1. A method for determining resources for a load test of one or more servers using one or more load test machines, comprising: collecting historical machine usage data of at least one load test machine, the at least one load test machine to emulate numbers of users accessing the one or more servers, to produce a user-accessible database of historical machine usage data for the at least one load test machine; the historical usage data comprising a number of users that can be emulated by a load test machine within specified load test machine process limits; determining by a user, from the historical machine usage data in the user-accessible database, a number of users accessing the one or more servers that can be emulated by the at least one load test machine within specified load test machine process limits; designing a subsequent load test using the historical machine usage data; and emulating the determined number of users by the at least one load test machine to perform the subsequent load test designed using the historical machine usage data, the emulating comprising generating multiple client-server sessions to emulate user interactions with the one or more servers.