apport information
** Tags added: apport-collected noble wayland-session
** Description changed:
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.
+ 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:
+ USERPID ACCESS COMMAND
+ /dev/snd/seq:archerallstars 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-firmware20240318.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:sku:
+ dmi.product.family: Swift 5
+ dmi.product.name: Swift SF514-52T
+ dmi.product.sku:
+ 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
** Attachment added: "AlsaInfo.txt"
https://bugs.launchpad.net/bugs/2064483/+attachment/5773792/+files/AlsaInfo.txt
--
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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