PiCO QL

A software library for runtime interactive queries on program data

Journal article (2015)

Authors

M. Fragkoulis Athens University of Economics and Business

D. Spinellis Athens University of Economics and Business

Panos Louridas Athens University of Economics and Business

Affiliation

External organisation

Data analysis SQL Main memory data structures Program data

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Published Date

01-12-2015

Language

English

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Affiliation

External organisation

Abstract

PiCO QL is an open source C/C++ software whose scientific scope is real-time interactive analysis of in-memory data through SQL queries. It exposes a relational view of a system's or application's data structures, which is queryable through SQL. While the application or system is executing, users can input queries through a web-based interface or issue web service requests. Queries execute on the live data structures through the respective relational views. PiCO QL makes a good candidate for ad-hoc data analysis in applications and for diagnostics in systems settings. Applications of PiCO QL include the Linux kernel, the Valgrind instrumentation framework, a GIS application, a virtual real-time observatory of stellar objects, and a source code analyser.