[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2022-09-02 Thread Timo Aaltonen 
** Changed in: hwe-next
   Status: New => Invalid

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Title:
  High CPU usage of kworker/ksoftirqd

Status in HWE Next:
  Invalid
Status in linux package in Ubuntu:
  Confirmed

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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2019-10-11 Thread Benedikt Nerb 
UPDATE: I solved *my* issue by disabling auotsuspend in the grub config. Now I 
don't get the high CPU usage anymore.
Might help someone.

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Title:
  High CPU usage of kworker/ksoftirqd

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Confirmed

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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2019-10-09 Thread Benedikt Nerb 
So, first of all: Sorry for (kinda) 'reopening' this thread after such a long 
time.
Today I noticed something very strange. One of my (16) CPU cores was pinned at 
100%. After a bit of googling I stumbled upon this thread and read about people 
pointing towards USB.
So what I did was unplugging everything except for my keyboard and mouse.
Then, one at a time I plugged everything back in until the core got loaded too 
100% again. Turns out it's an USB Hub while nothing is plugged in. This stays 
that way (even if I plug anything in) until I plug in a specific device: A SATA 
to USB adapter/bridge *with an SSD attached*

lsusb shows it as:
Bus 008 Device 005: ID 174c:1153 ASMedia Technology Inc. ASM1153 SATA 3Gb/s 
bridge

I'm running Ubuntu 19.10 with kernel 5.3.0-13-generic.

Is there a fix yet?
If not, I hope I can contribute to fixing/diagnosing this bug.

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Title:
  High CPU usage of kworker/ksoftirqd

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Confirmed

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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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2019-08-26 Thread Andrew Collett 
So I see this is the Ubuntu bug tracker, yet I have the same in Solus,
Kernel 5.2.9-125.current.

Not sure this is helpful, but I'll add my USB devices anyway in case it helps 
narrow it down. 
This happens on an off, single core going to near 100% usage with USB PM to 
blame it seems. Would a perf report help?

This happened today, when I had a dell USB-C monitor plugged in, then 2
mice, a keyboard and a headset plugged in through that. The below does
NOT include these, so let me know if you'd like usb-devices with all
peripherals plugged in.

usb_devices->
T:  Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=480 MxCh=12
D:  Ver= 2.00 Cls=09(hub  ) Sub=00 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=1d6b ProdID=0002 Rev=05.02
S:  Manufacturer=Linux 5.2.9-125.current xhci-hcd
S:  Product=xHCI Host Controller
S:  SerialNumber=:00:14.0
C:  #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA
I:  If#=0x0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub

T:  Bus=01 Lev=01 Prnt=01 Port=09 Cnt=01 Dev#=  6 Spd=12  MxCh= 0
D:  Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=27c6 ProdID=5385 Rev=01.00
S:  Manufacturer=HTMicroelectronics
S:  Product=Goodix Fingerprint Device 
S:  SerialNumber=HTK32
C:  #Ifs= 2 Cfg#= 1 Atr=a0 MxPwr=100mA
I:  If#=0x0 Alt= 0 #EPs= 1 Cls=02(commc) Sub=02 Prot=01 Driver=cdc_acm
I:  If#=0x1 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=cdc_acm

T:  Bus=01 Lev=01 Prnt=01 Port=04 Cnt=02 Dev#=  2 Spd=480 MxCh= 0
D:  Ver= 2.01 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=0c45 ProdID=6723 Rev=80.08
S:  Manufacturer=CN09357GLOG00913AAGAA01
S:  Product=Integrated_Webcam_HD
C:  #Ifs= 2 Cfg#= 1 Atr=80 MxPwr=500mA
I:  If#=0x0 Alt= 0 #EPs= 1 Cls=0e(video) Sub=01 Prot=00 Driver=uvcvideo
I:  If#=0x1 Alt= 0 #EPs= 0 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo

T:  Bus=01 Lev=01 Prnt=01 Port=06 Cnt=03 Dev#=  4 Spd=12  MxCh= 0
D:  Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=0489 ProdID=e0a2 Rev=00.01
C:  #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA
I:  If#=0x0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
I:  If#=0x1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb

T:  Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=5000 MxCh= 6
D:  Ver= 3.00 Cls=09(hub  ) Sub=00 Prot=03 MxPS= 9 #Cfgs=  1
P:  Vendor=1d6b ProdID=0003 Rev=05.02
S:  Manufacturer=Linux 5.2.9-125.current xhci-hcd
S:  Product=xHCI Host Controller
S:  SerialNumber=:00:14.0
C:  #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA
I:  If#=0x0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub

T:  Bus=03 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=480 MxCh= 2
D:  Ver= 2.00 Cls=09(hub  ) Sub=00 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=1d6b ProdID=0002 Rev=05.02
S:  Manufacturer=Linux 5.2.9-125.current xhci-hcd
S:  Product=xHCI Host Controller
S:  SerialNumber=:39:00.0
C:  #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA
I:  If#=0x0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub

T:  Bus=04 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=5000 MxCh= 2
D:  Ver= 3.00 Cls=09(hub  ) Sub=00 Prot=03 MxPS= 9 #Cfgs=  1
P:  Vendor=1d6b ProdID=0003 Rev=05.02
S:  Manufacturer=Linux 5.2.9-125.current xhci-hcd
S:  Product=xHCI Host Controller
S:  SerialNumber=:39:00.0
C:  #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA
I:  If#=0x0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub

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Title:
  High CPU usage of kworker/ksoftirqd

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Confirmed

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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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2019-07-24 Thread Brad Figg 
** Tags added: cscc

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Title:
  High CPU usage of kworker/ksoftirqd

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Confirmed

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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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2019-07-17 Thread fergie 
Sure, usb-devices gives the following ->

T:  Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=480 MxCh=12
D:  Ver= 2.00 Cls=09(hub  ) Sub=00 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=1d6b ProdID=0002 Rev=04.15
S:  Manufacturer=Linux 4.15.0-54-generic xhci-hcd
S:  Product=xHCI Host Controller
S:  SerialNumber=:00:14.0
C:  #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA
I:  If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub

T:  Bus=01 Lev=01 Prnt=01 Port=03 Cnt=01 Dev#=  2 Spd=480 MxCh= 4
D:  Ver= 2.10 Cls=09(hub  ) Sub=00 Prot=02 MxPS=64 #Cfgs=  1
P:  Vendor=0424 ProdID=2134 Rev=50.00
S:  Manufacturer=SMSC
S:  Product=USB2134B
C:  #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA
I:  If#= 0 Alt= 1 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=02 Driver=hub

T:  Bus=01 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#= 35 Spd=480 MxCh= 3
D:  Ver= 2.10 Cls=09(hub  ) Sub=00 Prot=02 MxPS=64 #Cfgs=  1
P:  Vendor=03f0 ProdID=1847 Rev=59.72
S:  Manufacturer=GenesysLogic
S:  Product=USB2.1 Hub
C:  #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=100mA
I:  If#= 0 Alt= 1 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=02 Driver=hub

T:  Bus=01 Lev=03 Prnt=35 Port=02 Cnt=01 Dev#= 37 Spd=12  MxCh= 0
D:  Ver= 2.01 Cls=11() Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=1b20 ProdID=0400 Rev=01.00
S:  Manufacturer=MSTAR
S:  Product=BillBoard
S:  SerialNumber=12345
C:  #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=0mA
I:  If#= 0 Alt= 0 #EPs= 0 Cls=11() Sub=00 Prot=00 Driver=(none)

