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NDT Administrator Tools. Jakub Slawinski Rich Carlson Internet2 Fall Member Meeting October 9, 2007. NDT Attributes. Users self-test using Java based client - PowerPoint PPT Presentation
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Presenter’s Name
NDT Administrator Tools
Jakub Slawinski <[email protected]>Rich Carlson <[email protected]>
Internet2 Fall Member MeetingOctober 9, 2007
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NDT Attributes
• Users self-test using Java based client
• Test results contain details about the test including indications about what could be wrong
• Server automatically logs basic test results
• Server can also log more detailed results for post-processing tasks
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Post Processing Tasks
• Allow site administrators to find problems effecting multiple clients
• Allow site administrators to verify that problems have been resolved
• Allow developers to experiment with new detection algorithms
• Allow developers to quickly test new features
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NDT Post Processing Tools
• Genplot– Simply program to display Web100 data
• Testing FrameWork (TFW)– Set of python scripts to automate testing
• JAnalyze– Java based version of Analyze program
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Genplot
• Simple program to post-process Web100 data
• Reads Web100 snaplog files
• Textual display of requested variables
• Graphical display of requested variables
• Run time flags allow quick access to common variables
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Genplot – Textual Display
• ‘genplot -tmCurCwnd,SlowStart,CongAvoid,CongestionSignals fn | less’
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Genplot – Graphical Display
• ‘genplot –C fn; xplot fn.xpl’
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TFW
• Set of python scripts to centralize and automate testing
• Generate various data streams with configurable Bandwidth Utilization
• Future Enhancements• Automatic NDT client/server start-up• Automatic fetching of test results
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TFW – adding traffic
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JAnalyze
• Java GUI replacement for old Analyze program
• Reads web100srv.log file for input
• Filters can be applied to limit selection
• Clicking on client address brings up test details
• Xplot graphs for Web100 and TCPDUMP files easily available
• Server CPU utilization graphs available
• Rapid prototyping of new analysis algorithms
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JAnalyze
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JAnalyze - Filters
• Limit client list based on– Client IP address– Fault condition (Duplex Mismatch, Congestion, …)
• Allows site administrators to quickly – Find problems effecting multiple users– Determine when a problem has been resolved
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JAnalyze - Web100 Data
• Simple printing/plotting of Web100 data using the genplot tool– Display user defined variables– Single click to display CurCwnd vs time plot– Textual display in scrollable window
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JAnalyze - TCPDUMP
• Simple printing/plotting of TCPTrace data– Single click to display server-to-client TCP
throughput graph (“tcptrace –S” xplot)– Single click to display textual information
(“tcptrace –l” data)
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JAnalyze - CPU Utilization
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JAnalyze – New Analysis
• Rapid prototyping of new analysis algorithms
• Currently working on ‘Congestion Detected’ algorithm
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JAnalyze - Demo
• The presentation will stop and I will demo the various components of the JAnalyze tool
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Gotcha’s
• NDT-3.4.4 requires unixODBC-devel package
• JAnalyze requires SUN Java SDK package
• Must install xplot• http://www.xplot.org/
• Must install tcptrace• http://jarok.cs.ohiou.edu/software/tcptrace/download.html
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Acknowledgements
• Jakub Slawinski– Google Summer of Code Student has done most
of the coding for the past 2 years. – Developed JAnalyze and TFW tools – Made numerous enhancements to main NDT code
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Conclusion
• Enhanced post-processing tools to aid Administrators– Identify problems that effect multiple clients– Identify when problems have been resolved
• Enhanced post-processing and testing tools to aid Developers– Easy method to generate test data– Ability to rapidly experiment with new detection
algorithms
