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["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

** Summary changed:

- Lubuntu 11.10 uses too much swap, not releasing cache/buffers
+ [btrfs] Lubuntu 11.10 uses too much swap, not releasing cache/buffers

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https://bugs.launchpad.net/bugs/863552

Title:
  [btrfs] Lubuntu 11.10 uses too much swap, not releasing cache/buffers

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  I've tried installing Lubuntu 11.10 on VIA 266 motherboard with 1.2
  GHz Athlon processor and 256Mb DDR memory. I've installed it on 40Gb
  hard drive with 1Gb swapfile and all other space as root partition in
  btrfs.

  Entire installation process took too much time, but I thought that
  it's due to limited amount of memory. But when the system booted I've
  found that It used only 50Mb and 50Mb were in swap. It was constantly
  swapping, as soon as system tried to get some memory for newly
  starting application. And swap usage was almost the same as memory
  usage. That is, when 100 Mb of memory was used, swap was used for
  about 100Mb etc.

   Buffers took about 40Mb. Booting process took about 3 minutes.

  System was almost unusable since it was slowed down so much. I've
  tried changing swappines from 60 to 10 but that had absolutely no
  effect.

  So, I had to remove that system and install LTS version with LXDE and
  it works pretty fast.

  Sorry for not providing ubuntu-bug data. I forgot to do that, but now
  that system is removed. But I think that this bug is too important to
  ignore.

  P.S: I've experienced something very similar on another machine when used someone's build of cfs kernel.
  --- 
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 1.23-0ubuntu1
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ubuntu     2781 F.... lxpanel
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'V8235'/'VIA 8235 with VIA1612A at 0xe000, irq 22'
     Mixer name	: 'VIA Technologies VIA1612A'
     Components	: 'AC97a:56494161'
     Controls      : 36
     Simple ctrls  : 22
  CasperVersion: 1.284
  DistroRelease: Ubuntu 11.10
  IwConfig:
   lo        no wireless extensions.
   
   eth0      no wireless extensions.
   
   ppp0      no wireless extensions.
  LiveMediaBuild: Lubuntu 11.10 "Oneiric Ocelot" - Beta i386 (20110921.1)
  Lsusb:
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 001 Device 002: ID 13fe:3600 Kingston Technology Company Inc.
  MachineType: VIA Technologies, Inc. KM266-8235
  Package: linux (not installed)
  ProcEnviron:
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=(loop)/casper/vmlinuz boot=casper iso-scan/filename=/boot/iso/lhostname-11.10-beta2-desktop-i386.iso nomodeset noprompt quiet splash
  ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4
  RelatedPackageVersions:
   linux-restricted-modules-3.0.0-11-generic N/A
   linux-backports-modules-3.0.0-11-generic  N/A
   linux-firmware                            1.60
  RfKill: Error: [Errno 2] No such file or directory
  StagingDrivers: zram
  Tags:  oneiric staging
  Uname: Linux 3.0.0-11-generic i686
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
  dmi.bios.date: 09/09/2003
  dmi.bios.vendor: Phoenix Technologies, LTD
  dmi.bios.version: 6.00 PG
  dmi.board.name: KM266-8235
  dmi.chassis.type: 3
  dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr6.00PG:bd09/09/2003:svnVIATechnologies,Inc.:pnKM266-8235:pvr:rvn:rnKM266-8235:rvr:cvn:ct3:cvr:
  dmi.product.name: KM266-8235
  dmi.sys.vendor: VIA Technologies, Inc.

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