High CPU usage

[dudekgrzegorz]

Type: Performance Issue

1. Install the extension (Language Support for Java(TM) by Red Hat)
2. Open the Trino project: https://github.com/trinodb/trino in VSCode
3. Extension causes high CPU usage. This may continue indefinetly or stop after 10-15 min. Happens every time after rebooting the PC or invoking Reload Window command.

Extension version: 1.38.0
VS Code version: Code 1.96.2 (fabdb6a30b49f79a7aba0f2ad9df9b399473380f, 2024-12-19T10:22:47.216Z)
OS version: Windows_NT x64 10.0.19045
Modes:
Remote OS version: Linux x64 5.15.0-130-generic
Remote OS version: Linux x64 5.15.0-130-generic

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz (8 x 4000)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: enabled_on direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_graphite: disabled_off video_decode: enabled video_encode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off
Load (avg)	undefined
Memory (System)	31.93GB (21.64GB free)
Process Argv	--crash-reporter-id ee416978-e863-45e2-86e7-6e5dc1a7ddfd
Screen Reader	no
VM	0%

Item	Value
Remote	SSH: workstation
OS	Linux x64 5.15.0-130-generic
CPUs	13th Gen Intel(R) Core(TM) i9-13900K (32 x 5417)
Memory (System)	62.54GB (58.34GB free)
VM	0%

Item	Value
Remote	SSH: workstation
OS	Linux x64 5.15.0-130-generic
CPUs	13th Gen Intel(R) Core(TM) i9-13900K (32 x 4912)
Memory (System)	62.54GB (58.31GB free)
VM	0%

Workspace Info

|  Remote: SSH: workstation|    Folder (<redacted>): 1262 files|      File types: pkl(1254) json(2) md(2) py(1)
|      Conf files: launch.json(1) settings.json(1)
|      Launch Configs: debugpy
|  Remote: SSH: workstation|    Folder (<redacted>): more than 26032 files|      File types: class(7245) jar(6993) java(4534) xml(51) json(34) lst(24)
|                  pem(22) sql(22) txt(21) properties(19)
|      Conf files: github-actions(8) launch.json(1) settings.json(1)
|                  tasks.json(1) dockerfile(1)
|      Launch Configs: java(2);

A/B Experiments

vsliv368:30146709
vspor879:30202332
vspor708:30202333
vspor363:30204092
vscod805:30301674
binariesv615:30325510
vsaa593cf:30376535
py29gd2263:31024239
c4g48928:30535728
azure-dev_surveyone:30548225
962ge761:30959799
pythonnoceb:30805159
pythonmypyd1:30879173
h48ei257:31000450
pythontbext0:30879054
cppperfnew:31000557
dsvsc020:30976470
pythonait:31006305
dsvsc021:30996838
dvdeprecation:31068756
dwnewjupytercf:31046870
nativerepl1:31139838
pythonrstrctxt:31112756
nativeloc1:31192215
cf971741:31144450
iacca1:31171482
notype1:31157159
5fd0e150:31155592
dwcopilot:31170013
stablechunks:31184530
6074i472:31201624
dwoutputs:31217127

[snjeza]

@dudekgrzegorz Could you try the following:

1. Install VS Code pre-release

$ git clone [email protected]:trinodb/trino.git
$ cd trino
$ ./mvnw clean verify -DskipTests 

2. add

 "java.jdt.ls.vmargs": "-XX:+UseParallelGC -XX:GCTimeRatio=4 -XX:AdaptiveSizePolicyWeight=90 -Dsun.zip.disableMemoryMapping=true -Xmx6G -Xms512m -Xlog:disable",
 "java.gradle.buildServer.enabled": "off",

to your settings.json
3. start VS Code
4. wait for the build to finish
5. reload the VS Code window -it lasts less than 10 seconds on my machine