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Journaling file systems are widely used in modern computer systems as they provide high reliability at reasonable cost. However, existing journaling file systems are not efficient for emerging PCM (phase-change memory) storage because they are optimized for hard disks. Specifically, the large amount of data that they write during journaling degrades the performance of PCM storage seriously as it has...
Journaling file systems are widely used in modern computer systems as it provides high reliability with reasonable performance. However, existing journaling file systems are not efficient for emerging PCM (Phase Change Memory) storage. Specifically, a large amount of write operations performed by journaling incur serious performance degradation of PCM storage as it has long write latency. In this...
Recently, PCM (phase change memory) emerges as a new storage media and there is a bright prospect that PCM will be used as a storage device in the near future. Since the optimistic access time of PCM is expected to be almost identical to that of DRAM, we can make a question that the traditional buffer cache will be still effective for high speed secondary storage such as PCM. This paper answers it...
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