High CPU and RAM usage when navigating linux kernel sources - Githubissues

MaskRay / ccls

C/C++/ObjC language server supporting cross references, hierarchies, completion and semantic highlighting

Apache License 2.0

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High CPU and RAM usage when navigating linux kernel sources #887

Open yangxingwu opened 2 years ago

yangxingwu commented 2 years ago

Observed behavior

ccls uses a extremely high CPU and RAM (nearly about 2GB) and killed by out-of-memory.

Expected behavior

limit the mount of available memory.

Steps to reproduce

git clone --depth 1 git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
cd linux
open a file

System information

ccls version: installed by nvim-lsp-installer
clang version 13.0.0 (https://github.com/llvm/llvm-project/ 24c8eaec9467b2aaf70b0db33a4e4dd415139a50)
OS: Ubuntu 22.04 LTS
Editor: neovim
Language client (and version): neovim v0.7.0

stelro commented 2 years ago

I have noticed the same while loading and navigating the llvm project. It looks like ccls executes multiple threads and all of the try to access/write to /tmp/ccls.logs, which spice the CPU percentage to 100%.