Troubleshooting Defunct (Zombie) Processes on Linux

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At work (LNI) we have a tool which implements a remotely controlled RDMA agent using the OpenFabrics interface. The agent is used for compliance, interoperability, and performance testing. For quite some time we’ve had a problem where sometimes the agent hangs and then after sending SIGINT (ctrl-C or kill) the agent shows up as “defunct†with a Zombie state in the output of ps.

Link: isomerica.net

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  • Linux