On Mon, 15 Nov 2021 11:13:44 +0100 Clément Léger wrote: > Test on standard packets with UDP (iperf3 -t 100 -l 1460 -u -b 0 -c *) > - With pre-computed header: UDP TX: 33Mbit/s > - Without UDP TX: 31Mbit/s > -> 6.5% improvement > > Test on small packets with UDP (iperf3 -t 100 -l 700 -u -b 0 -c *) > - With pre-computed header: UDP TX: 15.8Mbit/s > - Without UDP TX: 16.4Mbit/s > -> 4.3% improvement Something's wrong with these numbers or I'm missing context. You say improvement in both cases yet in the latter case the new number is lower?