https://nalar.dev/tags/packetization/ Recent content in Packetization on Nalar Hugo en-us Wed, 16 Sep 2026 00:00:00 +0700 https://nalar.dev/linux-tcp-autocorking-coalesces-consecutive-small-writes/ Wed, 16 Sep 2026 00:00:00 +0700 https://nalar.dev/linux-tcp-autocorking-coalesces-consecutive-small-writes/ <p>A small TCP write does not always trigger an immediate packet transmission on Linux. With TCP autocorking enabled, the stack can defer a new small send when an earlier packet from the same flow is still waiting in a qdisc or device transmit queue, giving a following write a chance to join the pending data.</p> <p>The mechanism targets packet count rather than application-visible buffering semantics. A successful <code>write()</code> or <code>sendmsg()</code> still reports bytes accepted by the socket; autocorking influences when queued bytes advance into transmission.</p>