1. A method for measuring the performance of at least one target server housing a dynamic monitoring tool which can be controlled by scripts, the dynamic monitoring tool comprising predefined probes for acquiring the data relating to the behavior of an operating system and applications of said target server, the method comprising, from a remote management server, the following steps: accessing a dynamic monitoring tool within the target server via a communication network; remotely transmitting at least one script to be executed by the dynamic monitoring tool; automatically accessing, at predetermined times, the target server to retrieve the performance data resulting from the execution of said script by the dynamic monitoring tool; pre-integrating the dynamic monitoring tool with the operating system of the target server, and at the same time as said script being remotely transmitted, sending parameters relating to a lifetime of said script to be executed; wherein the dynamic monitoring tool is a DTrace module, and the target server is accessed using a dedicated Java Measurement Extensions (JMX) protocol; and wherein a predetermined parameter is sent so that the dynamic monitoring tool executes the script continuously during a given lifetime defined by said predetermined parameter.