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Message #109317
[Bug 1435363] Re: KSM causing performance and instability issues
apport information
** Attachment removed: "BootDmesg.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1435363/+attachment/4353426/+files/BootDmesg.txt
** Attachment removed: "CurrentDmesg.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1435363/+attachment/4353427/+files/CurrentDmesg.txt
** Attachment removed: "IwConfig.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1435363/+attachment/4353428/+files/IwConfig.txt
** Attachment removed: "Lspci.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1435363/+attachment/4353429/+files/Lspci.txt
** Attachment removed: "ProcCpuinfo.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1435363/+attachment/4353430/+files/ProcCpuinfo.txt
** Attachment removed: "ProcEnviron.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1435363/+attachment/4353431/+files/ProcEnviron.txt
** Attachment removed: "ProcInterrupts.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1435363/+attachment/4353432/+files/ProcInterrupts.txt
** Attachment removed: "ProcModules.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1435363/+attachment/4353433/+files/ProcModules.txt
** Attachment removed: "UdevDb.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1435363/+attachment/4353434/+files/UdevDb.txt
** Attachment removed: "UdevLog.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1435363/+attachment/4353435/+files/UdevLog.txt
** Attachment removed: "WifiSyslog.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1435363/+attachment/4353436/+files/WifiSyslog.txt
** Description changed:
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
** Description changed:
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 22 14:30 seq
+ crw-rw---- 1 root audio 116, 33 Mar 22 14:30 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 2014-12-14 (99 days ago)
+ InstallationMedia: Ubuntu-Server 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.3)
+ MachineType: Dell Inc. PowerEdge R620
+ Package: linux (not installed)
+ PciMultimedia:
+
+ ProcFB: 0 EFI VGA
+ ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-46-generic.efi.signed root=UUID=68d30a86-3c67-4691-b142-d27a459986e8 ro
+ ProcVersionSignature: Ubuntu 3.13.0-46.79-generic 3.13.11-ckt15
+ RelatedPackageVersions:
+ linux-restricted-modules-3.13.0-46-generic N/A
+ linux-backports-modules-3.13.0-46-generic N/A
+ linux-firmware 1.127.11
+ RfKill: Error: [Errno 2] No such file or directory
+ Tags: trusty
+ Uname: Linux 3.13.0-46-generic x86_64
+ UpgradeStatus: No upgrade log present (probably fresh install)
+ UserGroups:
+
+ _MarkForUpload: True
+ dmi.bios.date: 01/16/2014
+ dmi.bios.vendor: Dell Inc.
+ dmi.bios.version: 2.2.2
+ dmi.board.name: 01W23F
+ dmi.board.vendor: Dell Inc.
+ dmi.board.version: A05
+ dmi.chassis.type: 23
+ dmi.chassis.vendor: Dell Inc.
+ dmi.modalias: dmi:bvnDellInc.:bvr2.2.2:bd01/16/2014:svnDellInc.:pnPowerEdgeR620:pvr:rvnDellInc.:rn01W23F:rvrA05:cvnDellInc.:ct23:cvr:
+ dmi.product.name: PowerEdge R620
+ dmi.sys.vendor: Dell Inc.
** Attachment added: "BootDmesg.txt"
https://bugs.launchpad.net/bugs/1435363/+attachment/4353443/+files/BootDmesg.txt
--
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/1435363
Title:
KSM causing performance and instability issues
Status in linux package in Ubuntu:
Confirmed
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 22 14:30 seq
crw-rw---- 1 root audio 116, 33 Mar 22 14:30 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 2014-12-14 (99 days ago)
InstallationMedia: Ubuntu-Server 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.3)
MachineType: Dell Inc. PowerEdge R620
Package: linux (not installed)
PciMultimedia:
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-46-generic.efi.signed root=UUID=68d30a86-3c67-4691-b142-d27a459986e8 ro
ProcVersionSignature: Ubuntu 3.13.0-46.79-generic 3.13.11-ckt15
RelatedPackageVersions:
linux-restricted-modules-3.13.0-46-generic N/A
linux-backports-modules-3.13.0-46-generic N/A
linux-firmware 1.127.11
RfKill: Error: [Errno 2] No such file or directory
Tags: trusty
Uname: Linux 3.13.0-46-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
_MarkForUpload: True
dmi.bios.date: 01/16/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 2.2.2
dmi.board.name: 01W23F
dmi.board.vendor: Dell Inc.
dmi.board.version: A05
dmi.chassis.type: 23
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr2.2.2:bd01/16/2014:svnDellInc.:pnPowerEdgeR620:pvr:rvnDellInc.:rn01W23F:rvrA05:cvnDellInc.:ct23:cvr:
dmi.product.name: PowerEdge R620
dmi.sys.vendor: Dell Inc.
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References
