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Performance testing w/ virtual mainframe
Does anyone have experience in working with Loadrunner after implementing a virtual mainframe OR experience/familiarity of virtual mainframes. We are THINKING about implementing one to offset outages in our perf test environment. I have been researching and along with having to purchase RTE vusers and configuring powerterm to act as a terminal emulator to the host (virtual mainframe OR real mainframe) what is required to set something like this up. I was looking at UXM technologies but it looks like a lot of development work is required for their "mainframe in a box" solution as well as having to manage our current test environment and the virtual mainframe such as having builds loaded in both places. any thoughts on this?
I was also thinking that response times may vary on a real mainframe where it is configurable but in a virtual mainframe the response may always be the same.
Thanks in advance and have a good day!
Re: Performance testing w/ virtual mainframe
Is part of your testing testing the code that woud be running in your virtual mainframe? If so I don't think you are going to save any money/time going this way. If the mainframe is not the object of your testing look into building a stub to simulate the mainframe responses and run this in your test environment. For instance if you have a web application that retrieves customer information over MQ to the mainframe you could simualte this bit with some code running on the app server by sending an appropriate response. Obviously, this can also get complex, but in places where you can get away with it and you can cost justify the develoment of the stubs is a good approach.