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https://bugs.launchpad.net/bugs/1462108
Title:
kworker high cpu utilization
Status in linux package in Ubuntu:
Incomplete
Bug description:
I upgraded to vivid 15.04 on my HP Sleekbook (AMD A10 CPU) and it runs
very hot. Top shows kworker taking up 60-70% CPU immediately after
rebooting and not launching any programs.
top - 17:27:55 up 10 min, 3 users, load average: 2.93, 2.75, 1.51
Tasks: 205 total, 3 running, 202 sleeping, 0 stopped, 0 zombie
%Cpu(s): 22.8 us, 35.5 sy, 0.0 ni, 39.5 id, 0.2 wa, 0.0 hi, 1.9 si, 0.0
st
KiB Mem: 5233588 total, 4715036 used, 518552 free, 56484 buffers
KiB Swap: 5468156 total, 0 used, 5468156 free. 689644 cached Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
97 root 20 0 0 0 0 R 66.0 0.0 6:13.97
kworker/2:3
3512 darla 20 0 1020444 320036 61580 S 45.8 6.1 2:02.92 chrome
22 root 20 0 0 0 0 S 34.2 0.0 3:08.83
ksoftirqd/2
3493 darla 20 0 2868728 1.492g 39876 S 30.5 29.9 2:04.76 chrome
1033 root 20 0 351108 136976 90380 R 24.9 2.6 1:46.40 Xorg
3311 darla 20 0 1085248 205976 90288 S 17.6 3.9 1:26.52 chrome
2479 darla 9 -11 630432 10824 7760 S 6.3 0.2 0:13.21
pulseaudio
3342 darla 20 0 1109672 332000 135212 S 5.6 6.3 0:29.85 chrome
3467 darla 20 0 959564 184012 60188 S 3.0 3.5 0:21.64 chrome
77 root 20 0 0 0 0 S 1.7 0.0 0:08.37
kworker/1:1
2697 darla 20 0 388040 24652 18852 S 1.7 0.5 0:00.85
xfce4-term+
3483 darla 20 0 1039356 209628 64692 S 1.7 4.0 0:23.44 chrome
3561 darla 20 0 879172 146972 64124 S 1.0 2.8 0:07.04 chrome
50 root 20 0 0 0 0 S 0.7 0.0 0:05.24
kworker/0:1
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