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Message #144514
[Bug 1488426] Re: High CPU usage of kworker/ksoftirqd
hy i am having the same problem on my del inspiron 5555
-------------- my top listing shows this
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
3400 root 20 0 0 0 0 R 61,8 0,0 64:46.63 kworker/0:0
3 root 20 0 0 0 0 S 37,8 0,0 39:13.48 ksoftirqd/0
827 root 20 0 407788 120076 98268 S 2,0 3,5 2:02.02 Xorg
5014 flori 20 0 621176 32344 25432 S 1,7 1,0 0:02.00 gnome-terminal-
9 root 20 0 0 0 0 S 0,3 0,0 0:23.10 rcuos/0
1099 flori 20 0 1201488 141244 91212 S 0,3 4,2 4:04.16 compiz
1515 flori 20 0 583176 32960 27260 S 0,3 1,0 0:07.11 nm-applet
---------------my cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
0: 49 0 0 0 IO-APIC-edge timer
1: 190 52 45 636 IO-APIC-edge i8042
7: 1 0 0 0 IO-APIC-edge
8: 0 0 0 1 IO-APIC-edge rtc0
9: 0 0 0 0 IO-APIC-fasteoi acpi
16: 104 117 191 146 IO-APIC 16-fasteoi mmc0, snd_hda_intel
18: 12810 12796 15208 52505 IO-APIC 18-fasteoi ehci_hcd:usb3, ehci_hcd:usb4
25: 0 0 0 0 PCI-MSI-edge PCIe PME, pciehp
27: 0 0 0 0 PCI-MSI-edge PCIe PME
29: 0 0 0 0 PCI-MSI-edge PCIe PME
30: 2 10 6 30 PCI-MSI-edge xhci_hcd
31: 0 0 0 0 PCI-MSI-edge xhci_hcd
32: 0 0 0 0 PCI-MSI-edge xhci_hcd
33: 0 0 0 0 PCI-MSI-edge xhci_hcd
34: 0 0 0 0 PCI-MSI-edge xhci_hcd
36: 0 1 0 795 PCI-MSI-edge eth0
37: 8895 10818 13275 52909 PCI-MSI-edge 0000:00:11.0
38: 0 0 0 0 PCI-MSI-edge ccp-0
39: 0 0 0 0 PCI-MSI-edge ccp-1
43: 43 41 33 67 PCI-MSI-edge snd_hda_intel
44: 2859971 11 26 86 IO-APIC 8-fasteoi ath9k
45: 195622 140337 161305 908424 PCI-MSI-edge fglrx[0]@PCI:0:1:0
46: 0 0 0 0 PCI-MSI-edge fglrx[1]@PCI:1:0:0
NMI: 846 76 73 80 Non-maskable interrupts
LOC: 2778075 1326058 1332851 1598522 Local timer interrupts
SPU: 0 0 0 0 Spurious interrupts
PMI: 846 76 73 80 Performance monitoring interrupts
IWI: 0 0 0 1 IRQ work interrupts
RTR: 0 0 0 0 APIC ICR read retries
RES: 1198530 2397416 1831870 1788606 Rescheduling interrupts
CAL: 3400 2968 3613 3262 Function call interrupts
TLB: 55078 63256 62325 67116 TLB shootdowns
TRM: 0 0 0 0 Thermal event interrupts
THR: 0 0 0 0 Threshold APIC interrupts
MCE: 0 0 0 0 Machine check exceptions
MCP: 92 92 92 92 Machine check polls
HYP: 0 0 0 0 Hypervisor callback interrupts
ERR: 1
MIS: 0
help :))
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https://bugs.launchpad.net/bugs/1488426
Title:
High CPU usage of kworker/ksoftirqd
Status in HWE Next:
New
Status in linux package in Ubuntu:
In Progress
Bug description:
kworker consuming 71.5% cpu resource
ksoftirqd consuming 28.9% cpu resource
It leads to power consumption issue and sometimes leads to BT does not
work.
To manage notifications about this bug go to:
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References
