XHR is a mechanism used to send HTTP/S requests to a web server, and use the response to alter the current document without loading a new page. XHR performance is an important metric for Web site performance monitoring. A significant metric is the client side processing of the response, because of its potential for isolating a pure client side performance problem. The disclosed technique provides a unique way of measuring this metric.

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This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.