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Extending database task schedulers for multi-threaded application code

Related publications (60)

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Transparent scalable database replication

Sameh Mohamed Elnikety

This thesis demonstrates that, despite earlier projections to the contrary, database replication on a cluster of low-cost commodity servers can transparently scale database performance. In a replicated system providing the standard transactional properties ...

EPFL2008

A Rate-based Prefiltering Approach to BLAST Acceleration

Dionysios Pnevmatikatos, Sotiria Fytraki

DNA sequence comparison and database search have evolved in the last years as a field of strong competition between several reconfigurable hardware computing groups. In this paper we present a BLAST preprocessor that efficiently marks the parts of the data ...

2008

Automated inspection of microlens arrays

Heinz Hügli

Industrial inspection of micro-devices is often a very challenging task, especially when those devices are produced in large quantities using micro-fabrication techniques. In the case of microlenses, millions of lenses are produced on the same substrate, t ...

2008

To Share or Not To Share?

Anastasia Ailamaki, Babak Falsafi, Frederick Ryan Johnson, Ippokratis Pandis

Intuitively, aggressive work sharing among concurrent queries in a database system should always improve performance by eliminating redundant computation or data accesses. We show that, contrary to common intuition, this is not always the case in practice, ...

2007

Degradation Processes and Wear of Railway Switches and Crossings: The Swiss Experience

Willem-Jan Zwanenburg

Using databases of the Swiss Federal Railways (SBB), statistical analyses are carried out on the expected lifetime of railway switches (points) and crossings (components). They are attributed to different parameters which influence the speed of degradation ...

2007

Efficient Semi-structured Queries in Scala using XQuery Shipping

This project proposes a new approach to interact with database systems through programming languages. A formal query language can be integrated within modern programming languages and the semi-structured queries can be evaluated using automatic transformat ...

2006

Indexing data-oriented overlay networks

Karl Aberer, Manfred Hauswirth, Anwitaman Datta, Roman Schmidt

We address the problem of how a data-oriented, structured overlay networks can be constructed efficiently from scratch in a self-organized way, a problem that has so far not been addressed in the literature. This problem occurs when using overlay networks ...

2005

A comparative evaluation of transparent scaling techniques for dynamic content web servers

Willy Zwaenepoel

We study several transparent techniques for scaling dynamic content web sites, and we evaluate their relative impact when used in combination. Full transparency implies strong data consistency as perceived by the user, no modi- fications to existing dynami ...

2005

Generalized Snapshot Isolation and a Prefix-Consistent Implementation

Willy Zwaenepoel, Sameh Mohamed Elnikety, Fernando Pedone

Generalized snapshot isolation extends snapshot isolation as used in Oracle and other databases in a manner suitable for replicated databases. While (conventional) snapshot isolation requires that transactions observe the ``latest'' snapshot of the databas ...

2004

Pronto: High Availability for Standard Off-the-shelf Databases

Fernando Pedone

Enterprise applications typically store their state in databases. If a database fails, the application is unavailable while the database recovers. Database recovery is time consuming because it involves replaying the persistent transaction log. To isolate ...

2004