TCP and UDP issues on XP SP2
Basically I have been having problems reproducing some results I received before
I upgraded to SP2. I was wondering if any other iperf users have had this
issues. Here is the ticket I opened with Microsoft. So far, I haven't received
a reply.
Problem Description: I have been having problems with a network testing software
our company uses for validation of network speeds. It is IPerf at:
http://dast.nlanr.net/Projects/Iperf
In XP SP1, it worked flawlessly. But since upgrading to SP2, it has issues with
TCP and UDP performance. I believe I have tracked the problem down to various
rate limiting and or blocking SP2 does with raw sockets. Please see,
"http://www.microsoft.com/technet/prodtechnol/winxppro/maintain/sp2netwk.mspx#EHAA,";
for the information I know about.
Is there a way to turn off this rate limiting? I don't know if it rate limits,
or if the examining of the source ip address for UDP is slowing it down. This is
impacting about 40+ people in my office, as we use this software to validate
speeds for clients. We also allow them to download this free software and test
on their own. I know a workaround might be to uninstall SP2, but that won't work
for us in the long run. Since windows seems to be backing away from support for
raw sockets, do you recommend replacing XP with Linux?
Here is the configuration I use on IPerf if you can validate the problem:
IPerf
http://dast.nlanr.net/Projects/Iperf/
Client:
iperf -c SERVERIP -u -r -b 100m -f m -i 1 -l63K -w63
Server:
iperf -s -u -l 63K -w 63K
Operating System:Windows XP