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About this paper
Nannan Zhao, Jiameng Zhang, Taoyu Zhong, Bo Wang, Hao Wang, Zhijie Huang, Shujie Han, Xiaonan Zhao and 1 more
The authors measure how garbage-collection victim selection changes the value of data-placement labels in flash storage. In controlled simulations, they vary selection policy while holding other factors fixed, and also test one mail-server trace. Label value peaks at intermediate selectivity in 47 of 48 synthetic configurations; the trace shows a smaller effect. Results concern write amplification, not speed or endurance.
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