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[Bug] High CPU and Memory usage on macOS ARM64 #30126
Description
Bug Description
opencode consumes extremely high CPU (100%+) and memory (~2.5GB) on macOS ARM64 after starting.
Environment
- macOS: 15.7.4 (24G517)
- Chip: Apple Silicon (arm64)
- opencode version: v1.15.13
Steps to Reproduce
- Start opencode
- Wait a few seconds or send a message ("hi")
- Process becomes unresponsive with high resource usage
Process Status
chenstephen 113.0% CPU, 15.4% memory (2.5GB) for opencode main process
Expected Behavior
opencode should consume reasonable resources (< 10% CPU, < 500MB memory).
Additional Context
This issue also occurred on v1.15.12. The issue appears consistently when running opencode on this MacBook. Please advise if any logs or further information is needed.
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github-actions commentedon May 31, 2026
This issue might be a duplicate of existing issues. Please check:
If your issue is already covered, please add a +1 or additional context there instead.
shuans commentedon Jun 1, 2026
+1
itxtoledo commentedon Jun 1, 2026
+1
asaf92 commentedon Jun 2, 2026
Does it happen in an empty session? Some sessions (ones with large diffs after tool call block) can behave like that even when resumed (opencode -s ...)
github-actions commentedon Aug 2, 2026
To stay organized issues are automatically closed after 60 days of no activity. If the issue is still relevant please open a new one.