Abstract
Android operating system has gained large market share. It has become one of the most important platforms in current computer system. In Android devices, flash memory is used as storage devices. However, I/O scheduling in flash memory have not been discussed enough because it has been recognized that I/O scheduling has been no effect on I/O performance with flash memory. In this paper, we will explore effect of I/O scheduling in flash memory and demonstrate that I/O scheduling has effect on current flash memory. We will analyze performance characteristic of flash memory and show relation between I/O scheduling and performance. Then, we will demonstrate that I/O performance can be improved by choosing suitable I/O scheduler.
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