This storage engine provides the following capabilities:
This software runs on Pthreads, thereby providing its client software (e.g., a database server) multi-threading capabilities and resulting scalability from modern SMP and NUMA architectures, and has been used on Linux/x86-64 and Solaris/Niagara architectures.
The SHORE Storage Manager was originally developed on single-cpu Unix-based systems, providing support for "value-added" cooperating peer servers, which were processes on single-CPU machines. One such server was the SHORE Value-Added Server (http://research.cs.wisc.edu/shore), and another of which was Paradise (http://research.cs.wisc.edu/paradise) at the University of Wisconsin. The TIMBER (http://www.eecs.umich.edu/db/timber, and http://dx.doi.org/10.1007/s00778-002-0081-x) and Pericope (http://www.eecs.umich.edu/periscope) projects at the University of Michigan, PREDATOR (http://www.distlab.dk/predator) at Cornell, Lachesis (http://www.vldb.org/conf/2003/papers/S21P03.pdf) BODHI (http://dsl.serciisc.ernet.in/projects/BODHI/homepage/index.html, http://doi.acm.org/10.1145/1007568.1007717) used the SHORE Storage Manager. The storage manager has been used for innumerable published studies since then.
The storage manager had its own (non-preemptive) threads library, which forked a per-disk cooperating process to provide non-blocking I/O. The storage manager also had a communications library for peer-server communication. Until recently, the code structure, nomenclature, and contents reflected its SHORE roots.
In 2007, the Data Intensive Applications and Systems Labaratory (DIAS) at Ecole Polytechnique Federale de Lausanne began work on a port of release 5.0.1 of the storage manager to Pthreads, and developed more scalable synchronization primitives, identified bottlenecks in the storage manager, and improved the scalability of the code. This work was on a Solaris/Niagara platform and was released as Shore-MT http://diaswww.epfl.ch/shore-mt). It was a partial port of the storage manager and did not include documentation. Projects using Shore-MT include StagedDB/CMP (http://www.cs.cmu.edu/~stageddb/), DORA (http://www.cs.cmu.edu/~ipandis/resources/pvldb10pandis.pdf)
In 2009, the University of Wisconsin - Madison (UW) took the first Shore-MT release and ported the remaining code to Pthreads. This work as done on a Red Hat Linux/x86-64 platform. The UW and DIAS cooperated on bug fixes and some internal rewrites. This release is the result of that work, and includes this documentation, bug fixes, and supporting test code.
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