SWL: a search-while-load demand paging scheme with NAND flash memory

As mobile phones become increasingly multifunctional, the number and size of applications installed in phones are rapidly increasing. Consequently, mobile phones require more hardware resources such as NOR/NAND flash memory and DRAM, and their production cost is accordingly becoming higher. One candidate solution to reduce production cost is demand paging using MMU. However, demand paging causes unpredictably long page fault latency, and as such mobile phone manufacturers are reluctant to deploy this scheme. In this paper, we present a method that reduces the long latency of page faults by performing page fault handling in a parallelized manner, considering the characteristics of NAND-Type flash memory. We also discuss how to modify the existing page cache replacement policies so that they can exploit the benefits of the parallelized page fault handler. Experimental results show that the parallelized page fault handler improves the worst case latency of page faults significantly, by u...

• Type: Conference
• Year: 2007
• Where: LCTRTS
• Authors: Jihyun In, Ilhoon Shin, Hyojun Kim
• Keywords: LCTRTS 2007, Mobile Phone, Page Fault, Page Fault Handler, Software Engineering