T:  Bus=01 Lev=02 Prnt=02 Port=01 Cnt=02 Dev#=  6 Spd=1.5 MxCh= 0
D:  Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
P:  Vendor=413c ProdID=2106 Rev=01.77
S:  Manufacturer=Dell
S:  Product=Dell QuietKey Keyboard
C:  #Ifs= 1 Cfg#= 1 Atr=a0 MxPwr=100mA
I:  If#= 0 Alt= 0 #EPs= 1 Cls=03(HID  ) Sub=01 Prot=01 Driver=usbhid

T:  Bus=01 Lev=02 Prnt=02 Port=02 Cnt=03 Dev#=  8 Spd=1.5 MxCh= 0
D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
P:  Vendor=413c ProdID=3012 Rev=43.01
S:  Manufacturer=Dell
S:  Product=Dell USB Optical Mouse
C:  #Ifs= 1 Cfg#= 1 Atr=a0 MxPwr=100mA
I:  If#= 0 Alt= 0 #EPs= 1 Cls=03(HID  ) Sub=01 Prot=02 Driver=usbhid

T:  Bus=01 Lev=02 Prnt=02 Port=03 Cnt=04 Dev#= 36 Spd=480 MxCh= 3
D:  Ver= 2.10 Cls=09(hub  ) Sub=00 Prot=02 MxPS=64 #Cfgs=  1
P:  Vendor=03f0 ProdID=1847 Rev=59.72
S:  Manufacturer=GenesysLogic
S:  Product=USB2.1 Hub
C:  #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=100mA
I:  If#= 0 Alt= 1 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=02 Driver=hub

T:  Bus=01 Lev=03 Prnt=36 Port=02 Cnt=01 Dev#= 38 Spd=12  MxCh= 0
D:  Ver= 2.01 Cls=11() Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=1b20 ProdID=0400 Rev=01.00
S:  Manufacturer=MSTAR
S:  Product=BillBoard
S:  SerialNumber=12345
C:  #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=0mA
I:  If#= 0 Alt= 0 #EPs= 0 Cls=11() Sub=00 Prot=00 Driver=(none)

T:  Bus=01 Lev=01 Prnt=01 Port=06 Cnt=02 Dev#=  3 Spd=12  MxCh= 0
D:  Ver= 2.00 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=8087 ProdID=0a2b Rev=00.10
C:  #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA
I:  If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
I:  If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb

T:  Bus=01 Lev=01 Prnt=01 Port=08 Cnt=03 Dev#=  5 Spd=480 MxCh= 0
D:  Ver= 2.01 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=05c8 ProdID=0808 Rev=01.07
S:  Manufacturer=Generic
S:  Product=HP HD Camera
S:  SerialNumber=0001
C:  #Ifs= 4 Cfg#= 1 Atr=80 MxPwr=500mA
I:  If#= 0 Alt= 0 #EPs= 1 Cls=0e(video) Sub=01 Prot=01 Driver=uvcvideo
I:  If#= 1 Alt= 0 #EPs= 0 Cls=0e(video) Sub=02 Prot=01 Driver=uvcvideo
I:  If#= 2 Alt= 0 #EPs= 1 Cls=0e(video) Sub=01 Prot=01 Driver=uvcvideo
I:  If#= 3 Alt= 0 #EPs= 0 Cls=0e(video) Sub=02 Prot=01 Driver=uvcvideo

T:  Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=5000 MxCh= 6
D:  Ver= 3.00 Cls=09(hub  ) Sub=00 Prot=03 MxPS= 9 #Cfgs=  1
P:  Vendor=1d6b ProdID=0003 Rev=04.15
S:  Manufacturer=Linux 4.15.0-54-generic xhci-hcd
S:  Product=xHCI Host Controller
S:  SerialNumber=:00:14.0
C:  #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA
I:  If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub

T:  Bus=02 Lev=01 Prnt=01 Port=03 Cnt=01 Dev#=  2 Spd=5000 MxCh= 4
D:  Ver= 3.00 Cls=09(hub  ) Sub=00 Prot=03 MxPS= 9 #Cfgs=  1
P:  Vendor=0424 ProdID=5534 Rev=50.00
S:  Manufacturer=SMSC
S:  Product=USB5534B
C:  #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA
I:  If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub

T:  Bus=02 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#= 17 Spd=5000 MxCh= 2
D:  Ver= 3.10 Cls=09(hub  ) Sub=00 Prot=03 MxPS= 9 #Cfgs=  1
P:  Vendor=03f0 ProdID=0620 Rev=59.72
S:  Manufacturer=GenesysLogic
S:  Product=USB3.1 Hub
C:  #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA
I:  If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub

T:  Bus=02 Lev=02 Prnt=02 Port=03 Cnt=02 Dev#= 18 Spd=5000 MxCh= 2
D:  Ver= 3.10 Cls=09(hub  ) Sub=00 Prot=03 MxPS= 9 #Cfgs=  1
P:  Vendor=03f0 ProdID=0620 Rev=59.72
S:  Manufacturer=GenesysLogic
S:  Product=USB3.1 Hub
C:  #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA
I:  If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub

T:  Bus=03 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=

[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2019-07-16 Thread AceLan Kao 
Could you upload the result of usb-devices?
This is a pretty old issue and I'm wondering which USB chip is still not doing 
it well.

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Title:
  High CPU usage of kworker/ksoftirqd

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Confirmed

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:
https://bugs.launchpad.net/hwe-next/+bug/1488426/+subscriptions

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2019-07-16 Thread fergie 
FWIW disabling dynamic USB power management in kernel seems to fix this
issue for me -> https://askubuntu.com/a/1054515/279682 (Ubuntu 18.04.2
LTS)

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Title:
  High CPU usage of kworker/ksoftirqd

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Confirmed

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:
https://bugs.launchpad.net/hwe-next/+bug/1488426/+subscriptions

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2019-07-16 Thread fergie 
This problem still affects my relaitively fresh Ubuntu -> Linux
4.15.0-52-generic #56-Ubuntu SMP Tue Jun 4 22:49:08 UTC 2019 x86_64
x86_64 x86_64 GNU/Linux

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Title:
  High CPU usage of kworker/ksoftirqd

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Confirmed

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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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2019-03-05 Thread Yu Lou 
The bug also affects me on ubuntu 18.10 with the latest kernel (Linux
4.18.0-15-generic #16pop2-Ubuntu SMP Fri Feb 22 17:07:14 UTC 2019 x86_64
x86_64 x86_64 GNU/Linux)

I'm using DELL XPS 15 with a usb type-c hub produced by Ugreen.

