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Exploring improvements to the LHCb ELOG electronic logbook

ELOG, the electronic logbook used by LHCb, has been suffering from poor accessibility and slow performance. Investigating revealed that a combination of inefficient searches, caused mainly by frequent reads of files stored in NFS, and an inability for the server to handle concurrent operations were re...

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Detalles Bibliográficos
Autores principales: Leung, Philip, Neufeld, Niko
Lenguaje:eng
Publicado: 2015
Materias:
Acceso en línea:http://cds.cern.ch/record/2048138
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author Leung, Philip
Neufeld, Niko
author_facet Leung, Philip
Neufeld, Niko
author_sort Leung, Philip
collection CERN
description ELOG, the electronic logbook used by LHCb, has been suffering from poor accessibility and slow performance. Investigating revealed that a combination of inefficient searches, caused mainly by frequent reads of files stored in NFS, and an inability for the server to handle concurrent operations were rendering the service unusable for up to a minute when users performed search or sort operations. By adding a minor patch to the ELOG source code, moving data to local storage and optimizing server configuration the project was able to reduce search-times for the largest of the logbooks being used at LHCb to 30% while also improving possibilities for future growth by allowing for concurrent use and accelerating the most common search-operations in a way which should stay consistent over extended time-periods.
id cern-2048138
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2015
record_format invenio
spelling cern-20481382019-09-30T06:29:59Zhttp://cds.cern.ch/record/2048138engLeung, PhilipNeufeld, NikoExploring improvements to the LHCb ELOG electronic logbookParticle Physics - ExperimentELOG, the electronic logbook used by LHCb, has been suffering from poor accessibility and slow performance. Investigating revealed that a combination of inefficient searches, caused mainly by frequent reads of files stored in NFS, and an inability for the server to handle concurrent operations were rendering the service unusable for up to a minute when users performed search or sort operations. By adding a minor patch to the ELOG source code, moving data to local storage and optimizing server configuration the project was able to reduce search-times for the largest of the logbooks being used at LHCb to 30% while also improving possibilities for future growth by allowing for concurrent use and accelerating the most common search-operations in a way which should stay consistent over extended time-periods.LHCb-PUB-2015-020CERN-LHCb-PUB-2015-020oai:cds.cern.ch:20481382015-09-01
spellingShingle Particle Physics - Experiment
Leung, Philip
Neufeld, Niko
Exploring improvements to the LHCb ELOG electronic logbook
title Exploring improvements to the LHCb ELOG electronic logbook
title_full Exploring improvements to the LHCb ELOG electronic logbook
title_fullStr Exploring improvements to the LHCb ELOG electronic logbook
title_full_unstemmed Exploring improvements to the LHCb ELOG electronic logbook
title_short Exploring improvements to the LHCb ELOG electronic logbook
title_sort exploring improvements to the lhcb elog electronic logbook
topic Particle Physics - Experiment
url http://cds.cern.ch/record/2048138
work_keys_str_mv AT leungphilip exploringimprovementstothelhcbelogelectroniclogbook
AT neufeldniko exploringimprovementstothelhcbelogelectroniclogbook