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Paradigms & Benchmarks Ryan McCune CSE 60641 Final Presentation 11/3/11 Notre Dame Computer Science 1.

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Presentation on theme: "Paradigms & Benchmarks Ryan McCune CSE 60641 Final Presentation 11/3/11 Notre Dame Computer Science 1."— Presentation transcript:

1 Paradigms & Benchmarks Ryan McCune CSE 60641 Final Presentation 11/3/11 Notre Dame Computer Science 1

2 Current Environment 11/3/11 Notre Dame Computer Science 2 Performance + Scalability

3 11/3/11 Notre Dame Computer Science 3 Thread / Message-Passing Duality Threads Good Intuitive Abstraction Fundamental concurrency Bad Threading hard Always complex SEDA Events Good Non-blocking Minimal overhead Bad Functional Programming less intutive Scheduling Threading vs. Events

4 11/3/11 Notre Dame Computer Science 4 Created by Ryan Dahl of Joynet in 2009 Event-driven server-side Javascript Asynchronous, non-blocking V8 JS Engine Model well-suited for current challenges Reactor Design Pattern Service-oriented architecture

5 Test Bed Hardware 3.06 GHz Intel Core 2 Duo 2 of 4 GB RAM Software VMWare Fusion 4.1.1 Ubuntu Linux 11.10 Node 0.4.12 EventMachine 0.12.10 Apache 2.2.20 [No PHP] 11/3/11 Notre Dame Computer Science 5

6 11/3/11 Notre Dame Computer Science 6 Apache Benchmark utility Variable Total and Concurrent Requests Total [10^3, 10^4, 10^5, 10^6] Concurrent [10^2, 500, 10^3, 5000, 10^4] More interested in concurrency Range determined experimentally VM Okay Run for 1 and 2 cores Experiments

7 11/3/11 Notre Dame Computer Science 7

8 11/3/11 Notre Dame Computer Science 8

9 11/3/11 Notre Dame Computer Science 9

10 Results 11/3/11 Notre Dame Computer Science 10 Events Win? Like Duality + Events/Threads research, must consider system needs What system was modeled? Events handled far more concurrent requests Node >> EventMachine Blocking libraries in Ruby Inconsistent More cores did not help Apache serve more requests

11 Discussion 11/3/11 Notre Dame Computer Science 11 Evented Architecture may be model of the future Cloud Realtime apps Fewer resources Increasing connectivity Web app paradigms Node is exceptional Fully evented bottom-up JavaScript V8 Software Engineering Community Coffeetalk Client v Browser

12 Further Work 11/3/11 Notre Dame Computer Science 12 Vary & Elaborate Experiments Benchmark complex application Database backend SEDA Considerations Simplicity vs. Complexity

13 Thank You! 11/3/11 Notre Dame Computer Science 13

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