4 ms·

For some reason VS Code will hang and not allow interaction or input for around 25-30 seconds. I have noticed this mostly when deleting a Python file and someti

by brylie 6y ago

For some reason VS Code will hang and not allow interaction or input for around 25-30 seconds. I have noticed this mostly when deleting a Python file and sometimes while editing Python. How might I debug whatever is blocking the main thread to find out if it is the language server or something else?

brundolf 6y ago
That's crazy. I use it on a small-medium Python project (100-200 files) every day and have never had any performance problems whatsoever. I did use the MyPy language server at first, which would take a few seconds to update type errors because MyPy wasn't designed for IDEs. But the UI thread remained responsive during that time. Eventually I switched to the Pylance language server which doesn't do a perfect job with checks, but gives feedback instantly. How big is your project, and how big are your files? I've had massive JSON files (100MB or so) cause some slight jank in the UI, but that's about the only example I can think of.
Fire-Dragon-DoL 6y ago
I have the same problem, but I think it's an extension issue. On Ubuntu it happens, but with same extensions on macOS is not happening. I wish i could debug it. In my case it happens only when deleting files from the source tree
rebornix 6y ago
* Firstly, may I ask are you using Vim extension? * Can you please follow instructions listed here https://github.com/microsoft/vscode/wiki/Performance-Issues#profiling-the-renderer-process https://github.com/microsoft/vscode/wiki/Performance-Issues#... to profile the renderer process when that happens (more accurately start the profile before the hang happens and stop after). Usually extension should not block the typing so it might be something bad in the core. Once you have it captured, please file an issue Thanks in advance for the help.

4 ms·

For some reason VS Code will hang and not allow interaction or input for around 25-30 seconds. I have noticed this mostly when deleting a Python file and someti

by brylie 6y ago

brundolf 6y ago
That's crazy. I use it on a small-medium Python project (100-200 files) every day and have never had any performance problems whatsoever. I did use the MyPy language server at first, which would take a few seconds to update type errors because MyPy wasn't designed for IDEs. But the UI thread remained responsive during that time. Eventually I switched to the Pylance language server which doesn't do a perfect job with checks, but gives feedback instantly. How big is your project, and how big are your files? I've had massive JSON files (100MB or so) cause some slight jank in the UI, but that's about the only example I can think of.
Fire-Dragon-DoL 6y ago
I have the same problem, but I think it's an extension issue. On Ubuntu it happens, but with same extensions on macOS is not happening. I wish i could debug it. In my case it happens only when deleting files from the source tree
rebornix 6y ago
* Firstly, may I ask are you using Vim extension? * Can you please follow instructions listed here https://github.com/microsoft/vscode/wiki/Performance-Issues#profiling-the-renderer-process https://github.com/microsoft/vscode/wiki/Performance-Issues#... to profile the renderer process when that happens (more accurately start the profile before the hang happens and stop after). Usually extension should not block the typing so it might be something bad in the core. Once you have it captured, please file an issue Thanks in advance for the help.