IPERF3 between two interfaces on my VYOS VM (Proxmox, J1900 4-core Celron). VM is identical in config and specs, literally just swapping system image between tests.
v1.2.7:
2.90 Gbits/sec
ksoftirqd/0 using ~1% CPU
Likely limited by my host
v1.3.0-rc4:
306 Mbits/sec
ksoftirqd/0 using ~98% CPU
This is a massive performance degradation. About to test on bare metal.
Edit 1:
Same issue with baremetal. This is on an old PC with two NICs. Obviously limited by the 1 gig NICs in this test. 1.3.4 came close to line speed, but ksoftirqd was still using almost 100% CPU.
v1.2.7:
938 Mbits/sec
ksoftirqd/0 using ~3% CPU
v1.3.0-rc4:
905 Mbits/sec
ksoftirqd/0 using ~95% CPU
Edit 2:
Also can confirm the same regression in 1.3 rolling and 1.4 rolling as of today.