Performance is one of several holy grails in computing. Systems are never fast enough to accommodate all needs, so we have to balance desired operations with available resources. Zabbix can help you both with evaluating the performance of a particular action and monitoring the current load.

You can start with simple things, such as network performance, indicated by a ping round-trip, or the time it takes for a website to return content, and move forward with more complex scenarios, such as the average performance of a service in a cluster coupled with the disk array throughput.