High CPU load in vscode codex extension in recent versions on linux

Resolved 💬 2 comments Opened Apr 14, 2026 by mdcnz Closed Apr 14, 2026

What version of the IDE extension are you using?

26.5406.31014

What subscription do you have?

enterprise user

Which IDE are you using?

vscode

What platform is your computer?

Linux 6.8.0-107-generic x86_64 x86_64

What issue are you seeing?

Continuously high CPU load on codex vscode extension in recent versions.

Starts when the extension is loaded and happens continuously.

It happens without any interaction.

CPU load dropped when codex extension disabled.

The load appears to be back to normal after reverting to a prior revision:

26.5406.40811 -- high cpu

26.5406.31014 -- high cpu

26.5401.11717 -- ok

What steps can reproduce the bug?

Install the problematic versions of the codex extension in vscode.
Ensure the extension is running and interactive.
Observe continuous high cpu load.

What is the expected behavior?

The extension has low or unnoticeable CPU load.

Additional information

Normal load:

<img width="1890" height="140" alt="Image" src="https://github.com/user-attachments/assets/dfbbf493-5554-4ebc-bd2a-4860539679c5" />

High load:

<img width="1890" height="140" alt="Image" src="https://github.com/user-attachments/assets/3267ac2a-807e-4b0d-b78c-b04d5f9e5e25" />

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