Locust压力测试方法

• 通过docker执行locust

  docker run -p 8089:8089 -v $PWD:/mnt/locust locustio/locust -f /mnt/locust/locustfile.py

  • /mnt/locust 本地locust脚本目录
  • /mnt/locust/locustfile.py 即将执行的脚本

• Use docker image as a base image

  FROM locustio/locust
  RUN pip3 install some-python-package
  

• CI执行locust，不启用WEBUI的执行方式

  locust -f locust_files/my_locust_file.py --headless -u 1000 -r 100 --run-time 1h30m --stop-timeout 99

  • --headless without the web UI
  • -u 并发用户数
  • -r 每秒发出100用户
  • --run-time 脚本执行时间，到时间会立刻结束
  • --stop-timeout 脚本执行停止的时间

• 分布式执行locust

  • 参考：https://docs.locust.io/en/stable/running-locust-distributed.html#running-locust-distributed

  locust -f my_locustfile.py --worker --master-host=192.168.0.14 --master-port=5557
  locust -f locust_files/my_locust_file.py --headless -u 1000 -r 100  --run-time 1h30m  --stop-timeout 99 --expect-workers X
  

• 监听locust执行,设置执行进程返回的状态码

  import logging
  from locust import events
  
  @events.quitting.add_listener
  def _(environment, **kw):
      if environment.stats.total.fail_ratio > 0.01:
          logging.error("Test failed due to failure ratio > 1%")
          environment.process_exit_code = 1
      elif environment.stats.total.avg_response_time > 200:
          logging.error("Test failed due to average response time ratio > 200 ms")
          environment.process_exit_code = 1
      elif environment.stats.total.get_response_time_percentile(0.95) > 800:
          logging.error("Test failed due to 95th percentile response time > 800 ms")
          environment.process_exit_code = 1
      else:
          environment.process_exit_code = 0
  
  

• 使用配置文件

  locust -f example.py --config ./locust.conf