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CLAudit : Planetary-Scale Cloud Latency Auditing Platform

CLAudit : Planetary-Scale Cloud Latency Auditing Platform. Czech Technical University in Prague. Ondrej Tomanek ( ondrej.tomanek@fel.cvut.cz ) Lukas Kencl ( lukas.kencl@fel.cvut.cz ). Agenda. Background Motivation CLAudit Measurements Anomaly showcase Conclusion. Cloud service.

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CLAudit : Planetary-Scale Cloud Latency Auditing Platform

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  1. CLAudit: Planetary-Scale Cloud Latency Auditing Platform Czech Technical University in Prague OndrejTomanek (ondrej.tomanek@fel.cvut.cz) Lukas Kencl (lukas.kencl@fel.cvut.cz) Tomanek, Kencl: CLAudit - Planetary-Scale Cloud Latency Auditing Platform

  2. Agenda • Background • Motivation • CLAudit • Measurements • Anomaly showcase • Conclusion Tomanek, Kencl: CLAudit - Planetary-Scale Cloud Latency Auditing Platform

  3. Cloud service • Cloud computing, Cloud service, Cloud application Tomanek, Kencl: CLAudit - Planetary-Scale Cloud Latency Auditing Platform

  4. Cloud service latency • Latency: sum of delays, semi-bounded, variable • Service latency: made out of many sub-latencies Tomanek, Kencl: CLAudit - Planetary-Scale Cloud Latency Auditing Platform 4

  5. Motivation Cloud service latency lacks a model Performance troubleshooting is nontrivial Emerging apps, Suboptimal practices, Overlay services What we need is a ... TOOL Tomanek, Kencl: CLAudit - Planetary-Scale Cloud Latency Auditing Platform

  6. CLAudit - deployment Clients (Planetlab) AppServers (Azure) DBservers (Azure) Monitor (CTU) Tomanek, Kencl: CLAudit - Planetary-Scale Cloud Latency Auditing Platform

  7. CLAudit - components DATA CENTER Tomanek, Kencl: CLAudit - Planetary-Scale Cloud Latency Auditing Platform

  8. Measurements Tomanek, Kencl: CLAudit - Planetary-Scale Cloud Latency Auditing Platform

  9. Measurements - notes • Measured variables • Preprocessing • Setup: • 3 minutes period • 5 probes of each type sent • median (and min) recorded • millisec precision • lost sample = 0 millisec 1 month =~400 MB dataset Tomanek, Kencl: CLAudit - Planetary-Scale Cloud Latency Auditing Platform

  10. Measurements - example Chicago Tomanek, Kencl: CLAudit - Planetary-Scale Cloud Latency Auditing Platform

  11. Anomaly showcase Tomanek, Kencl: CLAudit - Planetary-Scale Cloud Latency Auditing Platform

  12. Anomaly showcase – ‘HTTP spike’ Chicago Tomanek, Kencl: CLAudit - Planetary-Scale Cloud Latency Auditing Platform

  13. Anomaly showcase – ‘Periodic behavior’ Hong Kong Dublin Tomanek, Kencl: CLAudit - Planetary-Scale Cloud Latency Auditing Platform

  14. The paper contains:- more examples- more anomalies- event analyses Tomanek, Kencl: CLAudit - Planetary-Scale Cloud Latency Auditing Platform

  15. Conclusion Future directions • Novel planetary-scale distributed approach to latency monitoring: • Allows for data interpretation and event reasoning • Helps Cloud users • Helps Cloud tenants • Helps Cloud providers • Latency model • Representativeness – mobility, multiple VMs • SDN & Realtimeprocessing Tomanek, Kencl: CLAudit - Planetary-Scale Cloud Latency Auditing Platform

  16. Thank you for attention • The data are available for use (open license) http://www.rdc.cz/en/projects/CloudComputing/CLAudit • We’re looking for partners and collaborators lukas.kencl@fel.cvut.cz ondrej.tomanek@fel.cvut.cz Tomanek, Kencl: CLAudit - Planetary-Scale Cloud Latency Auditing Platform – published at IEEE Cloudnet 2013, San Francisco, USA

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