Public bug reported:
I'm running AWS EC2 t2.micro instance with below ubuntu version.
ubuntu-wily-15.10-amd64-server-20151203 (ami-7d948911)
4.2.0-23-generic
Periodically around once per day my instance consumes 100% CPU by kswapd0
kernell process.
Instance restart helps, otherwise this continues.
I have no swap configured.
ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: linux-image-4.2.0-23-generic 4.2.0-23.28
ProcVersionSignature: User Name 4.2.0-23.28-generic 4.2.6
Uname: Linux 4.2.0-23-generic x86_64
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Jan 9 07:44 seq
crw-rw---- 1 root audio 116, 33 Jan 9 07:44 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
Date: Sat Jan 9 20:32:49 2016
Ec2AMI: ami-7d948911
Ec2AMIManifest: (unknown)
Ec2AvailabilityZone: eu-central-1a
Ec2InstanceType: t2.micro
Ec2Kernel: unavailable
Ec2Ramdisk: unavailable
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize
libusb: -99
MachineType: Xen HVM domU
PciMultimedia:
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB:
0 cirrusdrmfb
1 xen
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-23-generic
root=UUID=73008cf2-451d-4df0-a2e6-16ffb91670c7 ro console=tty1 console=ttyS0
RelatedPackageVersions:
linux-restricted-modules-4.2.0-23-generic N/A
linux-backports-modules-4.2.0-23-generic N/A
linux-firmware 1.149.3
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/07/2015
dmi.bios.vendor: Xen
dmi.bios.version: 4.2.amazon
dmi.chassis.type: 1
dmi.chassis.vendor: Xen
dmi.modalias:
dmi:bvnXen:bvr4.2.amazon:bd12/07/2015:svnXen:pnHVMdomU:pvr4.2.amazon:cvnXen:ct1:cvr:
dmi.product.name: HVM domU
dmi.product.version: 4.2.amazon
dmi.sys.vendor: Xen
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug ec2-images wily
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https://bugs.launchpad.net/bugs/1532480
Title:
kswapd0 consumes 100% CPU
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