kernel-packages team mailing list archive

[Alex Smith <1206891@xxxxxxxxxxxxxxxxxx>]

The issue is that CONFIG_ANDROID_LOW_MEMORY_KILLER is enabled. I'm not
sure why this is on in the Ubuntu default kernel configuration as it
implements Android-specific behaviour. I installed the latest upstream
kernel package and the kernel config still has the low memory killer
enabled, so the same issue exists there too.

** Changed in: linux (Ubuntu)
       Status: Incomplete => Confirmed

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1206891

Title:
  Android low memory handler driver kills processes when there's still
  free RAM/swap

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  When I'm doing something memory intensive such as compiling a large
  project I find that I start getting processes killed (mainly Chrome),
  despite there still being a large amount of swap free. At first I
  thought this was being done by the normal Linux oom-killer, but it's
  actually the Android low memory handler driver which is built into the
  default Ubuntu kernel configuration. Example of the messages I get in
  syslog when a process is killed:

  Jul 31 11:04:34 asmith-linux kernel: [84686.869462] select 8851 (chrome), adj 300, size 18339, to kill
  Jul 31 11:04:34 asmith-linux kernel: [84686.869479] send sigkill to 8851 (chrome), adj 300, size 18339

  When this happens, although main memory is close to full, my swap is
  barely utilised at all - I have an 8GB swap partition, but I've yet to
  see more than around 1GB of it get used.

  Kernel version: Ubuntu 3.8.0-27.40-generic 3.8.13.4
  --- 
  ApportVersion: 2.9.2-0ubuntu8.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  asmith     2189 F.... pulseaudio
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
  CurrentDmesg:
   Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied
   dmesg: write failed: Broken pipe
  DistroRelease: Ubuntu 13.04
  InstallationDate: Installed on 2013-07-22 (8 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  MachineType: HP ProLiant ML110 G7
  MarkForUpload: True
  NonfreeKernelModules: nvidia
  Package: linux (not installed)
  ProcEnviron:
   SHELL=/bin/bash
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   LANGUAGE=en_GB:en
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.8.0-27-generic root=/dev/mapper/vg_m110image-lv_root ro quiet splash
  ProcVersionSignature: Ubuntu 3.8.0-27.40-generic 3.8.13.4
  RfKill:
   
  Tags:  raring
  Uname: Linux 3.8.0-27-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  WifiSyslog:
   
  dmi.bios.date: 02/01/2012
  dmi.bios.vendor: HP
  dmi.bios.version: J01
  dmi.chassis.type: 7
  dmi.chassis.vendor: HP
  dmi.modalias: dmi:bvnHP:bvrJ01:bd02/01/2012:svnHP:pnProLiantML110G7:pvr:cvnHP:ct7:cvr:
  dmi.product.name: ProLiant ML110 G7
  dmi.sys.vendor: HP

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1206891/+subscriptions