Here is the perf report:

Samples: 43K of event 'cycles:ppp', Event count (approx.): 39008781644
  Children  Self  Command  Shared Object  Symbol
+   88.47% 0.00%  kworker/4:2+pm   [kernel.kallsyms]  [k] 
ret_from_fork
+   88.47% 0.00%  kworker/4:2+pm   [kernel.kallsyms]  [k] 
kthread
+   88.47% 0.01%  kworker/4:2+pm   [kernel.kallsyms]  [k] 
worker_thread
+   88.45% 0.07%  kworker/4:2+pm   [kernel.kallsyms]  [k] 
process_one_work
+   88.04% 0.02%  kworker/4:2+pm   [kernel.kallsyms]  [k] 
rpm_idle
+   87.94% 0.03%  kworker/4:2+pm   [kernel.kallsyms]  [k] 
pm_runtime_work
+   87.85% 0.04%  kworker/4:2+pm   [kernel.kallsyms]  [k] 
rpm_suspend
+   87.81% 0.04%  kworker/4:2+pm   [kernel.kallsyms]  [k] 
__rpm_callback
+   87.79% 0.01%  kworker/4:2+pm   [kernel.kallsyms]  [k] 
usb_runtime_idle
+   87.75% 0.01%  kworker/4:2+pm   [kernel.kallsyms]  [k] 
__pm_runtime_suspend
+   87.64% 0.02%  kworker/4:2+pm   [kernel.kallsyms]  [k] 
rpm_callback
+   87.57% 0.03%  kworker/4:2+pm   [kernel.kallsyms]  [k] 
usb_runtime_suspend
+   87.50% 0.03%  kworker/4:2+pm   [kernel.kallsyms]  [k] 
usb_suspend_both
+   85.34% 0.13%  kworker/4:2+pm   [kernel.kallsyms]  [k] 
usb_control_msg
+   84.75% 0.13%  kworker/4:2+pm   [kernel.kallsyms]  [k] 
usb_start_wait_urb
+   82.66% 0.15%  kworker/4:2+pm   [kernel.kallsyms]  [k] 
usb_submit_urb
+   82.42% 0.23%  kworker/4:2+pm   [kernel.kallsyms]  [k] 
usb_hcd_submit_urb
+   79.45%79.23%  kworker/4:2+pm   [kernel.kallsyms]  [k] 
xhci_hub_control
+   75.52% 0.13%  kworker/4:2+pm   [kernel.kallsyms]  [k] 
hub_suspend
+   74.18% 0.03%  kworker/4:2+pm   [kernel.kallsyms]  [k] 
set_port_feature
+   11.83% 0.03%  kworker/4:2+pm   [kernel.kallsyms]  [k] 
usb_resume_interface.isra.12
+   11.82% 0.01%  kworker/4:2+pm   [kernel.kallsyms]  [k] 
hub_resume
+   11.80% 0.14%  kworker/4:2+pm   [kernel.kallsyms]  [k] 
hub_activate
+   11.38% 0.08%  kworker/4:2+pm   [kernel.kallsyms]  [k] 
hub_ext_port_status
+5.78% 0.00%  ksoftirqd/4  [kernel.kallsyms]  [k] 
ret_from_fork
+5.78% 0.00%  ksoftirqd/4  [kernel.kallsyms]  [k] 
kthread
+5.48% 0.35%  ksoftirqd/4  [kernel.kallsyms]  [k] 
smpboot_thread_fn

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Title:
  High CPU usage of kworker/ksoftirqd

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Confirmed

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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2019-02-10 Thread JuanJo Ciarlante 
FYI still happening to me on 18.04 with HWE kernel,
similar behavior as #38: kworker with steady high
cpu usage after un-docking, re-docking didn't solve
it tho.

kernel: 4.18.0-15-generic
hardware: Thinkpad x270, Thinkpad Ultra Dock, network: enp0s31f6 (dock eth) and 
wlp3s0 up

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Title:
  High CPU usage of kworker/ksoftirqd

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Confirmed

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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2018-09-30 Thread danj 
Had similar issue using Ubuntu 18.04 on my Desktop
Upgraded kernel to 4.18.11 - still happens occasionally, usually after screen 
saver 
As soon as I plugged USB devices into all ports the cpu dropped down again

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Title:
  High CPU usage of kworker/ksoftirqd

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Confirmed

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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2018-07-23 Thread AceLan Kao 
** Changed in: linux (Ubuntu)
   Status: In Progress => Confirmed

** Changed in: linux (Ubuntu)
 Assignee: AceLan Kao (acelankao) => (unassigned)

** Changed in: hwe-next
 Assignee: AceLan Kao (acelankao) => (unassigned)

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Title:
  High CPU usage of kworker/ksoftirqd

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Confirmed

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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2017-02-07 Thread Fuujuhi 
For info, I have same symptoms as OP (Aceland Kao) reported (same perf
report), on Ubuntu 16.04 with Kernel 4.4.0-59.80 generic. This is on a
laptop (HP EliteBook G1 480) on a docking station.

I could apparently fix the problem by undocking and docking back the laptop 
while still powered.
Actually the problem appeared while docking the laptop when sleeping, then 
waking up.

To be exact, here the complete sequence I followed:
- Dock the PC, and wake it up.
- Notice the CPU usage, and start 'perf' to debug
- Undock the PC
- Plug many USB devices in all ports. No effect.
- Remove the USB devices.
- Close the lid (for suspend), then open it again. No effect.
- Dock back the PC (when powered up) --> problem when away.

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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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2016-12-18 Thread fabrixx 
Thank you MShepanski (mjs7231). same problem on my new core i7 6700. 
Your fix work on my Debian.

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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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2016-05-11 Thread MShepanski 
I'm hitting this problem on Ubuntu 16.04. Process kworker/0:1 is using
70% of one of my cores.


$ uname -a
Linux pkkid-work 4.4.0-22-generic #39-Ubuntu SMP Thu May 5 16:53:32 UTC 2016 
x86_64 x86_64 x86_64 GNU/Linux


$ lsusb
Bus 002 Device 003: ID 046d:c051 Logitech, Inc. G3 (MX518) Optical Mouse
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 002: ID 046d:c31c Logitech, Inc. Keyboard K120
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub


$ lspci
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor 
DRAM Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor 
PCI Express Root Port (rev 09)
00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family 
USB xHCI Host Controller (rev 04)
00:16.0 Communication controller: Intel Corporation 7 Series/C210 Series 
Chipset Family MEI Controller #1 (rev 04)
00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network 
Connection (rev 04)
00:1a.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family 
USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family 
High Definition Audio Controller (rev 04)
00:1d.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family 
USB Enhanced Host Controller #1 (rev 04)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev a4)
00:1f.0 ISA bridge: Intel Corporation Q77 Express Chipset LPC Controller (rev 
04)
00:1f.2 RAID bus controller: Intel Corporation SATA Controller [RAID mode] (rev 
04)
00:1f.3 SMBus: Intel Corporation 7 Series/C210 Series Chipset Family SMBus 
Controller (rev 04)
01:00.0 VGA compatible controller: NVIDIA Corporation GK107 [GeForce GT 640 
OEM] (rev a1)
01:00.1 Audio device: NVIDIA Corporation GK107 HDMI Audio Controller (rev a1)

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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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2016-04-07 Thread landei16 
Hi all,

yeterday i started my PC with Kernel 4.2.0-34-generic (Ubuntu 14.04.4) running 
on an i3 Skylake Prozessor.
And still kworker /0.1 (PID 50) is consuming ~98% of CPU.

Regards
Landei16

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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.

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Re: [Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2016-03-26 Thread lpuser 
The issue seems to be fixed with the ubuntu 14.04.4 as well (kernel
4.2.0):

$ uname -a
Linux quasar 4.2.0-34-generic #39~14.04.1-Ubuntu SMP Fri Mar 11 11:38:02
UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

2016-02-26 16:41 GMT+02:00 Ekimia :

> Congrats to the Ubuntu team who backport this on 3.19 which enable to
> bring some skylake to Ubuntu computer market.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1488426
>
> Title:
>   High CPU usage of kworker/ksoftirqd
>
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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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2016-02-26 Thread Ekimia 
Congrats to the Ubuntu team who backport this on 3.19 which enable to
bring some skylake to Ubuntu computer market.

