CXL-INTERPLAY: Unraveling and Characterizing CXL Interference in Modern Computer Systems

Compute Express Link (CXL) is a promising technology that addresses memory and storage challenges. Despite its advantages, CXL faces performance threats from external interference when coexisting with current memory and storage systems. This interference is under-explored in existing research. To ad...

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Bibliographic Details
Published in:2025 62nd ACM/IEEE Design Automation Conference (DAC) pp. 1 - 7
Main Authors: Mao, Shunyu, Luo, Jiajun, Li, Yixin, Zhou, Jiapeng, Zhang, Weidong, Liu, Zheng, Ma, Teng, Deng, Shuwen
Format: Conference Proceeding
Language:English
Published: IEEE 22.06.2025
Subjects:
Design automation
Faces
Hardware
Interference
Kernel
Performance evaluation
Prevention and mitigation
Software
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Summary:Compute Express Link (CXL) is a promising technology that addresses memory and storage challenges. Despite its advantages, CXL faces performance threats from external interference when coexisting with current memory and storage systems. This interference is under-explored in existing research. To address this, we develop CXL-Interplay, systematically characterizing and analyzing interference from memory and storage systems. To the best of our knowledge, we are the first to characterize CXL interference on real CXL hardware. We also provide reverse-reasoning analysis with performance counters and kernel functions. In the end, we propose and evaluate mitigation solutions.
DOI:10.1109/DAC63849.2025.11132607