Trying to enable oom_killer

General system Kernel, boot, graphics & hardware
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Trying to enable oom_killer:

$ sudo -s sysctl -w vm.oom-kill=1
sysctl: cannot stat /proc/sys/vm/oom-kill: No such file or directory
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Check this out:
https://man.archlinux.org/man/systemd-oomd.8

And this:
https://wiki.archlinux.org/title/improving_performance#RAM,_swap_and_OOM_handling

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Why would this even be needed? I’m not sure i understand why a system would be out of memory in the user space? How does this happen? I mean i have 32 GB memory and powerful CPU and fast hardware. It doesn’t make any sense to me why it happens. Older slower hardware?

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The current one I’m on only has 4 Gigs… minus shared graphics memory.

Firefox is always getting close… it’s why I’m just trying out Falkon as a leaner webbrowser, and it is behaving nicer to CPU & Memory resources, even on YT.

:rofl:

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Ooh Ouch! Yes that might suck the life out of it! :rofl:

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I’d be careful with systemd-oom. Ubuntu tried making it default in 22.04 and users reported all sorts of weird crashes and hangs. Do a web search to find further details.

I believe it’s more for servers, infrastructure and what not, not really meant for desktops, laptops, and tablets.

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I am wondering if/how much the ram usage is reduced in surf, it’s minimalistic:

https://surf.suckless.org/

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You just need a memory leak in some long running process. Here is a minimal example you can try for yourself, if you want to see how OOM looks like:

Code 
/*****************************************************************************
 * leak.cpp                                                                  *
 *                                                                           *
 * This program creates a nasty memory leak that is likely to crash any Linux*
 * computer. Comes with NO WARRANTY. Use at your own risk.                   *
 *                                                                           *
 * To compile, run:                                                          *
 * g++ leak.cpp -o leak                                                      *
 *****************************************************************************/ 
int main() {
  while (true) {
    long double* p = new long double[1000];
  }
}

If you’re going to execute this, it would be a good idea to have the Magic SysRq Key enabled, because you’re going to need to reboot somehow.

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Will this help me with MY memory leaks?

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Perhaps, if you put in on a papersheet under your pillow, whilst having it read by an avater on your iphone over night… it mighty might.

:laughing:

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I just keep repeating … “You will not forget!”

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Nah, that mantra is simply negative. The outcome of that will be “You will . forget!” Affirmations etc. only work w. a positive wording, so you need to rephrase it:
“You will keep it in mind!”

The more complex “it” becomes, the more lines of iterations through “it”'s sentient parts will be needed!

:rofl:

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In other words i might not forget. :laughing:

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