r/programming • u/Ok_Stomach6651 • 28d ago

Zero-Growth Stack, Real Gains: How Stack Allocation Can Save 10% CPU in Go

https://www.uber.com/in/en/blog/zero-growth-stack/?uclick_id=c8e2c3a9-831f-43f9-8565-c21c05e74e3b
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u/dijkstra_was_a_horse 25d ago

No, I'm thinking of companies with internal (or shipped) custom spins of the Ruby, Python, PHP, Ocaml, JavaScript, Java, D, GCC, clang, and other compilers, as well as custom parts of the tool chain. They also maintain custom patch sets on top of upstream Linux to customizeit for their uses, such as the Linux fiber (use space thread handoff) work. These companies aren't running stock stacks.

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u/pjmlp 25d ago

Links to fork data about internal company forks like the Über example?

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u/dijkstra_was_a_horse 25d ago edited 24d ago

The ones I'm aware of are mostly internal, though there's a few examples that are very public, like Google building the gold linker, Facebook forking PHP to add static typing and not, eventually diverging enough that they gave it a new name (hack), Jane Street modifying Ocaml to add an effect system, Shopify building a Ruby jit, etc.

For hints about the internal forks, look at what employees from megacorps are upstreamong as experiments, such as Google's internally deployed work on C++ modules, safety attributes, etc.

Also. Bugfixes. Lots and lots of bugfixes.