apport information ** Attachment added: "ProcEnviron.txt" https://bugs.launchpad.net/bugs/2064483/+attachment/5773803/+files/ProcEnviron.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/2064483 Title: Ubuntu 24.04 doesn't respect vm.swappiness Status in linux package in Ubuntu: New Status in linux source package in Noble: New Bug description: My sysctl vm.swappiness returns vm.swappiness = 180. Swap kicked in when RAM is filled around 95%. I’m using zRAM as the swap. When this happened, my laptop is barely usable, as the system would have to do both the swap and compression at the same time. If `vm.swappiness = 180` worked as intended, the issue wouldn't have happened, as the swap would kick in early, which is good for zRAM system like mine, see kernel docs: https://docs.kernel.org/admin- guide/sysctl/vm.html#swappiness This is my main workstation (laptop). I used to run openSUSE Tumbleweed on it (~2 years). The experience with `vm.swappiness` is totally different. --- Here's my zRAM script: ``` #!/bin/bash mem_total_kb=$(grep MemTotal /proc/meminfo | grep -E --only-matching '[[:digit:]]+') mem_total=$((mem_total_kb * 1536)) modprobe zram echo zstd > /sys/block/zram0/comp_algorithm; echo $mem_total > /sys/block/zram0/disksize mkswap /dev/zram0 swapon -p 100 /dev/zram0 ``` Here's the content of my /etc/sysctl.conf ``` vm.swappiness=180 vm.page-cluster=0 vm.watermark_scaling_factor=125 vm.watermark_boost_factor=0 ``` I make a fresh install, not upgrading from the previous release. I also upload the screen recording of this issue on my personal Proton drive here: https://drive.proton.me/urls/5KTCS1DF58#qZTscuv5XE0M I mount ~/ramtest in the RAM, then copy the system's usr folder to ~/ramtest. Since most contents in usr are compressible, it should be perfect to show this issue. --- ProblemType: Bug ApportVersion: 2.28.1-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/seq: archerallstars 4444 F.... pipewire /dev/snd/controlC0: archerallstars 4448 F.... wireplumber CRDA: N/A CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 24.04 InstallationDate: Installed on 2024-04-27 (5 days ago) InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424) MachineType: Acer Swift SF514-52T NonfreeKernelModules: zfs Package: linux (not installed) ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/BOOT/ubuntu_o799y4@/vmlinuz-6.8.0-31-generic root=ZFS=rpool/ROOT/ubuntu_o799y4 ro quiet splash vt.handoff=1 ProcVersionSignature: Ubuntu 6.8.0-31.31-generic 6.8.1 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-6.8.0-31-generic N/A linux-backports-modules-6.8.0-31-generic N/A linux-firmware 20240318.git3b128b60-0ubuntu2 Tags: noble wayland-session Uname: Linux 6.8.0-31-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip libvirt lpadmin plugdev sudo users _MarkForUpload: True dmi.bios.date: 11/26/2018 dmi.bios.release: 1.11 dmi.bios.vendor: Insyde Corp. dmi.bios.version: V1.11 dmi.board.name: Carlsberg_KL dmi.board.vendor: KBL dmi.board.version: V1.11 dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: V1.11 dmi.ec.firmware.release: 1.5 dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.11:bd11/26/2018:br1.11:efr1.5:svnAcer:pnSwiftSF514-52T:pvrV1.11:rvnKBL:rnCarlsberg_KL:rvrV1.11:cvnAcer:ct10:cvrV1.11:sku0000000000000000: dmi.product.family: Swift 5 dmi.product.name: Swift SF514-52T dmi.product.sku: 0000000000000000 dmi.product.version: V1.11 dmi.sys.vendor: Acer modified.conffile..etc.default.apport: # set this to 0 to disable apport, or to 1 to enable it # you can temporarily override this with # sudo service apport start force_start=1 enabled=0 mtime.conffile..etc.default.apport: 2024-04-27T05:52:33.862578 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2064483/+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
