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cpptools takes hours of CPU time per day for a project which compiles in 5 seconds

**Type: LanguageService** **Describe the bug** - OS and Version: OSX 10.15.4 - VS Code Version: 1.45.1 - C/C++ Extension Version: 0.28.1 For every C++ project, even tiny ones which compile in a few seconds, a cpptools process runs for something between 6 and 40 minutes every time I open the project and also from time to time after editing or git operations. Over the day this accumulates to many hours and estimated about 25% of the time my laptop fan runs cause of cpptools (it hardly every runs cause of compiles). Also the memory consumption of cpptools is fairly high - around 7GB is common. I guess this has to do with scanning system headers, but is still seems wasteful to spend 30 minutes on symbol analysis for a project where a release build takes 5 seconds. This is not really a bug, but to me it looks like unnecessary waste of resources. One more observation: when I delete the folder in which VSCode keeps the database (on Mac `~/Library/Application Support/VSCodium/User/workspaceStorage/`) it runs the first time "only" for 6 minutes - Intellisense is fully operational. The second time it decides to run for the same projects - about 1 hour later - it runs for 29 minutes. **Steps to reproduce** - Open any project with C files - Look at the CPU time of the cpptools process **Expected behavior** - cpptools needs less than 10x the compile time In case you cannot reproduce this (for me this happens for every C++ project every time since at least 6 months) I can of cause pr

Posted by MSoegtropIMC on May 27, 2020, 9:29 AM

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cpptools takes hours of CPU time per day for a project which compiles in 5 seconds

MSoegtropIMCMay 27, 2020, 9:29 AM

**Type: LanguageService** **Describe the bug** - OS and Version: OSX 10.15.4 - VS Code Version: 1.45.1 - C/C++ Extension Version: 0.28.1 For every C++ project, even tiny ones which compile in a few seconds, a cpptools process runs for something between 6 and 40 minutes every time I open the project and also from time to time after editing or git operations. Over the day this accumulates to many hours and estimated about 25% of the time my laptop fan runs cause of cpptools (it hardly every runs cause of compiles). Also the memory consumption of cpptools is fairly high - around 7GB is common. I guess this has to do with scanning system headers, but is still seems wasteful to spend 30 minutes on symbol analysis for a project where a release build takes 5 seconds. This is not really a bug, but to me it looks like unnecessary waste of resources. One more observation: when I delete the folder in which VSCode keeps the database (on Mac `~/Library/Application Support/VSCodium/User/workspaceStorage/`) it runs the first time "only" for 6 minutes - Intellisense is fully operational. The second time it decides to run for the same projects - about 1 hour later - it runs for 29 minutes. **Steps to reproduce** - Open any project with C files - Look at the CPU time of the cpptools process **Expected behavior** - cpptools needs less than 10x the compile time In case you cannot reproduce this (for me this happens for every C++ project every time since at least 6 months) I can of cause pr

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