kernel-packages team mailing list archive

[Mohammed Naser <1435363@xxxxxxxxxxxxxxxxxx>]

apport information

** Attachment added: "ProcCpuinfo.txt"
   https://bugs.launchpad.net/bugs/1435363/+attachment/4353430/+files/ProcCpuinfo.txt

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Title:
  KSM causing performance and instability issues

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  This seems to be a bug that has regressed, I have encountered the same
  issue as 2 other reports:

  LP: #1349897

  Running kernel: 3.13.0-46-generic

  This is replicated over many compute nodes (KVM) running OpenStack.
  The workaround is to disable KSM:

  echo 2 > /sys/kernel/mm/ksm/run

  This fixes the issue temporarily.
  --- 
  AlsaDevices:
   total 0
   crw-rw---- 1 root audio 116,  1 Mar 15 02:22 seq
   crw-rw---- 1 root audio 116, 33 Mar 15 02:22 timer
  AplayDevices: Error: [Errno 2] No such file or directory
  ApportVersion: 2.14.1-0ubuntu3.7
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CRDA: Error: [Errno 2] No such file or directory
  DistroRelease: Ubuntu 14.04
  InstallationDate: Installed on 2015-03-15 (8 days ago)
  InstallationMedia: Ubuntu-Server 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.3)
  Lsusb:
   Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 003: ID 0557:2221 ATEN International Co., Ltd Winbond Hermon
   Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Supermicro X9DRT-HF+
  Package: linux (not installed)
  PciMultimedia:
   
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-32-generic root=UUID=b1b3ee88-e8fc-4a36-9fd3-1b0e3da6ca5a ro nomdmonddf nomdmonisw
  ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-32-generic N/A
   linux-backports-modules-3.13.0-32-generic  N/A
   linux-firmware                             1.127.11
  RfKill: Error: [Errno 2] No such file or directory
  Tags:  trusty
  Uname: Linux 3.13.0-32-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  _MarkForUpload: True
  dmi.bios.date: 01/21/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 3.0b
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: X9DRT-HF+
  dmi.board.vendor: Supermicro
  dmi.board.version: 0123456789
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 17
  dmi.chassis.vendor: Supermicro
  dmi.chassis.version: 0123456789
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3.0b:bd01/21/2014:svnSupermicro:pnX9DRT-HF+:pvr0123456789:rvnSupermicro:rnX9DRT-HF+:rvr0123456789:cvnSupermicro:ct17:cvr0123456789:
  dmi.product.name: X9DRT-HF+
  dmi.product.version: 0123456789
  dmi.sys.vendor: Supermicro

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