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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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2016-02-16 Thread Peter Curtis 
I can also confirm that the 3.19.0.49-generic kernel solves the problem
for me.

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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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2016-02-08 Thread Aditya 
Yes, the issue seems to be fixed for me as well with kernal release
3.19.0-49-generic.

Would still upgrade to 14.04.4 once it releases this week.

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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.

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Re: [Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2016-02-04 Thread lpuser 
The issue seems to be fixed with the latest Ubuntu 14.04.3 kernel:

$ uname -a
Linux quasar 3.19.0-49-generic #55~14.04.1-Ubuntu SMP Fri Jan 22 11:24:31
UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

Can someone double check and confirm?

Thanks!

2016-02-01 0:52 GMT+02:00 DDS <1488...@bugs.launchpad.net>:

> Have this problem  on Dell Inspiron i7559-763BLK. Workaround for me is to
> plug in USB mouse.
> Ubuntu MATE 15.10, Linux 4.2.0-27-generic #32-Ubuntu SMP Fri Jan 22
> 04:49:08 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
>
> --
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>
> Title:
>   High CPU usage of kworker/ksoftirqd
>
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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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2016-01-31 Thread DDS 
Have this problem  on Dell Inspiron i7559-763BLK. Workaround for me is to plug 
in USB mouse.
Ubuntu MATE 15.10, Linux 4.2.0-27-generic #32-Ubuntu SMP Fri Jan 22 04:49:08 
UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

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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.

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Re: [Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2016-01-24 Thread lpuser 
I downloaded the sources for the 3.19.0-43-generic kernel (Ubuntu 14.04.3).
Then I applied this patch:
*http://linux-kernel.2935.n7.nabble.com/TESTPATCH-v2-xhci-fix-usb2-resume-timing-and-races-td1250796.html
*

I haven't experienced any issues so far with the new patched kernel.

Any idea when this patch will hit the official Ubuntu 14.04.3 kernel?

2016-01-23 17:45 GMT+02:00 Ekimia :

> Hi Jerely , 16.04-proposed is still 4.3 and does not fix the problem.
>
>
> As you swaw, Official fix is in 4.4 and 16.04 will includ  4.4, so
> official fix may be only available in april, or canonical should push the
> fix to 4.2 which might be difficult.
>
> --
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>
> Title:
>   High CPU usage of kworker/ksoftirqd
>
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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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2016-01-23 Thread Jeremy LaCroix 
Kernel 4.4 solves the problem for me. I used the kernel from the following site:
http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel-next/2016-01-11-wily/

I hope that this gets fixed in Ubuntu-proper so that I don't need to
rely on a PPA for my system to work properly, though.

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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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2016-01-23 Thread Ekimia 
Hi Jerely , 16.04-proposed is still 4.3 and does not fix the problem.


As you swaw, Official fix is in 4.4 and 16.04 will includ  4.4, so official fix 
may be only available in april, or canonical should push the fix to 4.2 which 
might be difficult.

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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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2016-01-22 Thread Jeremy LaCroix 
HI guys, I'm being bit by this too in Ubuntu 15.10. I have a System76
Lemur (2015, Skylake) and one of my cores is always at 90% or above
usage, unless I plug in a USB device, in which case the problem goes
away.

I tried installing kernel 4.3 from the mainline repo, but with that
kernel, my system won't even boot at all.

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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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2016-01-15 Thread Zupemen 
my laptop's status is still the same
CPU is still at 90% on one core (as seen in system monitor) when it should be 
idle even when i plug in a usb device. The only thing that helps is the webcam 
being active :(
The core that goes up to 90% usage is random, it is not the same one every time 
i login 

flori@flori-Inspiron-:~$ uname -a
Linux flori-Inspiron- 4.2.0-23-generic #28-Ubuntu SMP Sun Dec 27 17:47:31 
UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

flori@flori-Inspiron-:~$ lsusb -t
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
|__ Port 1: Dev 4, If 0, Class=Wireless, Driver=btusb, 12M
|__ Port 1: Dev 4, If 1, Class=Wireless, Driver=btusb, 12M
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
|__ Port 1: Dev 3, If 0, Class=Vendor Specific Class, Driver=rtsx_usb, 
480M
|__ Port 2: Dev 4, If 0, Class=Human Interface Device, Driver=usbhid, 
12M
|__ Port 2: Dev 4, If 1, Class=Human Interface Device, Driver=usbhid, 
12M
|__ Port 2: Dev 4, If 2, Class=Human Interface Device, Driver=usbhid, 
12M
|__ Port 4: Dev 5, If 0, Class=Human Interface Device, Driver=usbhid, 
12M
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 5000M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 480M
|__ Port 2: Dev 2, If 0, Class=Video, Driver=uvcvideo, 480M
|__ Port 2: Dev 2, If 1, Class=Video, Driver=uvcvideo, 480M

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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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2016-01-15 Thread Zupemen 
flori@flori-Inspiron-:~$ cat /proc/6506/status
Name:   kworker/1:0
State:  R (running)
Tgid:   6506
Ngid:   0
Pid:6506
PPid:   2
TracerPid:  0
Uid:0   0   0   0
Gid:0   0   0   0
FDSize: 64
Groups: 
NStgid: 6506
NSpid:  6506
NSpgid: 0
NSsid:  0
Threads:1
SigQ:   0/13422
SigPnd: 
ShdPnd: 
SigBlk: 
SigIgn: 
SigCgt: 
CapInh: 
CapPrm: 003f
CapEff: 003f
CapBnd: 003f
Seccomp:0
Cpus_allowed:   2
Cpus_allowed_list:  1
Mems_allowed:   ,0001
Mems_allowed_list:  0
voluntary_ctxt_switches:5197
nonvoluntary_ctxt_switches: 51522882

i don't know if this helps, i'm just throwing all this here :D

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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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2016-01-11 Thread Ekimia 
Any news on which kernel it might be integrated ?

We really need this for some skylake oem project

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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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2015-12-10 Thread Peter Curtis 
I have tried the test patch provided by Mathias Nyman in http://linux-
kernel.2935.n7.nabble.com/TESTPATCH-v2-xhci-fix-usb2-resume-timing-and-
races-tc1250796.html#a1256745 and rebuilt a Wily 4.2 kernel and that has
prevented High CPU usage of kworker/ksoftirqd under all the
circumstances I have tried. Note this is marked as a TESTPATCH and
Mathias Nyman mentions his intention is to  " do some minor cleanups and
add it to the queue ". At best it will be in the 4.4 kernel and then
available for backports  but it good to know that there is a solution in
hand.

@acelan Is there any way for you to also push the Mathias Nyman patch
into the ubuntu kernel, assuming it also solves your original problem.
Then normal users can just use an updated ubuntu kernel to get rid of
this issue. As it is a timing and race problem it may well turn out to
have  a much wider impact than current reports show, in particular as it
seems to affect Skylake machines.

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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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2015-12-09 Thread Peter Curtis 
@Aditya Thanks for the clarification. I had been trying to find out if
the patch had been merged.

