Patent ID: 7779044

Claim:
A load simulator that is used to apply access load on a web server device as a test target using a plurality of virtual web clients each of which transmits a request message and receives a response message in order according to a given scenario, said load simulator comprising: a processor; and a storage device storing computer-readable instructions, execution of the computer-readable instructions by the processor configuring the processor to include: a search component to search page data of a response message for a character string indicating an element type name of a mark-up element for invoking a request when a virtual web client receives said response message from said web server device through a communication device; a source modifying component to overwrite said character string searched by said search component by replacing characters of at least a part of said character string with characters, wherein the replaced character string does not invoke the request; and an output component to pass said page data that is overwritten by said source modifying component to a viewer.