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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)
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
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swap storms kills interactive use
https://bugs.launchpad.net/bugs/1861359
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