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While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1861359
and then change the status of the bug to 'Confirmed'.
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This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1861359
Title:
swap storms kills interactive use
Status in linux package in Ubuntu:
Incomplete
Bug description:
Hello, several times since upgrading to focal from 19.04 I've found my
computer entirely unresponsive for periods of twenty or thirty
seconds. No mouse movement, no keyboard input, the screen output does
not change.
My computer was using swap space and despite very slow writeout speeds
well below what the NVME drive can handle, the computer was unusable.
I've captured some vmstat 1 output and top output that I started
collecting during the event. (Normally one very long painful period is
followed by several shorter periods of uselessness.)
Thanks
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-12-generic 5.4.0-12.15
ProcVersionSignature: Ubuntu 5.4.0-12.15-generic 5.4.8
Uname: Linux 5.4.0-12-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu15
Architecture: amd64
Date: Wed Jan 29 23:44:05 2020
ProcEnviron:
TERM=rxvt-unicode-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: linux-signed-5.4
UpgradeStatus: Upgraded to focal on 2020-01-24 (5 days ago)
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