Bonn 2010 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 74: Grid-Computing I

T 74.6: Vortrag

Mittwoch, 17. März 2010, 15:15–15:30, HG II

A Billing Log Monitoring System for the ATLAS dCache at the GridKa Tier-1. — •Gen Kawamura1, Volker Büscher1, Günter Duckeck2, Simon Nderitu3, Stefan Tapprogge1, and Daniel Wicke11Johannes Gutenberg-Universität Mainz — 2Ludwig-Maximilians-Universität München — 3Universität Bonn

Usage is the most crucial component of the GRID infrastructures at the Tier-1 site and the whole cloud.The monitoring system consists of two components. A billing log exporter is a tool to export the huge amount of billing data from the standard billing log-files provided by dCache into a MySQL database. The billing logs provide information for each file access in dCache (time stamp, user, pathname, access protocol). As a user frontend a web monitoring system has been set up to keep track of the file access statistics. It provides direct monitoring of file access and I/O throughput by protocol over time, but also more complex queries such as a ranking of files or datasets by access frequency in given time-periods can be performed.

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