Vorpal: Vector Clock Ordering For Large Persistent Memory Systems
Vorpal: Vector Clock Ordering For Large Persistent Memory Systems
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Vorpal:大型持久内存系统的矢量时钟排序
DOI:
10.1145/3293611.3331598
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Swanson, Steven
中科院分区:
文献类型:
--
作者:
Korgaonkar, Kunal;Izraelevitz, Joseph;Zhao, Jishen;Swanson, Steven
In systems with non-volatile main memories (NVMMs), programmers must carefully control the order in which writes become persistent. Otherwise, what will remain in persistence after a crash may be unusable upon recovery. Prior art has already explored semantic models for specifying this persist order, but most enforcement algorithms for the order are not scalable to large server machines because they assume that the machine contains only one or two memory controllers. In this paper, we describe a collection of provably correct algorithms for enforcing the persist-order across writes, generated at many different cores, and persisted across numerous different memory controllers. Relative to existing solutions, our algorithms improve performance by 48% by reducing both traffic and serialization overheads.
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