gemini-cli - 💡(How to fix) Fix Repeated fatal error allocatesegment [1 comments, 2 participants]

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google-gemini/gemini-cli#24925Fetched 2026-04-09 08:17:20
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Error Message

Reported repeatedly encountering the fatal error externalentitytable::allocatesegment allocation failed process out of memory, sometimes when the CLI was idle or typing, with one instance traced to an absurdly large base64 JSON tool output.

Code Example

> /about
# paste output here
RAW_BUFFERClick to expand / collapse

What happened?

Reported repeatedly encountering the fatal error externalentitytable::allocatesegment allocation failed process out of memory, sometimes when the CLI was idle or typing, with one instance traced to an absurdly large base64 JSON tool output.

See the Internal Gemini CLI Issues list

What did you expect to happen?

Not to OOM

Client information

<details> <summary>Client Information</summary>

Run gemini to enter the interactive CLI, then run the /about command.

> /about
# paste output here
</details>

Login information

No response

Anything else we need to know?

No response

extent analysis

TL;DR

The most likely fix involves addressing the memory allocation issue in the external entity table, potentially by optimizing the handling of large base64 JSON outputs.

Guidance

  • Investigate the externalentitytable::allocatesegment allocation failure to determine if it's related to the large base64 JSON tool output, and consider optimizing or limiting the output size.
  • Review the Internal Gemini CLI Issues list for any known problems or workarounds related to memory allocation or large output handling.
  • Consider adding memory usage monitoring or logging to help identify patterns or triggers for the out-of-memory errors.
  • Look into potential configuration options or command-line flags that could help mitigate the memory allocation issues.

Example

No specific code snippet can be provided without more context, but optimizing the handling of large base64 JSON outputs might involve streaming or chunking the output instead of loading it all into memory at once.

Notes

The provided information lacks specific technical details about the externalentitytable and its allocation mechanisms, so the suggested steps are somewhat generic and may require further investigation to yield a concrete solution.

Recommendation

Apply workaround: The issue seems to be related to a specific scenario (large base64 JSON output), so applying a workaround to handle such cases might be a more feasible short-term solution than attempting to fix the underlying memory allocation issue without more information.

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