Multiple Users Execute Tests

There are multiple Users in a locustfile

from locust import task, HttpUser


class User01(HttpUser):
    weight = 3  # 权重
    host = 'https://www.baidu.com'

    @task
    def user_01_task(self):
        self.client.get(url='/', name='user_01_task')


class User02(HttpUser):
    weight = 1  # 权重
    host = 'https://www.qq.com'

    @task
    def user_02_task(self):
        self.client.get(url='/', name='user_02_task')

• Two users are defined host, and the host can be omitted at runtime
• Defined weight, the same as the weight set to the task in the previous section, the user allocation ratio is executed according to 3:1 at runtime

• Results of the

Use --class-picker to specify execution

• The command to run locust uses the --class-picker parameter, and you can manually select the UserClasses to execute when starting the web-ui

$ locust -f locustfiles/multiple_user.py --class-picker 

• If it is in no-ui mode, you can also directly specify the executed UserClasses in the command, for example

$ locust -f locustfiles/multiple_user.py --class-picker User02 User01 --headless -u 20 -r 20 -t 5s
[2023-07-28 12:17:00,956] HUAWEI-MateBook-X-Pro.local/INFO/locust.runners: Ramping to 20 users at a rate of 20.00 per second
[2023-07-28 12:17:00,957] HUAWEI-MateBook-X-Pro.local/INFO/locust.runners: All users spawned: {"User01": 15, "User02": 5} (20 total users)

• Explain the command parameters
  1. --headless no-ui mode execution, and start testing immediately
  2. -u specifies the maximum number of concurrent users to run
  3. -r number of users started per second
  4. -t time to execute the test

summary

1. weightMultiple test User classes can be defined in one locustfile, and the default execution ratio is 1:1, and their execution ratio can be modified by using attributes
2. When there are multiple User classes in a locustfile, you can use the --class-picker command parameter to select which User classes to execute to execute the test
3. The no-ui execution is mentioned here, because in general, our stress test is executed on the cloud server in actual work, and locust also provides the --headless command to execute through no-ui
4. After assigning a value to the host in the User class, we don't need to set the host for locust at runtime
5. Locust uses more command parameters, it is recommended to read it carefully, and locust -hcheck it by

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