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Message #109300
[Bug 1435363] CurrentDmesg.txt
apport information
** Attachment added: "CurrentDmesg.txt"
https://bugs.launchpad.net/bugs/1435363/+attachment/4353427/+files/CurrentDmesg.txt
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https://bugs.launchpad.net/bugs/1435363
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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