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Severe slowdown in interface after extended ssh session #13043

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opened 2026-01-31 03:32:09 +00:00 by claunia · 2 comments
claunia commented 2026-01-31 03:32:09 +00:00
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Originally created by @BryceEakin on GitHub (Mar 15, 2021).

Environment

Windows build number: Microsoft Windows [Version 10.0.19041.867]
Windows Terminal version (if applicable): 1.6.10571.0

Any other software?  OpenSSH_for_Windows_7.7p1, LibreSSL 2.6.5

Steps to reproduce

Using the windows command line, create a ssh session with a remote ubuntu server including port forwarding (-L option), and monitor a long-running process with large quantities of printing to the terminal over ~3 days (from a process displaying through a remote screen if that's relevant).

Windows Feedback link for diagnostic data: https://aka.ms/AAbj0dj

Expected behavior

Windows Terminal continues to respond normally.

Actual behavior

All inputs to Terminal (mouse, keyboard, touch) across the core interface as well as all active terminal tabs slow down dramatically. Keypresses take from 0.5-1 second to respond (per key press), mouse input takes 2+ seconds for each input including hover, click, etc.

Attempted remediation

Terminating the ssh session does not improve interface performance.

Terminating the tab (and all other previously active tabs) does not improve interface performance.

Completely closing and reopening Terminal (and thus destroying the active sessions) does restore performance.

Originally created by @BryceEakin on GitHub (Mar 15, 2021). <!-- 🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨 I ACKNOWLEDGE THE FOLLOWING BEFORE PROCEEDING: 1. If I delete this entire template and go my own path, the core team may close my issue without further explanation or engagement. 2. If I list multiple bugs/concerns in this one issue, the core team may close my issue without further explanation or engagement. 3. If I write an issue that has many duplicates, the core team may close my issue without further explanation or engagement (and without necessarily spending time to find the exact duplicate ID number). 4. If I leave the title incomplete when filing the issue, the core team may close my issue without further explanation or engagement. 5. If I file something completely blank in the body, the core team may close my issue without further explanation or engagement. All good? Then proceed! --> <!-- This bug tracker is monitored by Windows Terminal development team and other technical folks. **Important: When reporting BSODs or security issues, DO NOT attach memory dumps, logs, or traces to Github issues**. Instead, send dumps/traces to secure@microsoft.com, referencing this GitHub issue. If this is an application crash, please also provide a Feedback Hub submission link so we can find your diagnostic data on the backend. Use the category "Apps > Windows Terminal (Preview)" and choose "Share My Feedback" after submission to get the link. Please use this form and describe your issue, concisely but precisely, with as much detail as possible. --> # Environment ``` Windows build number: Microsoft Windows [Version 10.0.19041.867] Windows Terminal version (if applicable): 1.6.10571.0 Any other software? OpenSSH_for_Windows_7.7p1, LibreSSL 2.6.5 ``` # Steps to reproduce Using the windows command line, create a ssh session with a remote ubuntu server including port forwarding (-L option), and monitor a long-running process with large quantities of printing to the terminal over ~3 days (from a process displaying through a remote `screen` if that's relevant). Windows Feedback link for diagnostic data: https://aka.ms/AAbj0dj # Expected behavior Windows Terminal continues to respond normally. # Actual behavior All inputs to Terminal (mouse, keyboard, touch) across the core interface as well as all active terminal tabs slow down dramatically. Keypresses take from 0.5-1 second to respond (per key press), mouse input takes 2+ seconds for each input including hover, click, etc. # Attempted remediation Terminating the ssh session does not improve interface performance. Terminating the tab (and all other previously active tabs) does not improve interface performance. Completely closing and reopening Terminal (and thus destroying the active sessions) does restore performance.
claunia added the Resolution-Duplicate label 2026-01-31 03:32:09 +00:00
claunia commented 2026-01-31 03:32:10 +00:00
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@DHowett commented on GitHub (Mar 15, 2021):

This does not seem to be different from /dup #7710. Thanks for the report!

@DHowett commented on GitHub (Mar 15, 2021): This does not seem to be different from /dup #7710. Thanks for the report!
claunia commented 2026-01-31 03:32:10 +00:00
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@ghost commented on GitHub (Mar 15, 2021):

Hi! We've identified this issue as a duplicate of another one that already exists on this Issue Tracker. This specific instance is being closed in favor of tracking the concern over on the referenced thread. Thanks for your report!

@ghost commented on GitHub (Mar 15, 2021): Hi! We've identified this issue as a duplicate of another one that already exists on this Issue Tracker. This specific instance is being closed in favor of tracking the concern over on the referenced thread. Thanks for your report!
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Reference: starred/terminal#13043
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