Waaaay back in 2006, I used a network monitoring appliance from Network Physics whom I'd lost touch with. It delivered this graph that quickly became my best friend:
One glance at the Response Time Composition and I could see what had changed from a baseline. I could also see where to dig in further as to the cause of reported 'slowness'. Of course it was never the network and quite often the server or sheer massiveness of application chattiness.
I'm pleased to say my old friend lives on and has been seriously enhanced by the folks at OPNET in their
AppResponse Xpert tool. Even more super-cool is the SaaS edition that fires up right in your
#cloud -running application via a sweet bit of JavaScript.
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