SERVER-115974 gave clangd a 4GB memory limit in an attempt to prevent OOMs from clangd. I've found that this maximum is quite limiting as it causes clangd to use a large amount of swap, making it extremely slow. When I edit clang_vscode.sh locally to give clangd more memory (I tried 16GB for MemoryHigh and 24GB for MemoryMax), clangd immediately becomes much faster and useable again. The result however is a persistent change that git tracks that I don't want to commit (presumably not everyone wants this setting enabled).

This ticket is an ask for the ability to configure these memory limits in a local config file that is ignored by git.