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Memory leak in terminal support #111562

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solomatov opened this issue Dec 1, 2020 · 4 comments
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Memory leak in terminal support #111562

solomatov opened this issue Dec 1, 2020 · 4 comments
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@meganrogge
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author-verification-requested Issues potentially verifiable by issue author bug Issue identified by VS Code Team member as probable bug confirmed Issue has been confirmed by VS Code Team member insiders-released Patch has been released in VS Code Insiders terminal General terminal issues that don't fall under another label verified Verification succeeded
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January 2021

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@solomatov
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  • VSCode Version: 1.51.1
  • OS Version: Darwin x64 19.6.0

Steps to Reproduce:

  1. Open a terminal
  2. Type in the following: while true; do echo test; done
  3. Observe memory consumption: it will increase, and eventually the VS Code will die with a OOM

Does this issue occur when all extensions are disabled?: No

I investigated why it happened, and root caused it to a memory leak in xterm.js

It's possible to work around this issue by getting a buffer once, on xterm object creation, and using this object instead of a terminal.buffer. I checked, and it fixed the above problem. The memory consumption is stable, and vs code doesn't die.
@meganrogge meganrogge added the terminal General terminal issues that don't fall under another label label Dec 2, 2020
@kieferrm kieferrm added this to the December/January 2021 milestone Dec 11, 2020
@meganrogge meganrogge mentioned this issue Dec 17, 2020
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@meganrogge meganrogge added bug Issue identified by VS Code Team member as probable bug confirmed Issue has been confirmed by VS Code Team member labels Dec 17, 2020
@meganrogge
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meganrogge commented Dec 17, 2020 •
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I'm not seeing this happen in local VS code windows - only remote. Is that what you're seeing too @solomatov ?

@solomatov
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solomatov commented Dec 17, 2020 •
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@meganrogge I had it in both cases, but in case of the remote it was showing much faster, but your version, and configuration is likely different from mine.

@meganrogge meganrogge mentioned this issue Dec 18, 2020
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@kieferrm kieferrm mentioned this issue Dec 21, 2020
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@meganrogge
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meganrogge commented Jan 4, 2021 •
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fixing this upstream in Xterm.js and tweaked in this one

@Tyriar Tyriar mentioned this issue Jan 4, 2021
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@Tyriar Tyriar closed this as completed in e8edff5 Jan 6, 2021
@meganrogge meganrogge added the author-verification-requested Issues potentially verifiable by issue author label Jan 27, 2021
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This bug has been fixed in to the latest release of VS Code Insiders!

@solomatov, you can help us out by confirming things are working as expected in the latest Insiders release. If things look good, please leave a comment with the text /verified to let us know. If not, please ensure you're on version 1a9dd75 of Insiders (today's or later - you can use Help: About in the command palette to check), and leave a comment letting us know what isn't working as expected.

Happy Coding!

@connor4312 connor4312 added the verified Verification succeeded label Jan 29, 2021
@github-actions github-actions bot locked and limited conversation to collaborators Feb 20, 2021
lemanschik pushed a commit to code-oss-dev/code that referenced this issue Nov 25, 2022
@Tyriar
xterm@4.10.0-beta.39
17b1f63 
(includes from 4.9.0)
Diff: xtermjs/xterm.js@3504e2e...master

Fixes microsoft#108400
Fixes microsoft#111562
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@meganrogge meganrogge

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author-verification-requested Issues potentially verifiable by issue author bug Issue identified by VS Code Team member as probable bug confirmed Issue has been confirmed by VS Code Team member insiders-released Patch has been released in VS Code Insiders terminal General terminal issues that don't fall under another label verified Verification succeeded
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only call buffer once and store it on xterm creation microsoft/vscode
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@solomatov @connor4312 @kieferrm @meganrogge and others