Performance Evaluation and Optimization of Journaling File Systems with Multicores and High-Performance Flash SSDs

멀티코어 및 고성능 플래시 SSD 환경에서 저널링 파일 시스템의 성능 평가 및 최적화

  • Received : 2018.02.22
  • Accepted : 2018.03.14
  • Published : 2018.04.28


Recently, demands for computer systems with multicore CPUs and high-performance flash-based storage devices (i.e., flash SSD) have rapidly grown in cloud computing, surer-computing, and enterprise storage/database systems. Journaling file systems running on high-performance systems do not exploit the full I/O bandwidth of high-performance SSDs. In this article, we evaluate and analyze the performance of the Linux EXT4 file system with high-performance SSDs and multicore CPUs. The system used in this study has 72 cores and Intel NVMe SSD, and the flash SSD has performance up to 2800/1900 MB/s for sequential read/write operations. Our experimental results show that checkpointing in the EXT4 file system is a major overhead. Furthermore, we optimize the checkpointing procedure and our optimized EXT4 file system shows up to 92% better performance than the original EXT4 file system.


Flash SSD;Multicore;Journaling File System


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Supported by : 동덕여자대학교