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
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Noble)
Importance: Undecided
Status: New
** Also affects: Ubuntu Noble
Importance: Undecided
Status: New
** No longer affects: ubuntu
** No longer affects: Ubuntu
I have done the test with free -m outputs with vm.swappiness=180 on
Tumbleweed.
** Attachment added: "Tumbleweed respects vm.swappiness -- free -m.mp4"
https://bugs.launchpad.net/ubuntu/+bug/2064483/+attachment/5773791/+files/Tumbleweed%20respects%20vm.swappiness%20--%20free%20-m.mp4
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You
I have done the test with free -m outputs with vm.swappiness=180 on
Ubuntu 24.04.
** Attachment added: "Ubuntu 24.04 doesn't respect vm.swappiness -- free -m.mp4"
To make sure that vm.swappiness is really contribute to the tendency to
swap of the kernel as documented, I also did a test on Tumbleweed with
vm.swappiness=60, which is the default value.
The test result is as expected, the swap kicked in late compared to
vm.swappiness=180. And not only that,
I add a test on Tumbleweed in KVM with vm.swappiness=180.
The result is as expected, it's not broken in Tumbleweed. With
vm.swappiness=180 the swap kicked in at around 55% of RAM filled, not
95%. And it will maintain this free space percentage, depending on the
compression ratio of the data
Thank you for taking the time to report this bug and helping to make
Ubuntu better. It seems that your bug report is not filed about a
specific source package though, rather it is just filed against Ubuntu
in general. It is important that bug reports be filed about source
packages so that people
** Attachment added: "The screen recording of this issue. I didn't know I can
attach file. This is the same recording as the one in OP."
https://bugs.launchpad.net/ubuntu/+bug/2064483/+attachment/5773508/+files/Ubuntu%2024.04%20doesn%27t%20respect%20vm.swappiness.mp4
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