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Arch Linux Increasing Its vm.max_map_count To Help Steam Play Games & Other Software (www.phoronix.com)

submitted 11 months ago by [email protected] to c/[email protected]

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[–] [email protected] 9 points 11 months ago (1 children)

Not really it seems. Steam has raised it to the MAX_INT - 5, Fedora originally planned to do so to but held off after concerns from engineers that it could lead to situations where having too much mapped would lead to the kernel killing other processes to solve OOM situations so they settled on the number that has now also been adapted by Arch. At least, according to another Phoronix article.

[–] [email protected] 3 points 11 months ago (1 children)

Steam has raised it to the MAX_INT - 5

Now I'm interested where the 5 comes from.

[–] [email protected] 3 points 11 months ago* (last edited 11 months ago) (2 children)

I wonder too!

I'm betting on trial and error. Probably has a mysterious comment in the code, as a warning to other.

Source: I develop software and find these things are either deeply researched and analyzed scientific theory, or the result of guesswork and trial and error. At a ratio of about 95% and 5% respectively.

[–] [email protected] 4 points 10 months ago

So deeply researched was set at MAX_PERCENT - 5 ?

[–] [email protected] 4 points 10 months ago

95% being trial and error. At least where I work.