A milestone for DPM (Disk Pool Manager)

The ADABAS Buffer Pool Manager

The buffer pool manager is a central component of ADABAS, a high performance scaleable database system for OLTP processing. High efficiency and scalability of the buffer pool manager is mandatory for ADABAS on all supported platforms. In order to allow a maximum of parallelism without facing the danger of deadlocks, a multi-version locking method is used. Partitioning of central data structures...

DPM: A Measurement System for Distributed Programs

DPM is a system for monitoring the execution and performance of distributed programs. An important characteristic of its design is the simplicity of each part of the design. This simplicity has resulted in a system of tools that has a wide range of applications and that was relatively easy to construct. We start with a simple framework for distributed computation based on message interactions. ...

Atropos: A Disk Array Volume Manager for Orchestrated Use of Disks (CMU-PDL-03-101)

The Atropos logical volume manager allows applications to exploit characteristics of its underlying collection of disks. It stripes data in track-sized units and explicitly exposes the boundaries, allowing applications to maximize efficiency for sequential access patterns even when they share the array. Further, it supports efficient diagonal access to blocks on adjacent tracks, allowing applic...

Atropos: A Disk Array Volume Manager for Orchestrated Use of Disks

The Atropos logical volume manager allows applications to exploit characteristics of its underlying collection of disks. It stripes data in track-sized units and explicitly exposes the boundaries, allowing applications to maximize efficiency for sequential access patterns even when they share the array. Further, it supports efficient diagonal access to blocks on adjacent tracks, allowing applic...

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