The issue is not however fixed for me with 4.2 nor was it for lpuser in
#8 who tried a number of kernels. However it an improvement as I said in
#17

The following shows the problem first without BT on then with showing
the problem disappearing:

:~$ uname -r
4.2.0-19-generic
pete@Helios-Ubuntu:~$ top

in,  2 users,  load average: 0.71, 0.28, 0.11
Tasks: 238 total,   2 running, 236 sleeping,   0 stopped,   0 zombie
%Cpu(s):  0.8 us, 25.0 sy,  0.0 ni, 73.8 id,  0.0 wa,  0.0 hi,  0.4 si,  0.0 st
KiB Mem:   8082944 total,  1196884 used,  6886060 free,61504 buffers
KiB Swap: 10239996 total,0 used, 10239996 free.   542960 cached Mem

  PID USER  PR  NIVIRTRESSHR S  %CPU %MEM TIME+ COMMAND 
   50 root  20   0   0  0  0 R  71.2  0.0   0:15.14 kworker/0:1 
3 root  20   0   0  0  0 S  28.9  0.0   0:11.58 ksoftirqd/0 
  729 root  20   0  294360  11812   7432 S   1.7  0.1   0:08.33 polkitd 
 1182 pete  20   0 1451368 183784  60088 S   1.7  2.3   0:25.51 cinnamon
  145 root  20   0   0  0  0 S   0.3  0.0   0:00.10 kworker/u8+ 
  638 root  20   0  462888  19056  13656 S   0.3  0.2   0:03.32 NetworkMan+ 
  644 message+  20   0   44192   5004   3480 S   0.3  0.1   0:03.83 dbus-daemon 
  796 root  20   0  405348  86652  76272 S   0.3  1.1   0:07.15 Xorg
1 root  20   0   37748   5784   3892 S   0.0  0.1   0:01.13 systemd 
2 root  20   0   0  0  0 S   0.0  0.0   0:00.00 kthreadd
4 root  20   0   0  0  0 S   0.0  0.0   0:13.54 kworker/0:0 
5 root   0 -20   0  0  0 S   0.0  0.0   0:00.00 kworker/0:+ 
6 root  20   0   0  0  0 S   0.0  0.0   0:00.03 kworker/u8+ 
7 root  20   0   0  0  0 S   0.0  0.0   0:00.39 rcu_sched   
8 root  20   0   0  0  0 S   0.0  0.0   0:00.00 rcu_bh  
9 root  20   0   0  0  0 S   0.0  0.0   0:00.35 rcuos/0 
   10 root  20   0   0  0  0 S   0.0  0.0   0:00.00 rcuob/0 
pete@Helios-Ubuntu:~$ lsusb -t
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 5000M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/12p, 480M
|__ Port 4: Dev 3, If 0, Class=Video, Driver=uvcvideo, 480M
|__ Port 4: Dev 3, If 1, Class=Video, Driver=uvcvideo, 480M

=== Now Switch on Bluetooth ==
~$ lsusb -t
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 5000M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/12p, 480M
|__ Port 3: Dev 4, If 0, Class=Wireless, Driver=btusb, 12M
|__ Port 3: Dev 4, If 1, Class=Wireless, Driver=btusb, 12M
|__ Port 4: Dev 3, If 0, Class=Video, Driver=uvcvideo, 480M
|__ Port 4: Dev 3, If 1, Class=Video, Driver=uvcvideo, 480M
$ top

top - 09:21:47 up 9 min,  2 users,  load average: 0.79, 0.69, 0.32
Tasks: 246 total,   1 running, 245 sleeping,   0 stopped,   0 zombie
%Cpu(s):  2.1 us,  0.3 sy,  0.0 ni, 97.6 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem:   8082944 total,  1289152 used,  6793792 free,74748 buffers
KiB Swap: 10239996 total,0 used, 10239996 free.   569360 cached Mem

  PID USER  PR  NIVIRTRESSHR S  %CPU %MEM TIME+ COMMAND 
 1182 pete  20   0 1453084 185460  60264 S   4.0  2.3   0:34.76 cinnamon
  729 root  20   0  294756  12112   7432 S   2.6  0.1   0:11.52 polkitd 
  638 root  20   0  462888  17052  13676 S   1.0  0.2   0:04.52 NetworkMan+ 
  644 message+  20   0   44192   5080   3480 S   1.0  0.1   0:05.15 dbus-daemon 
 2150 pete  20   0   29220   3172   2592 R   0.7  0.0   0:00.06 top 
  796 root  20   0  405400  87404  77020 S   0.3  1.1   0:09.59 Xorg
1 root  20   0  119676   5812   3892 S   0.0  0.1   0:01.15 systemd 
2 root  20   0   0  0  0 S   0.0  0.0   0:00.00 kthreadd
3 root  20   0   0  0  0 S   0.0  0.0   1:03.84 ksoftirqd/0 
4 root  20   0   0  0  0 S   0.0  0.0   1:16.92 kworker/0:0 
5 root   0 -20   0  0  0 S   0.0  0.0   0:00.00 kworker/0:+ 
6 root  20   0   0  0  0 S   0.0  0.0   0:00.03 kworker/u8+ 
7 root  20   0   0  0  0 S   0.0  0.0   0:00.50 rcu_sched   
8 root  20   0   0  0  0 S   0.0  0.0   0:00.00 rcu_bh  
9 root  20   0   0  0  0 S   0.0  0.0   0:00.39 rcuos/0 
   10 root  20   0   0  0  0 S   0.0  0.0   0:00.00 rcuob/0 

I hope a solution to my problem has been found at http://linux-
kernel.2935.n7.nabble.com/TESTPATCH-v2-xhci-fix-usb2-resume-timing-and-
races-tc1250796.html#a1256745

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2015-12-08 Thread Aditya 
The above working patch has been merged in linux-4.1.y branch of linux-
stable repository as can been seen here:
https://git.kernel.org/cgit/linux/kernel/git/stable/linux-
stable.git/log/?qt=grep=mmc%3A+core%3A+Enable+runtime+PM+management+of+host+devices=linux-4.1.y

Since Ubuntu 15.10 comes with Kernel version 4.2, I guess using Ubuntu
15.10 would fix the issue. I would wait for 14.04.4 to come out in Feb
2016 with updated kernel as depicted here:
https://wiki.ubuntu.com/Kernel/LTSEnablementStack#Kernel.2BAC8-Support.A14.04.x_Ubuntu_Kernel_Support

And then upgrade to Ubuntu 16.04 LTS.

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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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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2015-12-07 Thread Peter Curtis 
I have carried out some more comprehensive tests using the kernel in #4 over 
the weekend and found it does improve my situation far more than my initial 
quick test showed. Most of the rather bizarre behaviour has gone include the 
changes with power from battery to external and the importance of suspending. 
Once kworker spinning has started it can now be _predictably_ stopped when 
using your kernel by:
Any USB 2 device being plugged into any USB port or a USB 3 device plugged 
into the USB 2 port
The internal Bluetooth being turned on so that it shows up as USB device
The internal Web cam being used (by cheese during my test). 
Note running the web cam does not change what is shown by lsusb -t, everything 
else which stops spinning shows as a new device being connected in dmesg and 
appears in lsusb.
Although the kernel in #4 does not completely solve the problem it is obviously 
addresses the correct area and in my case makes the machine usable without 
having anything plugged into a usb port, keeping bluetooth on is sufficient. 

@AceLan What is the status of the patch and other work on the issue? Is
there anything else I can do to progress the work?

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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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2015-12-02 Thread Peter Curtis 
I also have a similar problem which does Not seem to be solved by the
patched kernel although the perf report looks very similar and plugging
in a USB device clears the problem. The starting and inhibiting of the
kworker spinning is very specific and rather bizare on my new Skylake
machine running Linux Mint 17.3 beta (Cinnamon 2.8 desktop) with kernels
between 3.19 and 4.2 during test.

