Ever since I tried out the AI plugins (and later removed them again), my machine totally hangs during /admin/upgrade. Not every time but approximately 80% of the time. Usually my whole EC2 instance freezes and I have to do a hard reboot through the AWS EC2 web UI. Today it hangs again. To my surp…

Thanks. I did not know that, obvious. But it is mebibyte :wink: And for others who didn’t know either :smirking_face: Mebibyte The mebibyte (symbol: MiB) is a unit of information or computer data storage. The mebibyte is closely related to the megabyte (MB). The megabyte refers to 106 …

[image] Jakke Flemming: This is a bit off topic, but I really would like to understand. Why swap, that used 200 MB, helped when there was 2 GB free RAM? I think the original problem was probably a process getting killed because the machine was out of memory (beware the OOM killer). Adding sw…

Just started yet another /admin/upgrade and had a shell open to manually call tree -h every second or so. The highest memory usage values I could find were those: $ free -h total used free shared buff/cache available Mem: 3.8Gi 3.2Gi 120Mi…

So 4 GB is just on the edge at building time, if we suppose that last screenshot tells the most stressful moment. And that is another thing I can’t understand: why others hit low memory and I, who uses a lot plugins and components, had zero issues :thinking: what makes that difference? And I used h…

@Jagster @uwe_keim please could you report the output of these commands cat /proc/sys/vm/overcommit_memory cat /sys/kernel/mm/transparent_hugepage/enabled On my systems I have # cat /proc/sys/vm/overcommit_memory 1 # cat /sys/kernel/mm/transparent_hugepage/enabled always madvise [never]

Thanks @uwe_keim - I’m going to suppose that those kernel tunables are the reason you needed to add swap, even though it didn’t seem to be used. (The same would apply if you’d needed to add loads of RAM, because the total available memory is RAM+swap.)

I can change server settings any time if you recommend to do so.

root@foorumi-hel:/var/discourse# cat /proc/sys/vm/overcommit_memory 0 root@foorumi-hel:/var/discourse# cat /sys/kernel/mm/transparent_hugepage/enabled always [madvise] never

[image] Uwe Keim: change server settings any time if you recommend I do recommend! This will fix it for future reboots (note that it overwrites files without checking the current state): echo 'sys.kernel.mm.transparent_hugepage.enabled=never' > /etc/sysctl.d/10-huge-pages.conf echo 'vm.over…

Whole machine hangs during upgrade

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uwe_keim (Uwe Keim) February 2, 2024, 9:13am 16

$ cat /proc/sys/vm/overcommit_memory
0

and

$ cat /sys/kernel/mm/transparent_hugepage/enabled
always [madvise] never

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Whole machine hangs during upgrade

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