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The distributed RAID for serverless cluster computer is used to save the checkpoint files periodically according to the checkpointing algorithm for rollback recovery. Striped checkpointing algorithm newly proposed in this paper can adopt the merits of the coordinated and the staggered checkpointing algorithms. Coordinating enables parallel I/O on distributed disks and staggering avoids network bottleneck...
The study proposes a modeling method for nonlinear system, which predicts characteristics of the ECG R-R interval variation. For determining model equation, we adopted genetic programming method that the chromosome represented the model equation consisting of time-delayed variables, constants, and four arithmetic operators. By the genetic programming the regressive nonlinear equations were produced...
Write requests are written from the disk cache to the disk array by the destage algorithm and the response time of host read request dominates the performance of the RAID 5. Since RAID is composed of multiple disk, the overal performance at the disk array level is more important than the performance at a disk level. However, previous destage algorithms do not take into consideration the overall performance...
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