… We develop a methodology for quantifying user-perceived latency and use it to evaluate
four common application benchmarks with I/O stack optimization on two of the latest
smartphones. Contrary to our expectation, we find that (i) these applications respond
reasonably fast and (ii) the … In this paper, we present a flash solid-state drive (SSD)
optimization that provides hints of SSD internal behaviors, such as device I/O time and
buffer activities, to the OS in order to mitigate the impact of I/O completion scheduling delays …