Rust LSP freezes pc

[sumit-modak]

When a pretty large dioxus crate is opened, e.g. https://github.com/DioxusLabs/docsite rust-analyzer completely freezes the whole pc, the cpu and memory usage exceeds upto its limit (I have 12 CPUs and 7.11 GiB of RAM). Even if I accidentally open a file from other terminal instance I have to restart my pc again. Using rust-analyzer with such dioxus crate is impossible (atleast in my pc). I hope there would be a way to fix it.

I tried opening btop while rust-analyzer is running, there were more than 8-9 rustc instances running parallelly and each of them was taking around 200MB of RAM on an average.

[RoloEdits]

Are you using the default settings for rust-analyzer? I had an issue before when using the cargo lints where it created a fork bomb.

[sumit-modak]

Yes, I don't know how to configure it

[RoloEdits]

They recently switched to a new crate for incremental compiling, salsa, and there is an open issue there for excessive memory usage: rust-lang/rust-analyzer#19402

[sumit-modak]

can you share you share your config

[RoloEdits]

I just change to use clippy and enable the pedantic and nursery lints.

[language-server.rust-analyzer]
config.check.command = "clippy"
config.check.extraArgs = ["--", "-W", "clippy::pedantic", "-W", "clippy::nursery"]

But this would only increase memory usage. Id recommend just keeping it to check if you are having memory issues. Definitely the most lightweight form of rust-analyzer.