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SSH ControlMaster multiplexing trades per‑connection isolation for near‑instant repeat connections. This architecture note covers requirements, the minimal safe configuration, trust boundaries, operational checks, and the failure modes that should change your design.
Use SSH multiplexing (ControlMaster) to reuse a single TCP connection for multiple sessions, cutting login latency and CPU overhead. Configure ControlMaster, ControlPath, and ControlPersist in ~/.ssh/config and verify with ssh -O check.
Remote-SSH Connection Management VSCodium's Remote-SSH extension utilizes a connection pool to multiplex multiple logical channels—such as terminals, debug sessions, and file system operations—over a single SSH connection. By default, this pool maintains a maximum limit of concurrent channels. Resource Constraints and Behavior When the maximum channel limit
ssh
vscodium