Swap time‐aware garbage collection policy for NAND flash‐based swap system
Ming‐Wei Lin, S.Y. Chen · Electronics Letters · 2013
A swap time‐aware garbage collection (STGC) policy for the NAND flash‐based swap system is proposed, which focuses on reducing the cleaning cost and improving the degree of wear‐levelling. STGC calculates the cleaning index value of each block to select a victim block and the normalised value of the elapsed swap time of each valid page within the victim blocks to identify the hot valid page and cold valid page. Trace‐driven simulations with a synthetic trace show that the STGC outperforms the existing garbage collection policies.