Inserting text makes VS Code unusably slow
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- Dominant language
- TypeScript
- Stars
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- Forks
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Description
Describe the bug
Inserting text makes VS Code unusably slow
To Reproduce
Steps to reproduce the behavior:
- Press i to enter insert mode
- Press two keys
- Notice that only the first key is inserted and the second key is inserted a few seconds later
- Also notice that the CPU usage increases to 100%
Expected behavior
I would expect keys to be inserted with unperceivable delay.
Screenshots
Hopefully this screenshot might help.
Environment (please complete the following information):
- Extension (VsCodeVim) version: 1.13.1
- VSCode version: 1.44.0
- OS: macOS 10.15.4
Let me know if there's any other logs I might be able to provide to help isolate the issue. I do very much like Vim, but it become unusable after this.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the delay with VSCodeVim 1.13.1 on VS Code 1.44.0 and macOS 10.15.4, following the two-key insertion steps. Use the attached performance screenshot as the available diagnostic context; done means consecutive insert-mode keystrokes are inserted without a perceptible delay or CPU usage spike.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- typescript, vscode
- Domain
- devtools, performance
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 25/100