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OML Infrastructure Overview - A Comprehensive Guide for Monitoring Systems

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Understand OML basics, filters, measurement points, and database usage in detail. Learn about OML.MDIP, its components, and customization options for effective monitoring and data collection.

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OML Infrastructure Overview - A Comprehensive Guide for Monitoring Systems

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  1. OML – Infrastructure overview Igor Leonardo Eloy Macedo

  2. Agenda • OML • Thebasics • Filters • TheMeasurementpoints • The Database • OML MDIP

  3. OML – TheBasics (1) • Firstdeveloped as a componentof OMF • Today is a stande-aloneproject (indepedent) • Collectsanytypeofmeasurementofanytypeofapp • Composedbythreeitems (executionpointofview) • Measurementpoints • MeasurementStreams • OML’sFilteringMechanisms

  4. OML – TheBasics (2)

  5. OML – Filters • It is theresultof some pre-processingon a measurementstream • The big advantageofthis is reducetheamountof data collected • Definidedbythe OML ClientLibrary • It is possible to custumizethen, butthere some default filters: • http://mytestbed.net/projects/oml/repository/revisions/master/show/lib/client/filter • How to creteyourownfilter: • http://omf.mytestbed.net/projects/oml/wiki/Developing_Filters

  6. OML – MeasurementPoints (MP) (2) • “It is the input port for recordingmeasurements” • A MP is a tuplethatindicates a measurement • A measurement is notjust a number • Canbe a groupof itens • In todays version, a measurementcanberepresented as a string | integer | double • App “inject” measurementsinto a MP • ClientLibrary • Registerthe MP • Appliesfilters to them • Sendsthe MP to na output stream | file

  7. OML – MeasurementPoints (MP) (2) OmlMPDefmp_def [] = { { "source", OML_LONG_VALUE }, { "destination", OML_LONG_VALUE }, { "length", OML_LONG_VALUE }, { "protocol", OML_STRING_VALUE }, { NULL, (OmlValueT)0 } }; OmlMP* mp = omlc_add_mp ("packet_info", mp_def); if (mp == NULL) { fprintf (stderr, "Error: couldnotregisterMeasurementPoint \"packet_info\"");; exit (1); }

  8. OML Server • Allowsusers to recordtheirmeasurementsinside a remote database • It works like a daemonprogram for OML arquitecture • Receivesthemeasurementscollectedfromclients • Creates a database namedby “oml-exp-id” (a parameter for configuration, requiredbytheomlc_initfunction • “The oml2-server proposes an abstraction for developers to change the back-end database. Currently, only the sqlite3 backend is fully” • Export database to a txt file (on NICTA testbed) • wget "http://ServerAddress:5053/result/dumpDatabase?expID=Experiment_ID" -O arquivoDump

  9. MDIP Proposal

  10. References • http://oml.mytestbed.net/projects/oml/wiki/Documentation • http://omf.mytestbed.net/projects/omf/wiki/BasicTutorialStage4-5-3 • http://oml.mytestbed.net/projects/oml/wiki/Server • http://oml.mytestbed.net/projects/oml/wiki/Configuring_OML_Client_Applications • http://omf.mytestbed.net/projects/oml/wiki/Client_Programming

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