Along with developing the Mobile Learning System, Mobile Learning requires adequate facilities, such as a server as a storage medium and as a provider of an API-based web service, especially when there are more and more Mobile Learning users. And to ensure the quality of the web service, a system test is needed, namely Load Testing. The load testing method uses Apache JMeter tools to check and test the performance of a server. Load testing is done by testing the existing web services on the cloud server where there are 4 web servers, 1 database server, and 1 load balancing server. Scenario testing is based on load data of 100, 500, and 1000 within 10 seconds. The results obtained from the test data are the average test time with a consistent value in each scenario, with the throughput value getting a very good value because the higher the request is given. The HAProxy server is running well in sharing requests to each server with an error value of 0%.