[BUG] diff calculation is slow #20734

Activity

1. natewill

   added

   bugSomething isn't workingSomething isn't working

   on Apr 2, 2026
2. github-actions

   assigned

   thdxr

   on Apr 2, 2026
3. github-actions

   added

   coreAnything pertaining to core functionality of the application (opencode server stuff)Anything pertaining to core functionality of the application (opencode server stuff)

   perfIndicates a performance issue or need for optimizationIndicates a performance issue or need for optimization

   on Apr 2, 2026
4. github-actions commented on Apr 2, 2026

   

   github-actionsbot

   on Apr 2, 2026 – with GitHub Actions

   Contributor

   More actions

   This issue might be a duplicate of existing issues. Please check:

   • [BUG} revert is very slow #20550: Also reports slow revert performance on sessions with many file changes (same root cause — snapshot diff calculation), also by the same author with a fix proposed
   • [PERF] /undo /redo really slow on larger repos and/or long histories #11486: Reports slow undo/redo on large repos, related snapshot performance issue

   If these cover the same fix, it may be worth consolidating.
5. thdxr

   assigned

   kitlangton

   and unassigned

   thdxr

   on Apr 26, 2026
6. thdxr

   removed

   bugSomething isn't workingSomething isn't working

   perfIndicates a performance issue or need for optimizationIndicates a performance issue or need for optimization

   coreAnything pertaining to core functionality of the application (opencode server stuff)Anything pertaining to core functionality of the application (opencode server stuff)

   on May 3, 2026
7. asaf92 commented on May 31, 2026

   

   asaf92

   on May 31, 2026

   More actions

   Also related:
   #29762

   This can run for dozens of minutes when tje file is large enough
8. github-actions commented on Jul 31, 2026

   

   github-actionsbot

   on Jul 31, 2026 – with GitHub Actions

   Contributor

   More actions

   To stay organized issues are automatically closed after 60 days of no activity. If the issue is still relevant please open a new one.
9. github-actions

   closed this as not plannedon Jul 31, 2026