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About this paper
Hyunsun Chung, Seongho Bong, Hong-Yeon Kim, Youngjae Kim
CXDVirt emulates CXL-SSD devices without a virtual machine. Its Linux kernel module uses devdax and page faults for direct cached hits and modeled NAND latency on misses. In a single-threaded pointer-chase test, P99.9 miss latency was 10.5 μs, versus 43.4 μs for Cylon, with 6.2 μs configured; evaluation used remote NUMA, not physical CXL hardware.
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