Characterizing device performance based on user-perceivable latency

摘要

A method and an apparatus for characterizing performance of a device based on user-perceivable latency. To characterize device performance, a value of a metric may be computed from latencies of operations performed by the device. In computing a value of a metric, latencies may be treated differently, such that some latencies perceivable by a user of the device may have a greater impact on the value of the metric than other latencies that either are not perceivable or are perceived by the user to a lesser degree. Such a performance metric based on user-perceivable latency facilitates identification of computing device that provide a desirable user experience.

主权项

1. A method of characterizing performance of a device with respect to a user-perceivable latency, the method comprising:
obtaining a plurality of latencies that each corresponds to a plurality of operations involving the device, where a first group of operations of the plurality of operations correspond to a first application, and where a second group of operations of the plurality of operations correspond to a second application initiated by the first application; selecting a subset of latencies from the obtained plurality of latencies, the selecting comprising selection of a latency based on a predicted impact of the latency on a user of the device, where the predicted impact is based on a first weight assigned to each of the plurality of latencies corresponding to the first group of operations and a second weight assigned to each of the plurality of latencies corresponding to the second group of operations; and computing, based on the selected subset of latencies, a rating of the device with respect to the user-perceivable latency.