Quotes cached at Active Nodes on client to server path Subsequent requests

Quotes cached at active nodes on client to server

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Quotes cached at Active Nodes on client-to-server path Subsequent requests intercepted to consult local cache Caches automatically lie on the path between client/server u Do not redirect requests to caches in wrong direction Application-specific cache coherence u Different clients have different requirements for “freshness” (Potential) Benefits: u Decrease client latency u Decrease the traffic at routers u Decrease server load 5 CSE 222A – Lecture 5: Active & Overlay Networks
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Code Propagation 6 CSE 222A – Lecture 5: Active & Overlay Networks
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Performance Discussion 1999 PC-based routers able to forward 200,000 pkt/sec u Reaching 1 Gbps at typical packet sizes Modern commodity routers forward 160,000,000 pkt/sec/port u At least 100 Gbps, maybe higher u Factor of 10-100 better than PC’s per port Active Networks (1999 numbers) limited by Java, user-level implementation, safety, general-purpose routines u 1700 capsules/sec, 16 Mbps on Sun Ultra 1 u Latencies range from 500-700 us u Related effort (PAN) forwards 100 Mbps w/kernel support 7 CSE 222A – Lecture 5: Active & Overlay Networks
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Active Node Throughput 8 CSE 222A – Lecture 5: Active & Overlay Networks
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Active Node Latency 9 CSE 222A – Lecture 5: Active & Overlay Networks
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Overheads 10 CSE 222A – Lecture 5: Active & Overlay Networks
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Rethinking Performance
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  • Fall '08
  • Vahdat,A
  • Multicast, Active Networks

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