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[Andrzej <1301245@xxxxxxxxxxxxxxxxxx>]

The problem still persists in 14.04 with updates (haven't checked
14.10). I have managed to solve(?) it by adding a "noautogroup"
parameter to the kernel command line.

More details:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1219548


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

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https://bugs.launchpad.net/bugs/1301245

Title:
  System unresponsive under (IO/memory?) load

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Tasks producing a lot of IO activity and/or use large amount of memory
  (uncompressing a .tar.gz file, starting a VM in virtualbox) starve the
  rest of the system. The system is responding to user input very slowly
  (jerky mouse pointer movement with >1s intervals etc). I have not seen
  that issue on previous Ubuntu versions, this is the first time I use a
  64 bit system with full disk encryption.

  64bit Xubuntu 13.10. Full disk encryption. 4GB memory. Sony Vaio
  laptop. Same behavior observed with Nouveau and NVidia drivers.

  $ uname -a
  Linux laptop 3.11.0-18-generic #32-Ubuntu SMP Tue Feb 18 21:11:14 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

  $ free -m
               total       used       free     shared    buffers     cached
  Mem:          3870       2580       1289          0         33        406
  -/+ buffers/cache:       2140       1730
  Swap:         4011        959       3052

  $ lspci
  00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 02)
  00:01.0 PCI bridge: Intel Corporation Core Processor PCI Express x16 Root Port (rev 02)
  00:1a.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05)
  00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 05)
  00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 05)
  00:1c.1 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 2 (rev 05)
  00:1c.2 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 3 (rev 05)
  00:1c.3 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 4 (rev 05)
  00:1c.5 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 6 (rev 05)
  00:1c.6 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 7 (rev 05)
  00:1d.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05)
  00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a5)
  00:1f.0 ISA bridge: Intel Corporation Mobile 5 Series Chipset LPC Interface Controller (rev 05)
  00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 6 port SATA AHCI Controller (rev 05)
  00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 05)
  00:1f.6 Signal processing controller: Intel Corporation 5 Series/3400 Series Chipset Thermal Subsystem (rev 05)
  01:00.0 VGA compatible controller: NVIDIA Corporation GT218M [GeForce 310M] (rev a2)
  01:00.1 Audio device: NVIDIA Corporation High Definition Audio Controller (rev a1)
  02:00.0 Network controller: Qualcomm Atheros AR9287 Wireless Network Adapter (PCI-Express) (rev 01)
  03:00.0 SD Host controller: Ricoh Co Ltd MMC/SD Host Controller
  03:00.1 System peripheral: Ricoh Co Ltd R5U2xx (R5U230 / R5U231 / R5U241) [Memory Stick Host Controller]
  03:00.3 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 PCIe IEEE 1394 Controller
  03:00.4 SD Host controller: Ricoh Co Ltd MMC/SD Host Controller
  04:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8057 PCI-E Gigabit Ethernet Controller (rev 10)
  05:00.0 Multimedia controller: Fujitsu Limited. Device 2036
  06:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 03)
  3f:00.0 Host bridge: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers (rev 02)
  3f:00.1 Host bridge: Intel Corporation Core Processor QuickPath Architecture System Address Decoder (rev 02)
  3f:02.0 Host bridge: Intel Corporation Core Processor QPI Link 0 (rev 02)
  3f:02.1 Host bridge: Intel Corporation Core Processor QPI Physical 0 (rev 02)
  3f:02.2 Host bridge: Intel Corporation Core Processor Reserved (rev 02)
  3f:02.3 Host bridge: Intel Corporation Core Processor Reserved (rev 02)

