Mitchell Hashimoto • 1/10/2026

Finding and Fixing Ghostty's Largest Memory Leak

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The article details the discovery and resolution of a significant memory leak in the Ghostty terminal emulator, where usage could balloon to 37 GB. It explains the leak's root cause in the PageList memory management system and a scrollback optimization bug, providing insight into terminal internals and the debugging process. The fix is slated for the 1.3 release.

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#debugging #memory leak #memory management
Finding and Fixing Ghostty's Largest Memory Leak

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