tuning

EMQX_BASTION_IP=XXX.XXX.XXX.XXX
ansible-playbook \
  -i localhost \
  -e emqx_bastion_server=$EMQX_BASTION_IP \
  -e emqx_cluster_name=thalesmg \
  -e emqx_emqx_num=2 \
  -e emqx_loadgen_num=20 \
  -e emqx_db_backend=rlog \
  -e emqx_num_cores=1 \
  tuning.yml

running test scripts

EMQX_BASTION_IP=XXX.XXX.XXX.XXX
NUM_EMQX=10
NUM_LG=3
RUN_DATE=$(date +'%Y%m%d-%H%M%S')
NUM_PROC=30
INTERVAL_MS=7
TEST_TYPE="conn"
RUN_NAME="rlog.10cores.${TEST_TYPE}.directly2node.mnesia-nolog.${NUM_PROC}proc.${INTERVAL_MS}ms"
OUTPUT_RECORDING="${RUN_NAME}.${RUN_DATE}"
echo Output recording: ${OUTPUT_RECORDING}
ansible-playbook \
  -i localhost \
  -e emqx_bastion_server=$EMQX_BASTION_IP \
  -e emqx_cluster_name=thalesmg \
  -e emqx_emqx_num=${NUM_EMQX} \
  -e emqx_loadgen_num=${NUM_LG} \
  -e emqx_script_result_file="$OUTPUT_RECORDING" \
  -e script_timeout_s=30000 \
  -e emqx_test_script_file="${TEST_TYPE}-test.sh" \
  -e emqtt_bench_interval=${INTERVAL_MS} \
  -e emqx_test_procs=${NUM_PROC} \
  -e emqtt_bench_number_of_connections=1500000 \
  -e emqtt_bench_session_expiry_interval=0 \
  -e script_timezone=$(timedatectl | grep -i zone | sed 's|.*Time zone: \([^ ]*\).*|\1|')
  run-test.yml
echo Output recording: ${OUTPUT_RECORDING}

To skip collecting output from emqtt-bench, simply pass --skip-tags collect to the command above.

Also, one can pass -e emqtt_bench_lowmem_mode=True to use emqtt-bench’s low memory mode.

overlays

to run the “overlay files” step, put the files to be copied onto the servers on files/, add the source and destination paths in tuning.yml and execute the playbook passing the -e emqx_beam_overlays=True flag.

ex:

# tuning.yml
      block:
      - name: overlay stat path
      # .....
    when: emqx_beam_overlays
    vars:
      overlays:
        - dest: "/usr/lib/emqx/lib/mnesia-4.19/ebin/mnesia_log.beam"
          src: "mnesia_log.beam"
        - dest: "/etc/emqx/emqx.conf"
          src: my-emqx.conf