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[DevTools Bug]: Excessive CPU Usage | GoodFirstPicks

[DevTools Bug]: Excessive CPU Usage

facebook/react 10 comments 1mo ago
View on GitHub
highopenScope: unclearSkill match: maybeReactJavaScriptTypeScript

Why this is a good first issue

Intermittent CPU usage issue with unclear repro steps and potential deadlock in service worker.

AI Summary

The issue involves excessive CPU usage caused by React DevTools, even after closing all browser tabs. The problem appears intermittent and may be related to a deadlock in the service worker. The lack of clear repro steps and the complexity of debugging service worker behavior make this a challenging issue to address.

Issue Description

Website or app

Happens even after all tabs are closed

Repro steps

I don't have clear repro steps yet. Occasionally I will notice that Chrome is using 170%-200% CPU. I close all my tabs, and it continues. Then I open the extensions management page and disable react devtools. This immediately fixes the problem. Re-enabling the extension does not re-engage the high cpu issue.

How often does this bug happen?

Sometimes

DevTools package (automated)

No response

DevTools version (automated)

No response

Error message (automated)

No response

Error call stack (automated)

No response

Error component stack (automated)

No response

GitHub query string (automated)

No response

GitHub Labels

Type: BugStatus: UnconfirmedComponent: Developer Tools

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Risk Flags

  • no repro steps
  • intermittent issue
  • potential deadlock
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Details

Points10 pts
Difficultyhigh
Scopeunclear
Skill Matchmaybe
Test Focusedno