Installation

Some common installation issues

Increasing Maximum Number of Open Files Limit

Every User/HTTP connection from Locust opens a new file (technically a file descriptor). Many operating systems by default set a low limit for the maximum number of files that can be open at the same time.

Locust will try to adjust this automatically for you, but in a lot of cases your operating system will not allow it (in which case you will get a warning in the log), so you need to do it manually. How to do this depends on your operating system you might find some useful information here: https://www.tecmint.com/increase-set-open-file-limits-in-linux/

psutil/_psutil_common.c:9:10: fatal error: Python.h: No such file or directory

https://stackoverflow.com/questions/63440765/locust-installation-error-using-pip3-error-command-errored-out-with-exit-statu

Windows

https://stackoverflow.com/questions/61592069/locust-is-not-installing-on-my-windows-10-for-load-testing

Installation works, but the locust command is not available

make sure your Python script directory is mentioned in your PATH variable