Disk-based database systems use buffer managers in order to transparently manage data sets larger than main memory. This traditional approach is effective at minimizing the number of I/O operations, but is also the major source of overhead in comparison with in-memory systems. To avoid this overhead, in-memory database systems therefore abandon buffer management altogether, which makes handling...

Storage Class Memory (SCM) is a novel class of memory technologies that promise to revolutionize database architectures. SCM is byte-addressable and exhibits latencies similar to those of DRAM, while being non-volatile. Hence, SCM could replace both main memory and storage, enabling a novel single-level database architecture without the traditional I/O bottleneck. Fail-safe persistent SCM alloc...

Phase change memory (PCM) technology appears as more scalable than DRAM technology. As PCM exhibits access time slightly longer but in the same range as DRAMs, several recent studies have proposed to use PCMs for designing main memory systems. Unfortunately PCM technology suffers from a limited write endurance; typically each memory cell can be only be written a large but still limited number o...

Process in memory (PIM) is a promising solution to address the “memory wall” issue, and most of the proposed PIM architectures integrate logic with memory. However, as long as the computation is done by logic, it needs to access memory for data. In this work, we propose a novel PIM system, utilizing metal-oxide resistive random access memory (ReRAM) as main memory and also for computation. As a...

This paper describes a main memory data storage system for a distributed system of heterogenous general purpose workstations. We show that distributed main memory storage managers are qualitatively diierent from distributed disk based storage managers. Specii-cally, we show that load balancing, which is crucial to disk-based systemss26], has little eeect on the performance of a memory-based sys...

Dynamic performance stubs provide a framework for the simulation of the performance behavior of software modules and functions, allowing many to be used as an extension to software performance engineering methodologies. The methodology of dynamic performance stubs can also be used for gain oriented performance improvements and it is also possible to identify “hidden” bottlenecks and to prioriti...