Abstract
Disk array technology has been widely used for parallel I/O operations in the array. Distributed RAID can be configured as single I/O space to facilitate programming and performance efficiency in workstation clusters. In single I/O space, the basic operation unit to the disks in the array is stripes. False sharing problem in single I/O space, has been recognized as the major factor to the degradation of overall system performance. In this paper, we present an efficient Length-variable Command Recombination (LCR) method. It reduces the I/O access time without increasing the irrelevant content in the buffer, reducing the false sharing effect. Theoretical analysis and experimental results are given to illustrate the performance gain in using LCR method.
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© 1999 Springer-Verlag Berlin Heidelberg
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Jin, H., He, J., Chen, Q., Hwang, K. (1999). Grouped RAID accesses to reduce false sharing effect in clusters with single I/O space. In: Polychronopoulos, C., Fukuda, K.J.A., Tomita, S. (eds) High Performance Computing. ISHPC 1999. Lecture Notes in Computer Science, vol 1615. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0094934
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DOI: https://doi.org/10.1007/BFb0094934
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