Ubuntu
linux package

kworker takes a lot of CPU

Bug #1861419 reported by corrado venturini
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Confirmed
Undecided
Unassigned

Bug Description

kworker takes a lot of CPU. no other app are active.

top - 15:52:50 up 8 min, 1 user, load average: 1,16, 1,24, 0,77
Tasks: 204 total, 2 running, 202 sleeping, 0 stopped, 0 zombie
%Cpu(s): 4,9 us, 26,2 sy, 0,0 ni, 62,3 id, 0,0 wa, 0,0 hi, 6,6 si, 0,0 st
MiB Mem : 3867,1 total, 1737,2 free, 895,9 used, 1234,0 buff/cache
MiB Swap: 4096,0 total, 4096,0 free, 0,0 used. 2568,5 avail Mem

  PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
  239 root 20 0 0 0 0 R 81,2 0,0 0:31.92 kworker/0+
 1623 corrado 20 0 304848 53436 38048 S 6,2 1,3 0:13.02 Xorg
 1921 corrado 20 0 323484 10544 8768 S 6,2 0,3 0:00.42 ibus-daem+
    1 root 20 0 167140 10868 7952 S 0,0 0,3 0:02.04 systemd

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: linux-image-5.3.0-29-generic 5.3.0-29.31
ProcVersionSignature: Ubuntu 5.3.0-29.31-generic 5.3.13
Uname: Linux 5.3.0-29-generic x86_64
ApportVersion: 2.20.11-0ubuntu8.2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: corrado 1613 F.... pulseaudio
 /dev/snd/controlC1: corrado 1613 F.... pulseaudio
Date: Thu Jan 30 15:49:01 2020
InstallationDate: Installed on 2019-12-28 (33 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
MachineType: Hewlett-Packard HP 250 G3 Notebook PC
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-29-generic root=UUID=24e2ba6f-1b75-4b3c-835e-63387635551b ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-5.3.0-29-generic N/A
 linux-backports-modules-5.3.0-29-generic N/A
 linux-firmware 1.183.3
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/18/2014
dmi.bios.vendor: Insyde
dmi.bios.version: F.36
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: 2211
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 86.49
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnInsyde:bvrF.36:bd12/18/2014:svnHewlett-Packard:pnHP250G3NotebookPC:pvr0991100000000000000600087:rvnHewlett-Packard:rn2211:rvr86.49:cvnHewlett-Packard:ct10:cvrChassisVersion:
dmi.product.family: 103C_5336AN G=N L=CON B=HP S=PAV
dmi.product.name: HP 250 G3 Notebook PC
dmi.product.sku: J4R70EA#ABZ
dmi.product.version: 0991100000000000000600087
dmi.sys.vendor: Hewlett-Packard

Revision history for this message
corrado venturini (corradoventu) wrote :
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote : Status changed to Confirmed

This change was made by a bot.

Changed in linux (Ubuntu):
status: New → Confirmed
Revision history for this message
corrado venturini (corradoventu) wrote :

same problem on same hardware with Ubuntu 20.04 alpha
corrado@corrado-HP-p4-ff--0124:~$ inxi -SMCx
System: Host: corrado-HP-p4-ff--0124 Kernel: 5.4.0-12-generic x86_64 bits: 64 compiler: gcc
           v: 9.2.1 Desktop: Gnome 3.34.3 Distro: Ubuntu 20.04 LTS (Focal Fossa)
Machine: Type: Laptop System: Hewlett-Packard product: HP 250 G3 Notebook PC
           v: 0991100000000000000600087 serial: <root required>
           Mobo: Hewlett-Packard model: 2211 v: 86.49 serial: <root required> UEFI: Insyde
           v: F.36 date: 12/18/2014
CPU: Topology: Dual Core model: Intel Core i5-4210U bits: 64 type: MT MCP arch: Haswell
           rev: 1 L2 cache: 3072 KiB
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 19156
           Speed: 2689 MHz min/max: 800/2700 MHz Core speeds (MHz): 1: 2687 2: 2689 3: 2395
           4: 2396
corrado@corrado-HP-p4-ff--0124:~$

Revision history for this message
corrado venturini (corradoventu) wrote :

found same problem on
DistroRelease: Ubuntu 19.10
Package: linux-image-5.3.0-29-generic 5.3.0-29.31
ProcVersionSignature: Ubuntu 5.3.0-29.31-generic 5.3.13
Uname: Linux 5.3.0-29-generic x86_64
and
Linux corrado-HP-p4-ff--0124 5.4.0-12-generic #15-Ubuntu SMP Tue Jan 21 15:12:29 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1861419

Revision history for this message
corrado venturini (corradoventu) wrote :

The problem started after inserting an SSD in place of the DVD burner.
Removed the SSD the problem disappeared

Revision history for this message
corrado venturini (corradoventu) wrote :
Download full text (10.1 KiB)

I see a lot of acpi interrupts from gpe03:
corrado@corrado-HP-p4-ff--0124:~$ grep . -r /sys/firmware/acpi/interrupts/
/sys/firmware/acpi/interrupts/gpe2F: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe23: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe5D: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe51: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe1F: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe13: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe4D: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe41: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe7B: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe0F: 0 EN enabled unmasked
/sys/firmware/acpi/interrupts/gpe03: 6670888 STS enabled unmasked
/sys/firmware/acpi/interrupts/gpe3D: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe31: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe6B: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe2D: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe21: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe5B: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe1D: 0 invalid unmasked
/sys/firmware/acpi/interrupts/ff_pwr_btn: 0 EN enabled unmasked
/sys/firmware/acpi/interrupts/gpe78: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe11: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe4B: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe0D: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe68: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe01: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe3B: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe58: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe2B: 0 invalid unmasked
/sys/firmware/acpi/interrupts/ff_rt_clk: 0 disabled unmasked
/sys/firmware/acpi/interrupts/ff_pmtimer: 0 STS invalid unmasked
/sys/firmware/acpi/interrupts/gpe48: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe1B: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe76: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe38: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe0B: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe66: 5 EN enabled unmasked
/sys/firmware/acpi/interrupts/gpe28: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe56: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe18: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe46: 0 invalid unmasked
/sys/firmware/acpi/interrupts/gpe74: 0 invalid un...

Revision history for this message
corrado venturini (corradoventu) wrote :

Problem TEMPORARILY solved disabling gpe03 with
 echo "disable" > /sys/firmware/acpi/interrupts/gpe03
but problem reappears at each boot

Revision history for this message
corrado venturini (corradoventu) wrote :

same problem in Ubuntu 23.10 live session
same workaround with: echo "disable" > /sys/firmware/acpi/interrupts/gpe03

Revision history for this message
Ubuntu QA Website (ubuntuqa) wrote :

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
https://iso.qa.ubuntu.com/qatracker/reports/bugs/1861419

tags: added: iso-testing
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