High cpu usage when edit rust files! about coc-rls HOT 6 OPEN

I've experienced this issue as well when I installed rls manually according to their instructions. After I read that coc-rls can install rls for you, I ran rustup component remove rls rust-analysis rust-src and tried launching Neovim afterwards so coc-rls will prompt me to install it by itself. I don't know why and perhaps there were other factors in my setup but you should try to do the same.

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Which process cause high CPU, the node process or rust process?

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Checkout https://github.com/neoclide/coc.nvim/wiki/Debug-language-server#using-output-channel output channel to see what the server is doing.

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@chemzqm rls process get the high cpu.
also i run:
:CocCommand workspace.showOutput
but nothing show me.

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Have no idea with that, maybe try upgrade your rls.

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When I edit the .rs file, the rls loads the CPU by up to 30% for one second (on the first run). And then a maximum of 20% less than a second.. On average, the load is 2-14% (0-1% after 5 minutes 👍) when editing and 9-22% when save (or when exiting insert mode).
This is not a permanent load. Maximum 2 seconds when save (maybe thanks to SSD), then load 0%

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