Look at the this graph http://sgh.dk/~sgh/cpustat_month.png
This is a machine that it not doing anything cpu intensive. -- 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/1462919 Title: kswapd pulls server down every 2 weeks. Status in linux package in Ubuntu: Incomplete Bug description: in 15.04 even when having plenty of RAM and swap kswpd uses lots of CPU and might bring the machine down to a crawl making is unable to access it over the network. I say "might", because it's only a very clear feeling that I have. I do not know it for sure. Anyway the fact is that I have two server that once every 2 week ends up totally unaccessible from the network. They can be pinged though. Logging in locally takes a long time. Rebooting them locally takes a long time. They have absolutely no noticeable disk IO when in this stalled state. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: linux-image-3.19.0-16-generic 3.19.0-16.16 ProcVersionSignature: Ubuntu 3.19.0-18.18-generic 3.19.6 Uname: Linux 3.19.0-18-generic x86_64 AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 jun 8 09:57 seq crw-rw---- 1 root audio 116, 33 jun 8 09:57 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.17.2-0ubuntu1.1 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: Date: Mon Jun 8 10:02:44 2015 HibernationDevice: RESUME=UUID=17183f57-6587-47f2-84dc-553f7e5cf3a8 IwConfig: eth0 no wireless extensions. eth1 no wireless extensions. lo no wireless extensions. MachineType: Intel Corporation S5520UR PciMultimedia: ProcFB: 0 VESA VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-18-generic root=/dev/mapper/vg0-root ro nomdmonddf nomdmonisw crashkernel=384M-:128M nomdmonddf nomdmonisw crashkernel=384M-:128M nomdmonddf nomdmonisw crashkernel=384M-:128M nomdmonddf nomdmonisw crashkernel=384M-:128M nomdmonddf nomdmonisw crashkernel=384M-:128M RelatedPackageVersions: linux-restricted-modules-3.19.0-18-generic N/A linux-backports-modules-3.19.0-18-generic N/A linux-firmware 1.143.1 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: Upgraded to vivid on 2015-05-16 (22 days ago) dmi.bios.date: 12/17/2009 dmi.bios.vendor: Intel Corp. dmi.bios.version: S5500.86B.01.00.0046.121720091524 dmi.board.asset.tag: .................... dmi.board.name: S5520UR dmi.board.vendor: Intel Corporation dmi.board.version: E22554-606 dmi.chassis.asset.tag: .................... dmi.chassis.type: 23 dmi.chassis.vendor: ............................... dmi.chassis.version: .................. dmi.modalias: dmi:bvnIntelCorp.:bvrS5500.86B.01.00.0046.121720091524:bd12/17/2009:svnIntelCorporation:pnS5520UR:pvr....................:rvnIntelCorporation:rnS5520UR:rvrE22554-606:cvn...............................:ct23:cvr..................: dmi.product.name: S5520UR dmi.product.version: .................... dmi.sys.vendor: Intel Corporation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1462919/+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