optimizing xen network speed

http://wiki.xen.org/wiki/Network_Throughput_and_Performance_Guide#Usage

check speed:

Linux

Make sure the following packages are installed on your system: gcc, g++, make, and subversion.

Iperf can be installed from Iperf's SVN repository:

svn co https://iperf.svn.sourceforge.net/svnroot/iperf iperf
cd iperf/trunk
./configure
make
make install
cd
iperf --version # should mentioned pthreads

You might also be able to install it via a package manager, e.g.:

apt-get install iperf

When using the yum package manager, you can install it via RPMForge.

Windows

• Iperf 1.7.0 (win32 threads): iperf-170-win32-threads.exe
• Iperf 2.0.5 (pthreads): iperf-205-pthreads.zip

Here are the simplest commands to execute on the receiver, and then the sender:

# on receiver
iperf -s -f m     # add "-w 256K -l 256K" when sender or receiver is a Windows VM

# on sender
iperf -c  -f m -t 20    # add "-w 256K -l 256K" when sender or receiver is a Windows VM