Persistent overuse of system resources by rust-analyzer

Question

After limiting the number jobs in order to handle the amount of resources used by rust-analyzer it keeps using all cores so my computer ends up hanged out:

In addition, I've noticed that several processes continue to run even after stopping the rust-analyzer. Notably, it's these processes that are consuming all available cores:

...
/usr/lib/gcc/x86_64-linux-gnu/12/cc1plus -quite -I /home/c/rust-project/target/debug/build/wasm-opt-sys...
/usr/lib/gcc/x86_64-linux-gnu/12/cc1plus -quite -I rocksdb/include/ -I rocksdb/ -I rocksdb/third-party/gtest-1.8.1/fused-src/ -I snappy...
/usr/lib/gcc/x86_64-linux-gnu/12/cc1plus -quite -I rocksdb/include/ -I rocksdb/ -I rocksdb/third-party/gtest-1.8.1/fused-src/ -I snappy...
...

For reference, my laptop is equipped with 16 cores and has 16GB RAM.

Answer 1

I've realized that the more appropriate parameter for setting the number of jobs is "cargo.extraArgs", rather than "check.extraArgs". As of now, no cargo command will use more than the specified number of jobs.