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

** Changed in: hwe-next Status: New => Invalid -- 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 HWE Next: Invalid

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

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. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.

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

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

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

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

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

** Tags added: cscc -- 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 HWE Next: New Status in linux package in Ubuntu:

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

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:

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

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. -- 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

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

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) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.

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

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 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.

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

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',

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

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 -- You received

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

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 -- You received this bug notification because you are a member of Kernel Packages,

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

** 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) -- You received this bug notification because you are a member

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

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.

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

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

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

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

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

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 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed

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

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

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

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 a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1488426 Title: High

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

I can also confirm that the 3.19.0.49-generic kernel solves the problem for me. -- 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

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

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. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.

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

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

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

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 -- You received this bug notification because you are a member of Kernel Packages,

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

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

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

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. -- You

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

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. -- You received this bug notification

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

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

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

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

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

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:

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

Any news on which kernel it might be integrated ? We really need this for some skylake oem project -- 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

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

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

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

@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

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

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

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

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

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

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

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:

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

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

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

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

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

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

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

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

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

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

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

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,

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

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

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

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

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

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/

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

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

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

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

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

Here is the kernel with the patches http://people.canonical.com/~acelan/lp1475248/ -- 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

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

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

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

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

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