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Date: Sun, 23 Mar 2008 23:21:48 +0100
From: "Daniel Andersson" <engywook@gmail.com>
To: freebsd-performance@freebsd.org
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Subject: Tuning: 100mbit faster, gbit slower.
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Hey!

I was trying to milk the most out of my 100/100. What I
ended up with was something, to me, quite odd. When I
hadn't done anything I could ftp things from my server
box at 50mb/s and run rtorrent at about 9-10 mb/s at most.
After my "tuning" I can only ftp at a very "choppy"
30-40mb/s, but rtorrent runs at about 11mb/s.
This is what I did:

kern.ipc.maxsockbuf=16777216
net.inet.tcp.sendbuf_max=16777216
net.inet.tcp.recvbuf_max=16777216

according to
http://dsd.lbl.gov/TCP-tuning/FreeBSD.html
every other setting there was default
I believe.

I also set these:

net.inet.tcp.recvspace: 262144
net.inet.tcp.sendspace: 262144

dmesg:
http://pastebin.org/24780

Am I just imagining that rtorrent runs faster?
Can't ftp handle high buffers or did I mess
something up? Is there something else I
could do to make it faster? Setting up
polling perhaps?

Cheers,
Daniel Andersson