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Java Intellisense/autocomplete slow/not working #1064
Description
Issue Type: Bug
After a brief period of working, the Java intellisense either stops working or takes a lot of time to load suggestions.
Extension version: 0.48.0
VS Code version: Code 1.38.1 (b37e54c98e1a74ba89e03073e5a3761284e3ffb0, 2019-09-11T13:35:15.005Z)
OS version: Windows_NT x64 10.0.18362
System Info
| Item | Value |
|---|---|
| CPUs | Intel(R) Core(TM) i5-6300U CPU @ 2.40GHz (4 x 2496) |
| GPU Status | 2d_canvas: enabled flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on native_gpu_memory_buffers: disabled_software oop_rasterization: disabled_off protected_video_decode: unavailable_off rasterization: enabled skia_deferred_display_list: disabled_off skia_renderer: disabled_off surface_synchronization: enabled_on video_decode: enabled viz_display_compositor: disabled_off webgl: enabled webgl2: enabled |
| Load (avg) | undefined |
| Memory (System) | 15.90GB (5.65GB free) |
| Process Argv | |
| Screen Reader | no |
| VM | 0% |
Reacted by Rana Ahmed and Nikita Pavlovski
Activity
snjeza commentedon Sep 17, 2019
Could you enable Java LS tracing and attach the logs from the output view (Java Language server)?
See https://github.com/redhat-developer/vscode-java/wiki/Troubleshooting#turn-on-message-tracing-between-vs-code-and-the-java-language-server
Does the issue occur when all other extensions are disabled?
devyhia commentedon Jun 11, 2020
I have the same problem. Intellisense is usually very fast; However, whenever I enable the debugger and java test runner the inntellisense slows down dramatically. For some reason, "Java Test Runner" plugin and the debugger plugin slow down the performance. Not sure how to go around debugging this.
testforstephen commentedon Jun 12, 2020
@devyhia When you observe performance issue, could you share the logs?
Below is the command to get the log.
F1 -> Java: Open Java language server log file
jaoyina commentedon Feb 1, 2021
I have the issue too, for some classes, it is too slow, it displays the auto complete list after the cursor blinks 10 times.
nikitades commentedon Mar 12, 2023
Any updates on that?
robstryker commentedon Oct 29, 2026
microsoft/vscode-java-test#832 was closed as resolved. User comments indicate very much improved behavior.