Re: Properly handle OOM death?

> On Mar 13, 2023, at 11:42 AM, Joe Conway <mail(at)joeconway(dot)com> wrote:
>
> On 3/13/23 15:18, Israel Brewster wrote:
>> The syslog specifically says "Memory cgroup out of memory”, if that means
>> something (this is my first exposure to cgroups, if you couldn’t
>> tell).
>
> I am not entirely sure, but without actually testing it I suspect that since memory.max = high (that is, the limit is whatever the host has available) the OOM kill is technically a cgroup OOM kill even though it is effectively a host level memory pressure event.

That would make sense.

>
> Did you try setting "vm.overcommit_memory=2"?

Yeah:

root(at)novarupta:~# sysctl -w vm.overcommit_memory=2
sysctl: setting key "vm.overcommit_memory", ignoring: Read-only file system

I’m thinking I wound up with a container rather than a full VM after all - and as such, the best solution may be to migrate to a full VM with some swap space available to avoid the issue in the first place. I’ll have to get in touch with the sys admin for that though.
---
Israel Brewster
Software Engineer
Alaska Volcano Observatory
Geophysical Institute - UAF
2156 Koyukuk Drive
Fairbanks AK 99775-7320
Work: 907-474-5172
cell: 907-328-9145

>
> --
> Joe Conway
> PostgreSQL Contributors Team
> RDS Open Source Databases
> Amazon Web Services: https://aws.amazon.com
>