N/M. i got read/write access. it was based on my local folder mount location.

Thanks again for all the help.

iperf -u will default to 1 Mbps. In order to push the UDP speeds try:
iperf -s -u (on server)
iperf -c [hostname] -u -b 100m

Won't resolve your TCP issues tho...

So how do I imporve my iperf performance? Obviously CIFs shouldn't have anything to do with iperf speeds.

Thanks. Using those commands, UDP transfer speeds were 99.7 Mbps. Perfect!

So why is TCP so slow?

I am troubleshooting on my end with TCP connections and a gigabit ethernet (so not sure if I can help too much :P). But it would be a good idea to take a closer look at your TCP packets using wireshark (it's a program that makes looking at TCP packets easier than using commandline tcpdump for example). The output of wireshark should let you see a bunch of diagnostic info such as time elapsed between packets, window size, window scaling, SYN/ACK/PUSH/FIN flags, etc. Give it a try and maybe post a screenshot of wireshark output?

Sure, I'll try that. I can't find a linux version, is it only for windows?

There is a linux version. Don't remember if I got it through apt-get install or somewhere else.

OK, i got wireshark up and running but I have no idea how to decipher this stuff. Is there a specific type of packet I'm looking for to compare between transfer types?

You want to focus on the packets starting with the packets with SYN flags to and from your server (with port 5001 default). You can export the summary of the TCP packets and if you want to post it in a reply that could be helpful. Also if you post the extended summary of the packets with SYN flags that will have information regarding window size, window scaling, MTU among other things. An example of a summary export with wireshark is on this thread: http://www.linuxquestions.org/questi...175494748-new/