Public bug reported: Hello I don't know if this is normal operation or if it is possible to configure KSWAPD0.
I installed version 22.04 (jammy) choosing encrypted ZFS partitioning in an external disk. The installation chose to assign the swap partition to SDC2. On reboot, this partition does not exist. Depending on how I reboot it is either seen as SDA2 or SDB2. So I deactivated and opened a bug (https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1962409) However, this does not seem to block me. So I decided to continue using ZFS. My first decision was to copy the contents of my personal data partition to a directory under rpool/USERDATA with the RSYNC command This action lasts several hours and requires a lot of inputs and outputs. I noticed that firefox stopped responding. Every second, a message asking if I want to wait is displayed. I also saw that the KSWAPD0 process almost permanently consumes a processor. All this seems to me to be related to the copy. ( time sudo rsync -av --exclude {'.Trash*','Downloads','$RECYCLE.BIN'} /media/Common /Common ) I know that ZFS wants to use the full RAM (6GB) to be able to maximally compress the data. So my question is whether this is completely normal. I would still like to be able to consult the Internet while copying a directory. I post under KSWAP0 without knowing if he is entirely responsible. thank you ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: linux-image-5.15.0-23-generic 5.15.0-23.23 ProcVersionSignature: Ubuntu 5.15.0-23.23-generic 5.15.27 Uname: Linux 5.15.0-23-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.11-0ubuntu80 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: a 3727 F.... pulseaudio CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Mon Apr 4 14:27:55 2022 HibernationDevice: RESUME=none InstallationDate: Installed on 2022-04-01 (2 days ago) InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Beta amd64 (20220329.1) MachineType: TOSHIBA SATELLITE S70t-A ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fr_FR.UTF-8 SHELL=/bin/bash ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/BOOT/ubuntu_b4yff9@/vmlinuz-5.15.0-23-generic root=ZFS=rpool/ROOT/ubuntu_b4yff9 ro RelatedPackageVersions: linux-restricted-modules-5.15.0-23-generic N/A linux-backports-modules-5.15.0-23-generic N/A linux-firmware 20220329.git681281e4-0ubuntu1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/18/2014 dmi.bios.release: 1.30 dmi.bios.vendor: Insyde Corp. dmi.bios.version: 1.30 dmi.board.asset.tag: Type2 - Board Asset Tag dmi.board.name: Type2 - Board Product Name1 dmi.board.vendor: Type2 - Board Vendor Name1 dmi.board.version: Type2 - Board Version dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: OEM Chassis Manufacturer dmi.chassis.version: OEM Chassis Version dmi.ec.firmware.release: 1.30 dmi.modalias: dmi:bvnInsydeCorp.:bvr1.30:bd04/18/2014:br1.30:efr1.30:svnTOSHIBA:pnSATELLITES70t-A:pvrPSKN6E-01C00KFR:rvnType2-BoardVendorName1:rnType2-BoardProductName1:rvrType2-BoardVersion:cvnOEMChassisManufacturer:ct10:cvrOEMChassisVersion:skuPSKN6E: dmi.product.family: Type1Family dmi.product.name: SATELLITE S70t-A dmi.product.sku: PSKN6E dmi.product.version: PSKN6E-01C00KFR dmi.sys.vendor: TOSHIBA ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug jammy wayland-session ** Attachment added: "TOP -N 1" https://bugs.launchpad.net/bugs/1967748/+attachment/5576841/+files/KSWAPD0.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1967748 Title: kswapd0 take 100% processor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1967748/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
