Lightning Talk: Constraining Automated Trading Risk with Linux Signals
summary
Claims that Linux signals let a control program force-stop errant automated traders, using a separate independent Control process that forks and execs each trading worker, monitors heartbeats, sends SIGINT then SIGKILL if a shutdown or cleanup doesn't complete, and relies on the kernel to enforce termination. Implementation targets thousands of concurrent instruments and processes at a firm like Optiver and proves able to pull trading in seconds to stop during release bugs, hardware failures, or exchange anomalies.
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