Unfortunately the out of memory errors persisted with 4.4.0-104, so 6 days ago we switched to 4.8.0-58.
No more OOM errors so far, but it seems the performance was affected a bit, there seem to be some freezes during the nightly jobs. Seeing that the similar bug, https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1655842 was introduced while fixing "LP#1647400, a bug that caused freezes under some workloads", it seems plausible that, since the two issues are related, fixing one breaks the other and the other way around. In any case, I can live with freezes on this particular machine, instead of OOM errors, so for the time being I'll stay on 4.8.0-58. I may experiment again with newer 4.4.0 kernels at the end of the month. -- 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/1734744 Title: OOM killer with kernel 4.4.0-92 Status in linux package in Ubuntu: Incomplete Status in linux source package in Xenial: Incomplete Bug description: When putting pressure on a Linux Node in Azure we see OOM killers (similar to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1655842 but not this is a different kernel) Reverting the kernel to 4.4.0-57 fixes the problem. dmesg and kernel.log attached --- AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Dec 11 15:21 seq crw-rw---- 1 root audio 116, 33 Dec 11 15:21 timer AplayDevices: Error: [Errno 2] No such file or directory ApportVersion: 2.20.1-0ubuntu2.13 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: N/A DistroRelease: Ubuntu 16.04 IwConfig: Error: [Errno 2] No such file or directory Lsusb: Error: command ['lsusb'] failed with exit code 1: MachineType: Microsoft Corporation Virtual Machine Package: linux (not installed) PciMultimedia: ProcFB: 0 hyperv_fb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-92-generic root=UUID=512611f4-b05a-4d8a-b743-438b71c5385d ro console=tty1 console=ttyS0 earlyprintk=ttyS0 rootdelay=300 ProcVersionSignature: Ubuntu 4.4.0-92.115-generic 4.4.76 RelatedPackageVersions: linux-restricted-modules-4.4.0-92-generic N/A linux-backports-modules-4.4.0-92-generic N/A linux-firmware 1.157.13 RfKill: Error: [Errno 2] No such file or directory Tags: xenial uec-images xenial uec-images Uname: Linux 4.4.0-92-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: _MarkForUpload: True dmi.bios.date: 06/02/2017 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 090007 dmi.board.name: Virtual Machine dmi.board.vendor: Microsoft Corporation dmi.board.version: 7.0 dmi.chassis.asset.tag: 7783-7084-3265-9085-8269-3286-77 dmi.chassis.type: 3 dmi.chassis.vendor: Microsoft Corporation dmi.chassis.version: 7.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr090007:bd06/02/2017:svnMicrosoftCorporation:pnVirtualMachine:pvr7.0:rvnMicrosoftCorporation:rnVirtualMachine:rvr7.0:cvnMicrosoftCorporation:ct3:cvr7.0: dmi.product.name: Virtual Machine dmi.product.uuid: D88904A9-DF88-454F-9F50-7A8DE8964445 dmi.product.version: 7.0 dmi.sys.vendor: Microsoft Corporation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1734744/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
