Copy-paste takes too long in WSL 【1s ~ 5min】

[mozhuanzuojing]

[provide a description of the issue]
In the new class in WSL, i often need to wait 5 seconds to more than 5 minutes for copy-paste operations. Particularly affects work.

Environment

• Operating System: Win11
• Remote Operating System: Ubuntu22.04
• JDK version: 17
• Visual Studio Code version: 1.81.0
• Java extension version: 1.20.0 ~ 1.21.0

Steps To Reproduce

1. Create a new class and copy and paste it multiple times
   
   

Current Result

copy and paste wait 1s ~ 5min

Expected Result

Copy and paste is done in 1 second

Additional Informations

The work plan for the past few days is not finished, SOS

[benzman81]

same here

[mozhuanzuojing]

Quick Fix... Sometimes it's slow.

here is stack

Ctrl + 1 辅助stack1.txt

[mozhuanzuojing]

Copy and paste 堆栈 stack2.txt

[mozhuanzuojing]

do you need jfr？

[and-y]

Have the same problem with the latest version 1.21.0.
With the version 1.18.0 copy/paste is fast as expected.

[mozhuanzuojing]

Ctrl + 1 [jfr] .zip

[mozhuanzuojing]

copy & paste [jfr] .zip

[mozhuanzuojing]

copy & paste 【jfr】【1min】.zip
copy & paste 【jfr】 【2min】.zip

[nickzhums]

@testforstephen @jdneo any idea for this issue? @mozhuanzuojing is one of our dedicated user from the past, and it seems like several users have ran into this problem.

[testforstephen]

Quick Fix... Sometimes it's slow.

here is stack

Ctrl + 1 辅助stack1.txt

After a look at the callstack, the code action of Introduce parameter uses up all the available threads from the common ThreadPool that is shared by delegate command. This causes the paste command java.edit.handlePasteEvent to be delayed and slow to respond. This seems to be the same issue as reported in eclipse-jdtls/eclipse.jdt.ls#2799.

To mitigate this issue, I can think of two possible solutions:

• Handle the paste event synchronously in the main thread, instead of asynchronously with a thread pool. This would avoid the competition for threads. (This is similar to how the code completion works.)
• Optimize the performance of the code action for Introduce parameter, so that it does not consume too many threads or take too long to execute.

[fbricon]

You can disable vscode-java's special paste handling with:

"[java]": {
   "editor.pasteAs.enabled": false
},

[mozhuanzuojing]

You can disable vscode-java's special paste handling with:

"[java]": {
   "editor.pasteAs.enabled": false
},

thanks，i will try.