A2FQ is an Adaptive Approximate Fair Queueing mechanism which considers shared-buffer in switches. A2FQ is adaptive to traffic dynamics by dynamically changing the number of effective queues according to traffic characteristics.

This repo contains our p4 implementation of A2FQ on Bmv2, and evaluation scripts on mininet.

• patch: patch code of bmv2 that implements Multi-priority queues and RSP scheduling.
• projects: p4 code on bmv2.
  • projects/A2FQ: p4 code of A2FQ on bmv2.
  • projects/AFQ: p4 code of AFQ on bmv2.
• exps: scripts of evaluating A2FQ on mininet.
  • exps/iperf_test: test iperf connectivity between two hosts.
  • exps/convergence_udp_dumbbell: convergence test of udp flows in dumbbell topology, start 1 flow each time.
  • exps/convergence_udp_dumbbell_multiflow: similar to exps/convergence_udp_dumbbell, except that it starts multiple flows each time.
• utils: helper code to run p4 applications on bmv2 and mininet.

1. Install p4 software environments according to the tutorial.
2. Apply our patch to enable Multi-priority queues and RSP scheduling.

    cp patch/final/p4include/v1model.p4 /usr/local/share/p4c/p4include/
    cp patch/final/simple_switch/* <bmv2_src_dir>/targets/simple_switch/

3. Recompile and install bmv2.

cd projects/A2FQ
make run
make stop

cd exps/iperf_test
./run.sh

If you have any questions, contact Danfeng Shan.