/face the following problem with SLED 11 SP1 i586 on the same HW.
Problem occurs only when:
if notebook is running on AC Power, and battery is not fully(100%) charged
Solution/remedy:
problem gone as soon battery charged 100% or if I disconnect the power, i.e put the system on DC power(on battery)
Problem:
1 - Mouse/Curser start moving very slow… like you are accessing the system via vnc.
2 - ‘top’ shows that ‘kworker’ alone is consuming 36% of cpu constantly
top - 00:38:32 up 59 min, 4 users, load average: 1.91, 1.57, 0.86
Tasks: 188 total, 1 running, 187 sleeping, 0 stopped, 0 zombie
Cpu(s): 2.7%us, 3.1%sy, 0.0%ni, 92.3%id, 2.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 8085988k total, 2725724k used, 5360264k free, 144076k buffers
Swap: 2096444k total, 0k used, 2096444k free, 2140064k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
10669 root 20 0 0 0 0 D 22 0.0 0:56.15 kworker/3:3
10606 root 20 0 0 0 0 S 14 0.0 0:49.80 kworker/1:1
93 root 20 0 0 0 0 D 4 0.0 0:05.49 kworker/u:5
2444 root 20 0 132m 25m 11m S 2 0.3 0:54.40 X
4630 msharf 20 0 240m 17m 11m S 2 0.2 0:05.26 gnome-terminal
1 root 20 0 10528 876 744 S 0 0.0 0:02.14 init
2 root 20 0 0 0 0 S 0 0.0 0:00.00 kthreadd 3 - ps aux |grep ‘kworker’ shows following
root 23153 0.2 0.0 0 0 ? S 12:53 0:03 [kworker/1:2]
root 26633 0.1 0.0 0 0 ? S 12:57 0:01 [kworker/3:0]
root 26818 8.7 0.0 0 0 ? [COLOR="#FF0000"][B] D[/B][/COLOR] 12:57 1:59 [kworker/2:0]
root 27172 0.0 0.0 0 0 ? S 11:59 0:00 [kworker/1:3]
root 27402 6.5 0.0 0 0 ? S 12:57 1:26 [kworker/0:1]
root 28852 0.0 0.0 0 0 ? S 12:05 0:02 [kworker/1:0]
root 92 0.1 0.0 0 0 ? [COLOR="#FF0000"][B]D[/B][/COLOR] 11:35 0:10 [kworker/u:4]
root 93 0.3 0.0 0 0 ? S 11:35 0:21 [kworker/u:5]
root 4743 0.0 0.0 0 0 ? S 13:06 0:00 [kworker/3:1]
root 5759 4.5 0.0 0 0 ? S 12:38 1:52 [kworker/0:3]
root 7327 7.3 0.0 0 0 ? S 13:08 0:51 [kworker/2:2]
root 12484 0.0 0.0 0 0 ? S 13:12 0:00 [kworker/0:0]
root 13891 0.0 0.0 0 0 ? S 13:14 0:00 [kworker/2:1]
root 15858 0.0 0.0 0 0 ? S 11:48 0:02 [kworker/3:2]
root 16894 0.0 0.0 0 0 ? S 12:48 0:00 [kworker/3:3]
root 16926 0.0 0.0 0 0 ? S 12:23 0:01 [kworker/1:1]
root 18354 0.0 0.0 0 0 ? S 13:18 0:00 [kworker/0:2]
what should I do ?
I have SLE support… May I open a Bug Report ? how ?
Please help
Regards
Muhammad Sharfuddin