[Bug 1722778] Re: System frequently becomes completely unresponsive due to thrashing

I have issue and my root partition is ext4. `mount` is full of other
crap I don't understand but I don't think any of it's "real" drives.

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Title:
System frequently becomes completely unresponsive due to thrashing

Status in linux package in Ubuntu:
Confirmed

Bug description:
To replicate:

Run firefox for a couple of hours.

Expected results:

All open applications should run normally: occasional slowdown for
page faults are tolerable but the observed behaviour is not.

Actual results:

Several times per day my computer will become completely unresponsive
apart from high hard disk activity. Once it enters this state: it will
not recover without a hard reset regardless of any time waited or
input given. On one occasion I have tested it by leaving it thrashing
for 12 hours, at the end of which there was no evidence of progress.

This behaviour was not observed when running Ubuntu 16.04 on the same
computer and swap settings.

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: linux-image-4.13.0-12-generic 4.13.0-12.13
ProcVersionSignature: Ubuntu 4.13.0-12.13-generic 4.13.3
Uname: Linux 4.13.0-12-generic x86_64
ApportVersion: 2.20.7-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/pcmC0D0p: jeremy 3367 F...m pulseaudio
/dev/snd/controlC0: jeremy 3367 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Thu Oct 12 00:41:01 2017
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=6ef78518-5d77-4673-9917-36ed31b247d9
InstallationDate: Installed on 2017-08-15 (56 days ago)
InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
MachineType: LENOVO 80TV
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-4.13.0-12-generic root=UUID=f2087105-8407-42b8-af6c-f00fe6846c51 ro rootflags=subvol=@ quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-4.13.0-12-generic N/A
linux-backports-modules-4.13.0-12-generic N/A
linux-firmware 1.169
SourcePackage: linux
UpgradeStatus: Upgraded to artful on 2017-09-14 (27 days ago)
dmi.bios.date: 03/07/2017
dmi.bios.vendor: LENOVO
dmi.bios.version: 3JCN26WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: VIUU4
dmi.board.vendor: LENOVO
dmi.board.version: SDK0K17763 WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo ideapad 310-15IKB
dmi.modalias: dmi:bvnLENOVO:bvr3JCN26WW:bd03/07/2017:svnLENOVO:pn80TV:pvrLenovoideapad310-15IKB:rvnLENOVO:rnVIUU4:rvrSDK0K17763WIN:cvnLENOVO:ct10:cvrLenovoideapad310-15IKB:
dmi.product.family: IDEAPAD
dmi.product.name: 80TV
dmi.product.version: Lenovo ideapad 310-15IKB
dmi.sys.vendor: LENOVO

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