  $ lsmod 
  Module                  Size  Used by
  pci_stub               12622  1 
  vboxpci                23194  0 
  vboxnetadp             25670  0 
  vboxnetflt             27613  0 
  vboxdrv               320455  3 vboxnetadp,vboxnetflt,vboxpci
  bnep                   19704  2 
  rfcomm                 69130  16 
  parport_pc             32701  0 
  ppdev                  17671  0 
  snd_hda_codec_hdmi     41154  4 
  snd_hda_codec_realtek    56475  1 
  snd_hda_intel          52267  5 
  snd_hda_codec         188738  3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel
  uvcvideo               80885  1 
  intel_powerclamp       14705  0 
  snd_hwdep              13602  1 snd_hda_codec
  coretemp               13435  0 
  videobuf2_vmalloc      13216  1 uvcvideo
  videobuf2_memops       13362  1 videobuf2_vmalloc
  snd_pcm               102033  3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
  kvm_intel             138567  0 
  kvm                   431754  1 kvm_intel
  videobuf2_core         40499  1 uvcvideo
  pn533                  34880  0 
  arc4                   12608  2 
  videodev              133509  3 uvcvideo,videobuf2_core
  nfc                    94643  1 pn533
  snd_page_alloc         18710  2 snd_pcm,snd_hda_intel
  joydev                 17377  0 
  snd_seq_midi           13324  0 
  snd_seq_midi_event     14899  1 snd_seq_midi
  snd_rawmidi            30095  1 snd_seq_midi
  ath9k                 155779  0 
  ath9k_common           13859  1 ath9k
  ath9k_hw              444732  2 ath9k_common,ath9k
  snd_seq                61560  2 snd_seq_midi_event,snd_seq_midi
  btusb                  28267  0 
  ath                    23827  3 ath9k_common,ath9k,ath9k_hw
  snd_seq_device         14497  3 snd_seq,snd_rawmidi,snd_seq_midi
  mac80211              597268  1 ath9k
  cfg80211              480503  3 ath,ath9k,mac80211
  psmouse                97655  0 
  bluetooth             372041  22 bnep,btusb,rfcomm
  snd_timer              29433  2 snd_pcm,snd_seq
  snd                    69141  21 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,snd_seq_device,snd_seq_midi
  soundcore              12680  1 snd
  microcode              23656  0 
  serio_raw              13413  0 
  mac_hid                13205  0 
  intel_ips              18470  0 
  sony_laptop            54219  0 
  lpc_ich                21080  0 
  lp                     17759  0 
  parport                42299  3 lp,ppdev,parport_pc
  binfmt_misc            17468  1 
  ext2                   72949  1 
  dm_crypt               22832  1 
  raid10                 48079  0 
  raid456                77558  0 
  async_memcpy           12769  1 raid456
  async_raid6_recov      12984  1 raid456
  async_pq               13326  1 raid456
  async_xor              13121  2 async_pq,raid456
  async_tx               13509  5 async_pq,raid456,async_xor,async_memcpy,async_raid6_recov
  xor                    21411  1 async_xor
  raid6_pq               97812  2 async_pq,async_raid6_recov
  raid1                  35557  0 
  raid0                  17842  0 
  multipath              13145  0 
  linear                 12894  0 
  hid_generic            12548  0 
  usbhid                 53014  0 
  hid                   101762  2 hid_generic,usbhid
  mmc_block              35880  0 
  nouveau               943749  2 
  crct10dif_pclmul       14289  0 
  mxm_wmi                13021  1 nouveau
  crc32_pclmul           13113  0 
  ghash_clmulni_intel    13259  0 
  aesni_intel            55624  3 
  aes_x86_64             17131  1 aesni_intel
  lrw                    13286  1 aesni_intel
  gf128mul               14951  1 lrw
  glue_helper            13990  1 aesni_intel
  ablk_helper            13597  1 aesni_intel
  cryptd                 20359  4 ghash_clmulni_intel,aesni_intel,ablk_helper
  i2c_algo_bit           13413  1 nouveau
  ahci                   25819  2 
  ttm                    84169  1 nouveau
  libahci                32009  1 ahci
  drm_kms_helper         52710  1 nouveau
  sky2                   58191  0 
  firewire_ohci          40327  0 
  firewire_core          64534  1 firewire_ohci
  sdhci_pci              18981  0 
  drm                   297056  4 ttm,drm_kms_helper,nouveau
  sdhci                  42898  1 sdhci_pci
  crc_itu_t              12707  1 firewire_core
  wmi                    19070  2 mxm_wmi,nouveau
  video                  19318  1 nouveau

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