Public bug reported:
I've just upgraded to 16.04 from 15.10, and now the memory usage
steadily increases from when I first boot up. After just an hour or two,
all 20GB of RAM is used up, even if nothing is running, and I am forced
to reboot (rebooting frequently is incompatible with my normal tasks).
Here is output from free, spaced about half a second apart:
[0753][me@-t450s:~]$ free -m
total used free shared buff/cache available
Mem: 19958 1001 5808 7147 13148 11648
Swap: 20358 0 20358
[0753][me@-t450s:~]$ free -m
total used free shared buff/cache available
Mem: 19958 1001 5806 7148 13151 11647
Swap: 20358 0 20358
[0753][me@-t450s:~]$ free -m
total used free shared buff/cache available
Mem: 19958 1001 5804 7149 13153 11646
Swap: 20358 0 20358
[0753][me@-t450s:~]$ free -m
total used free shared buff/cache available
Mem: 19958 1001 5801 7151 13156 11644
Swap: 20358 0 20358
htop shows that 8GB is in use, although there are no applications using
much. I understand from free that it is all buffered/cached?
Both htop and free suggest that the memory is really not available.
I do not know where it is going.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-22-generic 4.4.0-22.40
ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC2: cpbl 2571 F.... pulseaudio
/dev/snd/controlC1: cpbl 2571 F.... pulseaudio
/dev/snd/controlC0: cpbl 2571 F.... pulseaudio
CurrentDesktop: Unity
Date: Wed May 25 07:54:14 2016
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=e5d0a2bb-27cf-494a-849c-1985d165fbd7
InstallationDate: Installed on 2016-02-12 (102 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: LENOVO 20BXCTO1WW
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-22-generic.efi.signed
root=UUID=ea2fb511-8d62-4b96-bdaa-4b3f7bf79cc6 ro noprompt quiet splash
vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-4.4.0-22-generic N/A
linux-backports-modules-4.4.0-22-generic N/A
linux-firmware 1.157
SourcePackage: linux
UpgradeStatus: Upgraded to xenial on 2016-05-24 (0 days ago)
dmi.bios.date: 11/06/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: JBET54WW (1.19 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20BXCTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias:
dmi:bvnLENOVO:bvrJBET54WW(1.19):bd11/06/2015:svnLENOVO:pn20BXCTO1WW:pvrThinkPadT450s:rvnLENOVO:rn20BXCTO1WW:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.name: 20BXCTO1WW
dmi.product.version: ThinkPad T450s
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
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https://bugs.launchpad.net/bugs/1585598
Title:
steady decrease in available memory (RAM) under 16.04
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