locust/examples/custom_shape/double_wave.py

49 lines
1.3 KiB
Python

from locust import HttpUser, LoadTestShape, TaskSet, constant, task
import math
class UserTasks(TaskSet):
@task
def get_root(self):
self.client.get("/")
class WebsiteUser(HttpUser):
wait_time = constant(0.5)
tasks = [UserTasks]
class DoubleWave(LoadTestShape):
"""
A shape to imitate some specific user behaviour. In this example, midday
and evening meal times. First peak of users appear at time_limit/3 and
second peak appears at 2*time_limit/3
Settings:
min_users -- minimum users
peak_one_users -- users in first peak
peak_two_users -- users in second peak
time_limit -- total length of test
"""
min_users = 20
peak_one_users = 60
peak_two_users = 40
time_limit = 600
def tick(self):
run_time = round(self.get_run_time())
if run_time < self.time_limit:
user_count = (
(self.peak_one_users - self.min_users)
* math.e ** -(((run_time / (self.time_limit / 10 * 2 / 3)) - 5) ** 2)
+ (self.peak_two_users - self.min_users)
* math.e ** -(((run_time / (self.time_limit / 10 * 2 / 3)) - 10) ** 2)
+ self.min_users
)
return (round(user_count), round(user_count))
else:
return None