Revision as of 22:08, 31 August 2017

High Speed container communications using VPP Communications Library (VCL)

Using the VPP Communications Library and an LD_PRELOAD library for standard POSIX sockets, VPP can demonstrate a 2.75x speed improvement over traditional Linux bridge.

HowTo

Prequisites

• docker (Version: 17.05)
• iperf3 (3.0.11)
• VPP: git clone https://gerrit.fd.io/r/vpp
• VPPSB: git clone https://gerrit.fd.io/r/vppsb

Environment Setup and Building

• Clone VPP and the VPPSB projects.

• Edit vppsb/vcl-ldpreload/env.sh
  • Set VCL_BASE to directory above VPP and VPPSB source. Leave all other env vars in this file alone.

 source ./env.sh

• Change to VPP source directory and build

 cd $VPP_DIR

• Modify uri.am to enable socket_test program

 perl -pi -e 's/noinst_PROGRAMS/bin_PROGRAMS/g' $VPP_DIR/src/uri.am

• Build VPP release

 make install-dep wipe-release bootstrap dpdk-install-dev build-release

• Build LD_PRELOAD library against VPP build above.

This does not install the LD_PRELOAD library in your system. Instead it will be referenced from the build directory set in VCL_LDPRELOAD_LIB

 cd $LDP_DIR/vcl-ldpreload/src
 autoreconf -i -f
 ./configure VPP_DIR=$VPP_DIR
 make

Running the demo

• Run test script without parameters to see help menu:

 cd $VPP_DIR/test/scripts
 ./socket_test.sh

Docker iPerf examples

These demos launch xterms, and have been tested on Ubuntu16.04. To quit, close xterms and run following docker kill command

WARNING: This will kill all docker containers on your system. The command below is deliberately commented out to protect the innocent, and copypasta-happy.

 #docker kill $(docker ps -q)

• Docker iPerf using default Linux Bridge

 ./socket_test.sh -bi docker-kernel

• Docker iPerf using VPP

 ./socket_test.sh -bi docker-preload