A talk held by Dr.-Ing. Kalman Graffi at 9. April 2008 at the QuaP2P Kolloquium in Darmstadt / Germany

1. Efficiency and Information Management in Peer-to-Peer Systems QuaP2P Kolloquium, 9. April 2008 Efficiency and Information Management 7.31.10.25 peer - to - peer.info 12.5.7.31 95.7.6.10 86.8.10.18 planet - lab.org berkeley.edu 89.11.20.15

6. Efficiency Management in Peers Publikationen Systematic First Response Use Case Evaluation D. Bradler, J. Kangasharju, M. Mühlhäuser MODIES 2008 Evaluation of Peer-to-Peer Overlays for First Response D.Bradler, J. Kangasharju, M. Mühlhäuser, MP2P 2008 Taxonomy on Sched. and AQM Mechanisms in P2P Scenarios K. Graffi et al.Technical Report KOM-2007-1/2, 2007 Taxonomy of Scheduling and Active Queue Mechanisms on Overlay Flows Welche Strategien aus der Netzwerk-schicht sind auch im Overlay anwendbar? 01/2007 1. Message Scheduling Before: After : 2. Queue Management Before: After: Queue Limit Overlay Bandwidth Management – Scheduling and Active Queue Management of Overlay Flows Overlay Bandwidth Mana-gement: Sched. and AQM of Overlay Flows, K.Graffi et al., IEEE LCN ‘07 Wie kann man QoS für Overlay Flows erbring-en? Welche Verfahren sind geeignet? Sind lokale Lösungen aus-reichend? 10/2007 Wie kann man QoS (geringe Latenz, Loss) für P2P-basierte Notrufdienste erbringen? Anwendung der Erkenntnisse. ECHoP2P: Emergency Call Handling over P2P Overlays ECHoP2P: Emergency Call Handling over P2P Overlays K.Graffi, A.Kovacevic, et al. P2P-NVE ‘07 11/2007 Connect me to an emergency station! Emergency Call Handling QoS Provisioning 05/2007 P2P Forschung - Übersicht und Herausforderungen, K.Graffi, Quap2P, it-Informa-tion Technology, 2007 Peer-to-Peer Research – Overview and Challenges Was ist Peer-to-Peer? Gemeinschaftsarbeit von QuaP2P mit einem Überblick zu Peer-to-Peer und seinen Herausforder-ungen. Network Wrapper Overlay Layer User UDP TCP Online-time Model Behavior Package Loss Delay Model Bandwidth Kademlia Simulation Engine Application Layer Distribution Strategy Chord Replication Strategy

7. Efficiency Management in P2P Networks 05/2008 Load Balancing for Multimedia Streaming in Heterogeneous Peer-to-Peer Systems K.Graffi,…,A.Kovacevic, et al. ACM NOSSDAV ‘08 Load Balancing for Multimedia Streaming in Heterogeneous Peer-to-Peer Systems Wie kann die Ressourc- en und Aufgabenver-teilung in P2P Netzen fair gestaltet werden? Wie kann man Lasten-verteilung und Hetero-genität unterstützen? Eine allgemeines Over-Overlay für Attribute-based Peer Search. Wie gestaltet man skalierende Informationsarchitekturen? Information and Efficiency Management: Attribute-based Peer Search for Structure P2P Overlays Towards and Information and Efficiency Management Arch… K. Graffi et al. Technical Report KOM-2008-2, 2008 4/2008 7.31.10.25 peer - to - peer.info 12.5.7.31 95.7.6.10 86.8.10.18 graffi.org - lifesocial.org 130.83.139.139 KBR Layer Unified ID Space with Overlay specific IDs KBR using Unified ID Space Coordinator Support Peer Peer From Cells to Organisms: Long-Term Guarantees on Service Provisioning in P2P Networks K. Graffi, A.Kovacevic, et al. ACM SIGAPP NOTERE ’08 From Cells to Orga-nisms: Long-term Guarantees on Service Provisioning in Peer-to-Peer Networks Wie kann man die Optimierung der Res- sourcenverteilung im Overlay als Aufgabe des Overlays gestalten? 06/2008 Information and Efficiency Management in the case of FreePastry Information and Efficiency Management in the Case of FreePastry, K.Graffi et al., to be published ‘08 Ein Statistik-Modul (für Overlay Service Provider) und Attribute-based Peer Search. 3/2008 7.31.10.25 peer - to - peer.info 12.5.7.31 95.7.6.10 86.8.10.18 graffi.org - lifesocial.org 130.83.139.139

8. Towards QoS & Emergency Call Handling 2 Connect me to an emergency station! Emergency Call Handling QoS Provisioning

18. Towards a Kind of „Efficiency Management” 4 Peers α β λ μ Parameters f( α , β )=…= x g( λ , μ )=…=y h( α , λ )=…=z Models Interpreted state Architecture Choose priorities Efficiency Management Architecture Analysis, Modeling and Interpretation Using Info. to Gain Efficiency

31. Questions? Kalman Graffi Peer-to-Peer Research Group Dept. of Electrical Engineering and Information Technology Multimedia Communications Lab · KOM Merckstr. 25 · 64283 Darmstadt · Germany Phone (+49) 6151 – 16 49 59 Fax (+49) 6151 – 16 61 52 [email_address] Further information: http://www.KOM.tu-darmstadt.de/ Publications: http://www.KOM.tu-darmstadt.de/Research/Publications/publications.html