yas, to confirm, when you are booted back tot he logon screen with the
Ubuntu kernel (not mainline), are there any crash files in /var/crash?
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1504914
Title:
System freeze/restart on high memory usage
Status in linux package in Ubuntu:
Incomplete
Bug description:
When a process demands increasingly to the limit of memory available the
system becomes unusable, mouse start to not respond promptly or not at all, and
eventually the system resets to the logon screen.
The expected behavior would be not to lose control of the machine but crash
eventually the process or application asking for resources.
What I have done?
- Discard hardware problems, testing memory with memtest86+. No issue
detected there.
- Test without swap file and with swap file of 4Gb (similar to main memory).
Same crash.
- Following the advise on
http://askubuntu.com/questions/41778/computer-freezing-on-almost-full-ram-possibly-disk-cache-problem
set the sysctl vm.min_free_kbytes and adjust swappiness as described here
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/159356/comments/41
With this adjustment the issue have been reduced drastically, I'm not losing
control of the system even if it slows down when ramping up the swap use.
- I've not yet tried the suggestion here
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/159356/comments/35 because
with the previous tip the system is behaving much as expected, but I have it in
the list to test it if I experiment further crashes.
How did I reproduce it?
- First, I experience this when having several chrome tabs open (chrome is
eating a lot of memory lately being in tabs or in extensions). It's easy to
press CTRL+T several times and arrive to a memory limit.
- Second, I experience this when using virtualbox, given that the vm was
asking half of the memory available, as soon as I open a couple of tabs in
chrome in the host the system started to be unusable.
- Third, to reproduce it easily I've installed memtester application and run
a couple of instances of it asking 2G chunks, this effectively reproduce the
crash very effectively.
Tell me if I should add any other log to help diagnose the issue.
Hope this helps.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-65-generic 3.13.0-65.106
ProcVersionSignature: Ubuntu 3.13.0-65.106-generic 3.13.11-ckt26
Uname: Linux 3.13.0-65-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.15
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: yas 3625 F.... pulseaudio
CurrentDesktop: Unity
Date: Sun Oct 11 10:41:41 2015
InstallationDate: Installed on 2015-01-17 (266 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64
(20140722.2)
MachineType: SAMSUNG ELECTRONICS CO., LTD. 900X3C/900X3D/900X3E/900X4C/900X4D
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-65-generic.efi.signed
root=UUID=c5d1dcf0-367e-4643-99f9-735befcdaba1 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.13.0-65-generic N/A
linux-backports-modules-3.13.0-65-generic N/A
linux-firmware 1.127.15
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/15/2015
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: P11ABK
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: NP900X3E-A01ES
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: FAB1
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: 0.1
dmi.modalias:
dmi:bvnPhoenixTechnologiesLtd.:bvrP11ABK:bd07/15/2015:svnSAMSUNGELECTRONICSCO.,LTD.:pn900X3C/900X3D/900X3E/900X4C/900X4D:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rnNP900X3E-A01ES:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1:
dmi.product.name: 900X3C/900X3D/900X3E/900X4C/900X4D
dmi.product.version: 0.1
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.
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