It only starts when external power is off and the machine is suspended/resumed 
- I have not so far been able to provoke it any other way.
If power is restored excess usage stops but restarts if power unplugged.
If power is on and a suspend/resume cycle is carried out external power can be 
unplugged without the excess usage.
Any USB 2 device stops the excess usage when plugged into the USB2 port 
including USB3 devices.
USB 3 devices plugged into a USB3 port do not stop the power usage.
Turning on the webcam stops the usage as long as it is on - the webcam is on 
the usb2 hub
Turning Bluetooth off and on with the function key stops the high usage as long 
as it still remains on. Software disabling and enabling does not work. When 
bluetooth switched by function key it disappears/appears in lsusb under the USB 
2 hub

In other words everything seems to point to the USB 2 system. 
perf report
+   68.46% 0.00%  kworker/0:3  [kernel.kallsyms] [k] 
ret_from_fork ▒
+   68.46% 0.00%  kworker/0:3  [kernel.kallsyms] [k] 
kthread   ▒
+   68.46% 0.00%  kworker/0:3  [kernel.kallsyms] [k] 
worker_thread ▒
+   68.43% 0.02%  kworker/0:3  [kernel.kallsyms] [k] 
process_one_work  ▒
+   67.44% 0.07%  kworker/0:3  [kernel.kallsyms] [k] 
rpm_idle  ▒
+   66.89% 0.07%  kworker/0:3  [kernel.kallsyms] [k] 
rpm_suspend   ▒
+   66.84% 0.02%  kworker/0:3  [kernel.kallsyms] [k] 
pm_runtime_work   ▒
+   66.47% 0.00%  kworker/0:3  [kernel.kallsyms] [k] 
usb_runtime_idle  ▒
+   66.47% 0.00%  kworker/0:3  [kernel.kallsyms] [k] 
__rpm_callback▒
+   66.44% 0.00%  kworker/0:3  [kernel.kallsyms] [k] 
__pm_runtime_suspend  ▒
+   66.23% 0.02%  kworker/0:3  [kernel.kallsyms] [k] 
rpm_callback  ▒
+   66.21% 0.02%  kworker/0:3  [kernel.kallsyms] [k] 
usb_runtime_suspend   ▒
+   66.11% 0.02%  kworker/0:3  [kernel.kallsyms] [k] 
usb_suspend_both  ▒
+   64.11% 0.02%  kworker/0:3  [kernel.kallsyms] [k] 
hub_resume▒
+   64.11% 0.02%  kworker/0:3  [kernel.kallsyms] [k] 
usb_resume_interface.isra.6   ▒
+   64.04% 0.52%  kworker/0:3  [kernel.kallsyms] [k] 
hub_activate  ▒
+   62.49% 0.24%  kworker/0:3  [kernel.kallsyms] [k] 
hub_port_status   ▒
+   62.02% 0.21%  kworker/0:3  [kernel.kallsyms] [k] 
usb_control_msg   ▒
+   59.15% 0.26%  kworker/0:3  [kernel.kallsyms] [k] 
usb_start_wait_urb▒
+   53.26% 0.05%  kworker/0:3  [kernel.kallsyms] [k] 
usb_submit_urb▒
+   53.26% 0.64%  kworker/0:3  [kernel.kallsyms] [k] 
usb_submit_urb.part.6 ▒
+   50.96% 1.70%  kworker/0:3  [kernel.kallsyms] [k] 
usb_hcd_submit_urb▒
+   36.85%36.23%  kworker/0:3  [kernel.kallsyms] [k] 
xhci_hub_control  ▒
+   17.07% 0.00%  ksoftirqd/0  [kernel.kallsyms] [k] 
ret_from_fork ▒
+   17.07% 0.00%  ksoftirqd/0  [kernel.kallsyms] [k] 
kthread   ▒
+   16.65% 1.33%  ksoftirqd/0  [kernel.kallsyms] [k] 
smpboot_thread_fn ▒
+9.88% 0.69%  kworker/0:3  [kernel.kallsyms] [k] 
usb_hcd_giveback_urb  ▒
+8.22% 0.83%  kworker/0:3  [kernel.kallsyms] [k] 
__tasklet_schedule  


lspci and lsusb
@Helios:~$ lspci
00:00.0 Host bridge: Intel Corporation Sky Lake Host Bridge/DRAM Registers (rev 
08)
00:02.0 VGA compatible controller: Intel Corporation Sky Lake Integrated 
Graphics (rev 07)
00:14.0 USB controller: Intel Corporation Device 9d2f (rev 21)
00:14.2 Signal processing controller: Intel Corporation Device 9d31 (rev 21)
00:16.0 Communication controller: Intel Corporation Device 9d3a (rev 21)
00:17.0 SATA controller: Intel Corporation Device 9d03 (rev 21)
00:1c.0 PCI bridge: Intel Corporation Device 9d14 (rev f1)
00:1f.0 ISA bridge: Intel Corporation Device 9d48 (rev 21)
00:1f.2 Memory controller: Intel Corporation Device 9d21 (rev 21)
00:1f.3 Audio device: Intel

[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2015-12-01 Thread Aditya 
Hi AceLan,

Thanks for your efforts. Here is the result of the running the command
`lspci`:

$ lspci
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 1422
00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] 
Kaveri [Radeon R7 200 Series]
00:01.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Device 1308
00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 1424
00:03.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 1424
00:03.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 1426
00:04.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 1424
00:10.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI 
Controller (rev 09)
00:10.1 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI 
Controller (rev 09)
00:11.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller 
[AHCI mode] (rev 40)
00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI 
Controller (rev 11)
00:12.2 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI 
Controller (rev 11)
00:13.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI 
Controller (rev 11)
00:13.2 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI 
Controller (rev 11)
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 16)
00:14.2 Audio device: Advanced Micro Devices, Inc. [AMD] FCH Azalia Controller 
(rev 01)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 11)
00:14.4 PCI bridge: Advanced Micro Devices, Inc. [AMD] FCH PCI Bridge (rev 40)
00:14.5 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI 
Controller (rev 11)
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 141a
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 141b
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 141c
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 141d
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 141e
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 141f
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 
PCI Express Gigabit Ethernet Controller (rev 0c)


I would be happy to help you troubleshoot the problem. Let me know whatever 
info you require.

Regards,

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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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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2015-11-30 Thread AceLan Kao 
Aditya, could you post the result of the command 'lspci' here, so that I can 
identify which platform you are using.
I submitted the patch for SRU couple months ago, but been asked to test the 
patch on more machines.
So, I need your feedback to push the patch into ubuntu kernel, so that you can 
use the updated ubuntu kernel and get rid of this issue.

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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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2015-11-30 Thread Aditya 
Hi AceLan,

I am also affected by this issue and using the patched kernel available
at http://people.canonical.com/~acelan/lp1475248/ solved the issue for
me.

Now the update manager gives me an upgrade for the three linux packages.
Can I install them? Please guide me how do I remain updated with latest
security fixes while still having the patch applied to the kernel?

I have installed 14.04.3 (with vivid HWE).

Regards,
Aditya

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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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2015-11-16 Thread AceLan Kao 
Hi,

Could you give me an ack or nack that the kernel on comment #4 works or not?
Thanks.

