Possibly memory leak in macOS network request stack

5 points

5 years ago

I have written an application for macOS that is dealing with 50-100 network requests per second and the memory is constantly growing (reaching 1gb per day). The first version was in Swift, so I believed it was a Swift related issue and reported it here https://bugs.swift.org/browse/SR-14194. Then I decided to rewrite my application in Rust and surprisingly had the same memory issue. Same code runs fine on Linux.

Example in Rust: https://gist.github.com/telcy/b1c3a444def65dd0f1d109b6a98db0f1

Usually I try to find the issue at my end, but this seems to be out of my control. It is a bit mind boggling for me how a crucial part of an operating system leaks memory without anyone noticing.

I hope this gets some attention (and discussion) as this would mean most applications on macOS with network requests do leak memory to some extent.

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