A Survey on real-time Application Latency based on Android OS

The efficiency of response time in any computing device is of vital importance. This is especially true in the real-time operating system, where an adequate latency time allows proper reaction from user to the occurring phenomena by the system. According to Quality of Service (QoS) analysis, latency is clearly high in the traditional operating system (OS) like Android. It is primarily presented as the core performance of a system. Referring to the touch action of an Android operating system, latency to the touch response should be less to get better performance. The term Latency is understood as the lag time from input into a system to the desired output; this term is understood slightly different in a range of contexts and latency issues also fluctuate from one system to another. The latency of a memory is the total time (or clock cycles) taken by a system in responding to a command request. When there is low latency, the response time of memory becomes faster. The latency of a network, operating system (audio, video, applications etc.) and the other electronic systems becomes noticeable approximately after 100ms. The paper reviews the methods to improve the latency time of Android and optimization of the system to get better performance when using touch-enabled android devices.