1. from imagination to impact © 2009 NICTA. All Rights Reserved. Max Ott for the TEMPO Team @ NICTA max.ott@nicta.com.au OML Update Instrumentation and Measurement (I&M) Working Session ¶ ¶

2. 2 © 2009 NICTA Summary and status OML is a measurement framework for real-time collection and dissemination of measurement streams Based on a stream processing model Just shipped 2.4 –Support for Postgresql & blobs LabWiki portal in beta Used in production environments 24/7

3. 3 © 2009 NICTA Intended uses OML is a general measurement framework –OML can measure pretty much anything –OML by itself doesn’t measure anything MStream Application Service MPointFilter Storage Stream Table

4. 4 © 2009 NICTA Intended uses Used by experimenters –iperf –gps –signal strength Used by infrastructure –uptime –usage –performance parameters –network parameters –for operational and ‘out-of-slice’ measurements

5. 5 © 2009 NICTA Creates or includes info for MDOD? Includes information –Separate logging table –Uses RDF-like structure timestamp subject predicate object source Does not create MDOD format –Easy to add as additional output format for “result” service

6. 6 © 2009 NICTA Includes persistent operational services Easy to setup OML servers –real work is done by database backend Do we need ‘community’ servers? Every OMF AM is most likely running an OML server

7. 7 © 2009 NICTA Integrates with MDA service? how? status? issues? Integrated with Experimenter Portal (beta)

8. 8 © 2009 NICTA Integrates with MDA service? how? status? issues? Have been exploring iRODS –service operated by AARNET Have not explored CNRI Archive Service

9. 9 © 2009 NICTA Authorization methods supported? issues? Currently have an inconsistent set of methods Needs major cleanup Working on consistent assertion-based scheme across all aspects of OMF/OML –Relational algebra using “closure” under composition –Allows for easily limiting the query scope