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Rendering with tcell under WSL is slow for the first 65s #22574

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opened 2026-01-31 08:17:27 +00:00 by claunia · 2 comments
claunia commented 2026-01-31 08:17:27 +00:00
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Originally created by @lhecker on GitHub (Nov 20, 2024).

Originally assigned to: @lhecker on GitHub.

Windows Terminal version

1.23.3231.0

Windows build number

10.0.26100.0

Other Software

No response

Steps to reproduce

Under WSL run this: https://github.com/gdamore/tcell/blob/main/_demos/stress.go

Expected Behavior

No response

Actual Behavior

Initially the application runs super slow. After 65 seconds it suddenly becomes extremely fast (= the expected performance). Here you can see the transition between the two:

https://github.com/user-attachments/assets/765f5cbe-88b2-4c7e-a21c-bbdefb555687

Originally created by @lhecker on GitHub (Nov 20, 2024). Originally assigned to: @lhecker on GitHub. ### Windows Terminal version 1.23.3231.0 ### Windows build number 10.0.26100.0 ### Other Software _No response_ ### Steps to reproduce Under WSL run this: https://github.com/gdamore/tcell/blob/main/_demos/stress.go ### Expected Behavior _No response_ ### Actual Behavior Initially the application runs super slow. After 65 seconds it suddenly becomes extremely fast (= the expected performance). Here you can see the transition between the two: https://github.com/user-attachments/assets/765f5cbe-88b2-4c7e-a21c-bbdefb555687
claunia added the Issue-BugNeeds-Tag-FixProduct-TerminalProduct-ConptyPriority-2 labels 2026-01-31 08:17:28 +00:00
claunia commented 2026-01-31 08:17:28 +00:00
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@DHowett commented on GitHub (Nov 20, 2024):

Didn't you already file one of these? Or did we just talk about it

@DHowett commented on GitHub (Nov 20, 2024): Didn't you already file one of these? Or did we just talk about it
claunia commented 2026-01-31 08:17:29 +00:00
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@lhecker commented on GitHub (Nov 20, 2024):

I only mentioned it in our meeting. This is the bug I finally filed.

@lhecker commented on GitHub (Nov 20, 2024): I only mentioned it in our meeting. This is the bug I finally filed.
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Reference: starred/terminal#22574
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