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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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2015-11-08 Thread Zupemen 
hy i am having the same problem on my del inspiron  
-- my top listing shows this 
  PID USER  PR  NIVIRTRESSHR 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 45636   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
  16:104117191146   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  0795   PCI-MSI-edge  eth0
  37:   8895  10818  13275  52909   PCI-MSI-edge  
: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-APIC8-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:2778075132605813328511598522   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:1198530239741618318701788606   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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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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2015-09-14 Thread lpuser 
Your hunch was correct.
I plugged in USB devices in all USB ports and the issue went away.
Then I started to unplug them one by one and I noticed that the problem is 
related only to one of the 3 external USB ports.
As soon as I unplug the device from that USB port kworker and ksoftirqd will 
instantly start to abuse the CPU.

USB devices:

$ lsusb
Bus 004 Device 006: ID 0cf3:e005 Atheros Communications, Inc. 
Bus 004 Device 002: ID 0438:7900 Advanced Micro Devices, Inc. 
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 004: ID 06cb:75bf Synaptics, Inc. 
Bus 003 Device 003: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card 
Reader Controller
Bus 003 Device 002: ID 0438:7900 Advanced Micro Devices, Inc. 
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 0bda:5684 Realtek Semiconductor Corp. 
Bus 001 Device 008: ID 0458:003a KYE Systems Corp. (Mouse Systems) NetScroll+ 
Mini Traveler / Genius NetScroll 120  <== I connected a mouse to the USB port 
that I mentioned earlier
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

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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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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2015-09-13 Thread lpuser 
I'm also affected by this issue and it's very annoying as it sucks all my 
battery!
I have a Dell Inspiron  powered by an AMD A8-7410 and 4G of RAM (which is 
BTW certified for Ubuntu 14.04).


Here's the top output:

$ top -b -n1
top - 11:20:15 up 42 min,  2 users,  load average: 1,77, 1,72, 1,62
Tasks: 217 total,   2 running, 215 sleeping,   0 stopped,   0 zombie
%Cpu(s):  3,9 us, 22,2 sy,  0,0 ni, 70,5 id,  1,5 wa,  0,0 hi,  1,9 si,  0,0 st
KiB Mem:   3400808 total,  1822148 used,  1578660 free,64956 buffers
KiB Swap:  7812092 total,0 used,  7812092 free.   764228 cached Mem

  PID USER  PR  NIVIRTRESSHRS%CPU%MEM TIME+ 
COMMAND
   75 root 20   0   0   0 0R  56,7  
0,022:56.39  kworker/3:2
   29 root 20   0   0   0 0S  37,8  
0,016:05.42  ksoftirqd/3


And this is the perf report:

+   65,62% 0,00%  kworker/3:2  [kernel.kallsyms] [k] 
ret_from_fork ▒
+   65,62% 0,00%  kworker/3:2  [kernel.kallsyms] [k] 
kthread   ▒
+   65,51% 0,11%  kworker/3:2  [kernel.kallsyms] [k] 
worker_thread ▒
+   65,26% 0,67%  kworker/3:2  [kernel.kallsyms] [k] 
process_one_work  ▒
+   61,64% 0,78%  kworker/3:2  [kernel.kallsyms] [k] 
rpm_idle  ▒
+   60,01% 0,32%  kworker/3:2  [kernel.kallsyms] [k] 
pm_runtime_work   ▒
+   59,27% 0,99%  kworker/3:2  [kernel.kallsyms] [k] 
rpm_suspend   ▒
+   58,95% 0,14%  kworker/3:2  [kernel.kallsyms] [k] 
__rpm_callback▒
+   58,76% 0,22%  kworker/3:2  [kernel.kallsyms] [k] 
usb_runtime_idle  ▒
+   58,37% 0,24%  kworker/3:2  [kernel.kallsyms] [k] 
__pm_runtime_suspend  ▒
+   56,79% 0,24%  kworker/3:2  [kernel.kallsyms] [k] 
rpm_callback  ▒
+   56,41% 0,25%  kworker/3:2  [kernel.kallsyms] [k] 
usb_runtime_suspend   ▒
+   56,11% 0,75%  kworker/3:2  [kernel.kallsyms] [k] 
usb_suspend_both  ▒
+   42,00% 0,36%  kworker/3:2  [kernel.kallsyms] [k] 
usb_resume_interface.isra.6   ▒
+   41,69% 0,24%  kworker/3:2  [kernel.kallsyms] [k] 
hub_resume▒
+   41,30% 0,81%  kworker/3:2  [kernel.kallsyms] [k] 
hub_activate  ▒
+   37,38% 0,66%  kworker/3:2  [kernel.kallsyms] [k] 
hub_port_status   ▒
+   36,29% 0,49%  kworker/3:2  [kernel.kallsyms] [k] 
usb_control_msg   ▒
+   33,50% 0,50%  kworker/3:2  [kernel.kallsyms] [k] 
usb_start_wait_urb▒
+   26,53% 0,43%  kworker/3:2  [kernel.kallsyms] [k] 
usb_submit_urb▒
+   26,08% 2,32%  kworker/3:2  [kernel.kallsyms] [k] 
usb_submit_urb.part.6 ▒
+   22,69% 1,63%  kworker/3:2  [kernel.kallsyms] [k] 
usb_hcd_submit_urb▒
+   19,59% 0,00%  ksoftirqd/3  [kernel.kallsyms] [k] 
ret_from_fork ▒
+   19,59% 0,00%  ksoftirqd/3  [kernel.kallsyms] [k] 
kthread   ▒
+   18,21% 1,18%  ksoftirqd/3  [kernel.kallsyms] [k] 
smpboot_thread_fn ▒
+   15,07% 0,52%  kworker/3:2  [kernel.kallsyms] [k] 
usb_hcd_giveback_urb  ▒
+   14,08% 0,21%  kworker/3:2  [kernel.kallsyms] [k] 
wakeup_softirqd   ▒
+   13,67% 0,05%  kworker/3:2  [kernel.kallsyms] [k]

[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2015-09-13 Thread lpuser 
One more thing that it's worth mentioning.
My Dell laptop came with ubuntu 14.04 preinstalled.
I tried to install all the updates (around 600MB of packages), had some issues 
and decided to download and install the latest LTS image (14.04.3).
What I'm trying to say is that I only noticed this bug after I reinstalled 
Ubuntu so I'm not sure if it also affected the Dell preinstalled Ubuntu image 
which might have had some additional proprietary divers included.
At this point I'm unable to reinstall the Dell stock Ubuntu image because I 
didn't create a recovery disk.

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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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2015-09-13 Thread lpuser 
As said before I'm willing to help with debugging and testing.
If someone knows how to debug this please let me know.

On my laptop I can easily reproduce it by following these steps:
- install chromium browser:
$ sudo apt-get install chromium-browser
- install the Adobe flash plugin (you might need to enable the Canonical 
Partners repo)
$ sudo apt-get install adobe-flashplugin
- open Chromium browser and go to youtube or any other website with flash videos

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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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2015-09-13 Thread lpuser 
Also tested and reproduced the bug with the following kernels:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.3-rc1-unstable/
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.2-unstable/
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.1.6-unstable/
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.0.9-wily/
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.19.8-vivid/

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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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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2015-09-13 Thread AceLan Kao 
lpuser, 
I don't think you have the same symptom as mine. The symptom is that just boot 
up the machine and observe the cpu loading from 'top'. I don't need to do 
anything or open any apps to encounter this issue.

But your perf report is very similar to mine, you can try to plug USB
devices in all USB ports on your machine and see if it helps.

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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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2015-09-01 Thread Keng-Yu Lin 
** Changed in: hwe-next
 Assignee: (unassigned) => AceLan Kao (acelankao)

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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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2015-08-31 Thread AceLan Kao 
Here is the kernel with the patches
http://people.canonical.com/~acelan/lp1475248/

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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.

