Ok I think I've figured out what needs to be changed however I'm not sure how to change it as OpenBSD 5.1 seems to use automatic buffering.
Following these postings:
http://forums.whirlpool.net.au/archive/481579
http://forums.whirlpool.net.au/forum...s.cfm?t=116165
and taking the VDSL example from above some values in /etc/sysctl.conf need to be adjusted:
Code:
net.inet.tcp.mssdflt=1452
net.inet.tcp.recvspace=131072
net.inet.tcp.sendspace=131072
net.inet.udp.recvspace=139264
net.inet.udp.sendspace=32768
The tcp.send/recvspace values however are allocated automatically on OpenBSD 5.1, and they seem to be the cause of the speed issue and in fact seem to be set quite conservatively.
So all I need to figure out now is how to adjust it or change the hard-limits - IF it can be done.