openclaw - 💡(How to fix) Fix MCP进程泄漏：gateway session结束时未清理vibe-trading-mcp子进程 [2 comments, 3 participants]

TL;DR

Calling disposeSessionMcpRuntime() when a session ends is likely to fix the issue of accumulating zombie processes.

Guidance

• Review the session-reset-service.ts file to ensure that disposeSessionMcpRuntime() is called when a session ends, specifically in the emitGatewaySessionEndPluginHook function.
• Verify that the disposeSession() function in pi-bundle-mcp-runtime.ts correctly cleans up the transport/client and kills the child process.
• Check the agent-via-gateway.ts file to see if the cleanupBundleMcpOnRunEnd option can be modified to work with remote sessions.
• Test the changes by running the gateway and verifying that the child processes are properly cleaned up after a session ends.

Example

// In session-reset-service.ts
emitGatewaySessionEndPluginHook(session) {
  // ...
  disposeSessionMcpRuntime(session);
}

Notes

The fix may require modifications to the OpenClaw Gateway code, specifically in the session-reset-service.ts and pi-bundle-mcp-runtime.ts files. It's essential to test the changes thoroughly to ensure that the child processes are properly cleaned up.

Recommendation

Apply the workaround by calling disposeSessionMcpRuntime() when a session ends, as this is the most direct solution to the problem. This should prevent the accumulation of zombie processes and reduce resource waste.