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2015-08-25 Thread AceLan Kao 
perf report:

+ 73.46% 0.00% kworker/2:0 [kernel.kallsyms] [k] ret_from_fork
+ 73.46% 0.00% kworker/2:0 [kernel.kallsyms] [k] kthread
+ 73.46% 0.00% kworker/2:0 [kernel.kallsyms] [k] worker_thread
+ 73.35% 0.10% kworker/2:0 [kernel.kallsyms] [k] process_one_work
+ 72.13% 0.07% kworker/2:0 [kernel.kallsyms] [k] rpm_idle
+ 71.68% 0.09% kworker/2:0 [kernel.kallsyms] [k] rpm_suspend
+ 71.52% 0.02% kworker/2:0 [kernel.kallsyms] [k] pm_runtime_work
+ 71.30% 0.06% kworker/2:0 [kernel.kallsyms] [k] __rpm_callback
+ 71.26% 0.00% kworker/2:0 [kernel.kallsyms] [k] usb_runtime_idle
+ 71.23% 0.02% kworker/2:0 [kernel.kallsyms] [k] __pm_runtime_suspend
+ 70.96% 0.00% kworker/2:0 [kernel.kallsyms] [k] rpm_callback
+ 70.91% 0.01% kworker/2:0 [kernel.kallsyms] [k] usb_runtime_suspend
+ 70.86% 0.04% kworker/2:0 [kernel.kallsyms] [k] usb_suspend_both
+ 68.64% 0.01% kworker/2:0 [kernel.kallsyms] [k] usb_resume_interface.isra.6
+ 68.63% 0.02% kworker/2:0 [kernel.kallsyms] [k] hub_resume
+ 68.59% 0.44% kworker/2:0 [kernel.kallsyms] [k] hub_activate
+ 67.22% 0.28% kworker/2:0 [kernel.kallsyms] [k] hub_port_status
+ 66.42% 0.32% kworker/2:0 [kernel.kallsyms] [k] usb_control_msg
+ 63.88% 0.24% kworker/2:0 [kernel.kallsyms] [k] usb_start_wait_urb
+ 58.25% 0.08% kworker/2:0 [kernel.kallsyms] [k] usb_submit_urb
+ 58.14% 0.44% kworker/2:0 [kernel.kallsyms] [k] usb_submit_urb.part.6
+ 56.05% 1.75% kworker/2:0 [kernel.kallsyms] [k] usb_hcd_submit_urb
+ 43.00% 42.17% kworker/2:0 [kernel.kallsyms] [k] xhci_hub_control
+ 15.27% 0.00% ksoftirqd/2 [kernel.kallsyms] [k] ret_from_fork
+ 15.27% 0.00% ksoftirqd/2 [kernel.kallsyms] [k] kthread
+ 14.88% 0.95% ksoftirqd/2 [kernel.kallsyms] [k] smpboot_thread_fn
+ 8.78% 0.54% kworker/2:0 [kernel.kallsyms] [k] usb_hcd_giveback_urb
+ 7.35% 0.78% kworker/2:0 [kernel.kallsyms] [k] __tasklet_schedule
+ 7.19% 0.05% kworker/2:0 [kernel.kallsyms] [k] wakeup_softirqd
+ 7.16% 0.14% kworker/2:0 [kernel.kallsyms] [k] wake_up_process
+ 7.00% 0.12% ksoftirqd/2 [kernel.kallsyms] [k] run_ksoftirqd
+ 6.91% 0.11% ksoftirqd/2 [kernel.kallsyms] [k] schedule
+ 6.69% 0.76% ksoftirqd/2 [kernel.kallsyms] [k] __do_softirq
+ 6.56% 1.33% ksoftirqd/2 [kernel.kallsyms] [k] __schedule
+ 6.47% 0.49% kworker/2:0 [kernel.kallsyms] [k] try_to_wake_up
+ 5.37% 5.37% kworker/2:0 [kernel.kallsyms] [k] __switch_to
+ 5.30% 0.91% ksoftirqd/2 [kernel.kallsyms] [k] tasklet_action
+ 5.15% 5.15% ksoftirqd/2 [kernel.kallsyms] [k] __switch_to
+ 5.09% 0.11% kworker/2:0 [kernel.kallsyms] [k] ttwu_do_activate.constprop.94
+ 5.04% 0.28% kworker/2:0 [kernel.kallsyms] [k] _cond_resched
+ 4.83% 0.34% kworker/2:0 [kernel.kallsyms] [k] wait_for_completion_timeout
+ 4.70% 1.68% kworker/2:0 [kernel.kallsyms] [k] __schedule

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https://bugs.launchpad.net/bugs/1488426

Title:
  High CPU usage of kworker/ksoftirqd

Status in linux package in Ubuntu:
  In Progress

Bug description:
  kworker consuming 71.5% cpu resource
  ksoftirqd consuming 28.9% cpu resource

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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2015-08-25 Thread AceLan Kao 
Tasks: 128 total, 2 running, 126 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.0 us, 24.6 sy, 0.0 ni, 75.0 id, 0.0 wa, 0.0 hi, 0.4 si, 0.0 st
KiB Mem: 16324316 total, 405308 used, 15919008 free, 46152 buffers
KiB Swap: 32855036 total, 0 used, 32855036 free. 220780 cached Mem

  PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
   23 root 20 0 0 0 0 R 71.6 0.0 17:30.13 kworker/2:0
   22 root 20 0 0 0 0 S 28.6 0.0 7:00.61 ksoftirqd/2

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https://bugs.launchpad.net/bugs/1488426

Title:
  High CPU usage of kworker/ksoftirqd

Status in linux package in Ubuntu:
  In Progress

Bug description:
  kworker consuming 71.5% cpu resource
  ksoftirqd consuming 28.9% cpu resource

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1488426] Re: High CPU usage of kworker/ksoftirqd

2015-08-25 Thread AceLan Kao 
The commit fixes the issue

commit 9250aea76bfcbf4c2a7868e5566281bf2bb7af27
Author: Ulf Hansson ulf.hans...@linaro.org
Date: Fri Mar 27 12:15:15 2015 +0100

mmc: core: Enable runtime PM management of host devices

Currently those host drivers which have deployed runtime PM, deals with
the runtime PM reference counting entirely by themselves.

Since host drivers don't know when the core will send the next request
through some of the host_ops callbacks, they need to handle runtime PM
get/put between each an every request.

In quite many cases this has some negative effects, since it leads to a
high frequency of scheduled runtime PM suspend operations. That due to
the runtime PM reference count will normally reach zero in-between
every request.

We can decrease that frequency, by enabling the core to deal with
runtime PM reference counting of the host device. Since the core often
knows that it will send a seqeunce of requests, it makes sense for it
to keep a runtime PM reference count during these periods.

More exactly, let's increase the runtime PM reference count by invoking
pm_runtime_get_sync() from __mmc_claim_host(). Restore that action by
invoking pm_runtime_mark_last_busy() and pm_runtime_put_autosuspend()
in mmc_release_host(). In this way a runtime PM reference count will be
kept during the complete cycle of a claim - release host.

Signed-off-by: Ulf Hansson ulf.hans...@linaro.org
Acked-by: Adrian Hunter adrian.hun...@intel.com
Acked-by: Konstantin Dorfman kdorf...@codeaurora.org

** Description changed:

  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.

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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1488426

Title:
  High CPU usage of kworker/ksoftirqd

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:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1488426/+subscriptions

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