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cpptools-srv stuck at 100% CPU, blocking VScode CoPilot #12750
Description
Environment
- OS and Version: Ubuntu20.04
- VS Code Version: 1.93.1
- C/C++ Extension Version: v1.22.4 (pre-release)
- If using SSH remote, specify OS of remote machine:
Bug Summary and Steps to Reproduce
Bug Summary:
Laptop heats up, fan goes to 100% when using VScode. Inline copilot symbol (yellow stars) disappeared.
Process cpptools-srv is at 100% for 30minutes already.
Steps to reproduce:
Depends on my codebase / branch. If needed, I can share a link.
But I would prefer instead some debug logging / insight which file it is having so much trouble with.
Expected behavior:
No laptop overheating. Proper copilot function.
Configuration and Logs
Configurations in c_cpp_properties.json:
{
"configurations": [
{
"name": "Linux",
"includePath": [
"${workspaceFolder}/**"
],
"defines": [],
"compilerPath": "/usr/bin/gcc",
"cStandard": "c11",
"cppStandard": "c++17",
"intelliSenseMode": "gcc-x64"
}
],
"version": 4
}
-------- Diagnostics - 9/22/2024, 3:05:02 PM
Version: 1.22.4
Current Configuration:
{
"name": "Linux",
"includePath": [
"/home/jan/github/MRA-components/**"
],
"defines": [],
"compilerPath": "/usr/bin/gcc",
"cStandard": "c11",
"cppStandard": "c++17",
"intelliSenseMode": "gcc-x64",
"compilerPathIsExplicit": true,
"cStandardIsExplicit": true,
"cppStandardIsExplicit": true,
"intelliSenseModeIsExplicit": true,
"compilerPathInCppPropertiesJson": "/usr/bin/gcc",
"mergeConfigurations": false,
"browse": {
"path": [
"myredactedrepo/**",
"${workspaceFolder}"
],
"limitSymbolsToIncludedHeaders": true
}
}
Modified Settings:
{
"C_Cpp.intelliSenseEngine": "Tag Parser",
"C_Cpp.intelliSenseCacheSize": 0,
"C_Cpp.loggingLevel": "Debug",
"C_Cpp.updateChannel": "Insiders"
}
Additional Tracked Settings:
{
"editorTabSize": 4,
"editorInsertSpaces": true,
"editorAutoClosingBrackets": "languageDefined",
"filesEncoding": "utf8",
"filesAssociations": {
"*.inc": "cpp",
"cctype": "cpp",
"clocale": "cpp",
"cmath": "cpp",
"csetjmp": "cpp",
"csignal": "cpp",
"cstdarg": "cpp",
"cstddef": "cpp",
"cstdio": "cpp",
"cstdlib": "cpp",
"cstring": "cpp",
"ctime": "cpp",
"cwchar": "cpp",
"cwctype": "cpp",
"*.ipp": "cpp",
"any": "cpp",
"array": "cpp",
"atomic": "cpp",
"hash_map": "cpp",
"hash_set": "cpp",
"strstream": "cpp",
"*.tcc": "cpp",
"bitset": "cpp",
"cfenv": "cpp",
"charconv": "cpp",
"chrono": "cpp",
"cinttypes": "cpp",
"codecvt": "cpp",
"complex": "cpp",
"condition_variable": "cpp",
"cstdint": "cpp",
"deque": "cpp",
"forward_list": "cpp",
"list": "cpp",
"unordered_map": "cpp",
"unordered_set": "cpp",
"vector": "cpp",
"exception": "cpp",
"algorithm": "cpp",
"functional": "cpp",
"iterator": "cpp",
"map": "cpp",
"memory": "cpp",
"memory_resource": "cpp",
"numeric": "cpp",
"optional": "cpp",
"random": "cpp",
"ratio": "cpp",
"regex": "cpp",
"set": "cpp",
"string": "cpp",
"string_view": "cpp",
"system_error": "cpp",
"tuple": "cpp",
"type_traits": "cpp",
"utility": "cpp",
"fstream": "cpp",
"future": "cpp",
"initializer_list": "cpp",
"iomanip": "cpp",
"iosfwd": "cpp",
"iostream": "cpp",
"istream": "cpp",
"limits": "cpp",
"mutex": "cpp",
"new": "cpp",
"ostream": "cpp",
"scoped_allocator": "cpp",
"shared_mutex": "cpp",
"sstream": "cpp",
"stdexcept": "cpp",
"streambuf": "cpp",
"thread": "cpp",
"typeindex": "cpp",
"typeinfo": "cpp",
"valarray": "cpp",
"variant": "cpp",
"bit": "cpp"
},
"filesExclude": {
"**/.git": true,
"**/.svn": true,
"**/.hg": true,
"**/CVS": true,
"**/.DS_Store": true,
"**/Thumbs.db": true
},
"filesAutoSaveAfterDelay": false,
"editorInlayHintsEnabled": true,
"editorParameterHintsEnabled": true,
"searchExclude": {
"**/node_modules": true,
"**/bower_components": true,
"**/*.code-search": true
},
"workbenchSettingsEditor": "ui"
}
cpptools version (native): 1.22.4.0
No active translation units.
------- Workspace parsing diagnostics -------
Number of files discovered (not excluded): 495041
Number of files parsed: 27317
### Other Extensions
_No response_
### Additional context
Tried various settings already. Tried debugger but could not see anything. (May also be my fault for not being expert enough.)
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sean-mcmanus commentedon Sep 23, 2024
With
"C_Cpp.intelliSenseEngine": "Tag Parser",set, cpptools-srv is not supposed to be launched. I'm guessing the copilot call back code is not checking for that setting and trying to launch cpptools-srv when it shouldn't. Changing Cpp.intelliSenseEngine to "default" might fix it, not sure yet.sean-mcmanus commentedon Sep 23, 2024
I'm not able to repro this. I don't see a cpptools-srv launched when C_Cpp.intelliSenseEngine is "Tag Parser". I'll ask if anyone else on our team is able to repro it.
janfeitsma commentedon Sep 24, 2024
Thanks Sean.
I kicked out all the custom C_Cpp settings which I gathered over the past weeks trying to debug this specifically:
Had a closer look at the ps tree, I noticed two versions of cpptools running:
1.22.4and1.22.3. Now I wonder: maybe cpptools-srv was somehow associated to the older one. So I did a reboot.Soon after restarting vscode and resuming development, cpptools-srv appeared again. Running 100% CPU for a while.
Problem persists.
Maybe relevant to mention I use bazel build.
What other info should I provide?
sean-mcmanus commentedon Dec 14, 2024
janfeitsma We can fix it so it doesn't launch the cpptools-srv process (#13058). I'm guessing I might not have reproed it earlier due to some Copilot issue may not have triggered the getIncludes request.
sean-mcmanus commentedon Jan 10, 2025
janfeitsma Fixed with https://github.com/microsoft/vscode-cpptools/releases/tag/v1.23.3 (pre-release).