On Fri, 09 Mar 2007 16:57:37 -0600 Jeff Bromberger <[EMAIL PROTECTED]> wrote:
> Hello, > > I have listed my dmesg and ifconfig at the end of this post for > reference. The problem I'm having is that any ftp or lynx traffic > to an external (ie. outside of my LAN) host comes in at 200KB/sec. > Meanwhile, my Windows boxes which are on the same switch, router and > cable modem, can pull down from the net at over 800KB/sec. I have > swapped cables, tried different ports on the switch and done every > other type of A/B test to no avail. I have also tried both physical > nics on the off chance that I had a hardware issue with one of them. > When I transfer between the OpenBSD machine and an XP machine over > the gigabit ethernet (again using ftp) I get 7500KB/sec. That's > obviously a lot better, but when I transfer between two XP machines > (again with ftp) I get 17000KB/sec. > > But here's where it gets really weird (to me at least). I can run 3 > ftp or lynx sessions at the same time and get 200KB/sec on each of > them. So obviously the NIC, router, cable modem, etc. are capable of > the total throughput that I'm after, but I can't seem to get it in > any one connection. The throughput is always so close to 200KB/sec > regardless of the client, server, server load, etc. that I can't help > but think that there's some kind of throttling limitation in effect > here. Of course the fact that the local LAN traffic is not limited > to this rate blows that theory, unless the limitation is actually > based on the media type (100MBit vs. 1000MBit). I'm pretty much out > of ideas! > > Any thoughts? > You might like to check your net.inet.tcp.recvspace and net.inet.tcp.sendspace sysctl settings, as mentioned here in the FAQ, Section 6.6.4. http://www.openbsd.org/faq/faq6.html#Tuning I saw a similar problem on my ADSL2+ line, until changing these particular parameters. With any luck, it will allow you to make full use of your connection speed and resolve the issues you are having. -- Scott Radvan [EMAIL PROTECTED]
