Re: Performance impact of PF on APU2

Ok so I compared 6.3-release, 6.3-release+syspatches(=stable?) and the latest snapshot from October 2.

I measured iperf3 throughput between A and B, like this:
PC A <---> APU2 <---> PC B

pf rules are the one shipped by default in 6.3:

  gw# pfctl -sr                                                                  
  block return all
  pass all flags S/SA
  block return in on ! lo0 proto tcp from any to any port 6000:6010
  block return out log proto tcp all user = 55
  block return out log proto udp all user = 55

OpenBSD 6.3 RELEASE:  
  - pf enabled:  841 Mbits/sec 
  - pf disabled: 935 Mbits/sec

OpenBSD 6.3 + Syspatch:
  - pf enabled:  803 Mbits/sec
  - pf disabled: 936 Mbits/sec

OpenBSD CURRENT:
  - pf enabled: 526 Mbits/sec (541 with kern.pool_debug=0)
  - pf disabled: 934 Mbits/sec

So there is a small perf drop when applying all syspatches to 6.3 (not sure which one cause the drop),
but the performance drop SIGNIFICANTLY using the latest snapshot.

Am I missing something? (I really hope I am)