ice marked every transmitted packet RS and recorded every last descriptor in its report-status queue. Hardware therefore wrote descriptor status for every packet, and the driver traversed every packet while reclaiming completed descriptors. iflib marks selected packets with IPI_TX_INTR as completion checkpoints. It forces a checkpoint as deferred work or ring pressure grows. Retain EOP on every packet, but set RS and record the descriptor only at those checkpoints. DPDK uses the same sparse-RS design and defaults tx_rs_thresh to 32. Let iflib choose the adaptive interval for FreeBSD. This reduces PCIe and memory traffic while preserving bounded descriptor reclamation. Validated on an E810-XXV in an A-B-A test with five matched four-stream, TSO-disabled transmit runs per phase. Median throughput was 9.413, 9.413, and 9.414 Gbps. Median whole-system CPU was 21.54%, 17.75%, and 21.62%, respectively. The candidate used less system CPU than both exact-baseline phases in every pair. Interrupt rate was unchanged, no transmit watchdog fired, and normal TSO traffic remained line-rate. DTrace confirmed that only iflib-selected packet-final descriptors carried RS after the change. The effect should be more profound at 200Gbps but my DUT is network limited. Reviewed by: gallatin MFC after: 2 weeks Sponsored by: BBOX.io Differential Revision: https://reviews.freebsd.org/D58910