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TCP TIME_WAIT on Linux: When Closed Connections Become a Bottleneck

Why TCP TIME_WAIT survives close(), why Linux normally waits 60 seconds, and how to distinguish normal connection churn …

Sep 5, 2026 · 9 min read
Linux

What Does TCP listen() Backlog Actually Control on Linux?

Does listen() backlog control the SYN queue or accept queue? Trace Linux 6.10 behavior through somaxconn, SYN cookies, …

Aug 10, 2026 · 7 min read
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