LSP hangs when requested workspace symbols in a workspace with a large number of files

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#799 0 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
typescript
Domain
performance, tooling

Research direction

Start by reproducing the workspace-symbol request in a workspace with roughly 360,719 files, using the latest Quarto extension and version 1.116.0 for comparison. Trace the LSP process during the request and use the reported CPU saturation and symbol-dialog hang as the completion criteria.

Written by the indexing model from the issue text.

Description

bug LSP

Initially reported in https://github.com/posit-dev/positron/issues/9024 by @rmflight.

When a workspace contains a very large amount of files (I tested with a project that has 360719 files), triggering workspace symbols causes the LSP process to consume 100% CPU for a long while. The symbol dialog hangs during that time.

I've reproduced this with the latest version of the quarto extension and an old one 1.116.0.

https://github.com/user-attachments/assets/0d7621a5-86c2-4df5-9402-653a5a4b96e9

Dominant language
TypeScript
Stars
645
Forks
62
Avg merge
17h 42m
Merged PRs (30d)
13

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