Performance of New Servers @ the ACL

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• Performance of New Servers _at_ the ACL

Cesar Cavazos Accounting Information Technology
(AIT)
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Agenda

• Introduction / Problem Description
• Background Information
• Possible Solutions
• Solution Chosen
• Testing / Analysis
• Future Work / Conclusion

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Problem Description

• Large Number of Students
• Problems with old servers
• New Servers
• 18 new Poweredge 2650 servers
• 3.2 Ghz
• 4 Gigs of Ram
• Help CS Department

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Background Information

• Dr Baker, Dr. Camden, Alberto Alonso
• Always had the interest in testing servers
• Limited experience working with servers
• Performance is a way too broad test
• Network bandwidth testing
• Other testing done

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Possible Solutions

• Different tools out there
• Silkperformer
• LoadRunner
• TestStudio
• WCAT
• JMeter
• Cost of each testing tool
• Limitations

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Solution to Problem

• Use JMeter to test performance
• Java Application
• Simulate Heavy Load on Server
• Performance of Static and Dynamic Resources
• FTP Testing
• Easy to use GUI
• Graphical Analysis of Results

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JMeter Interface
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Generating Testing Files
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Testing Website
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Uploading Data to Server
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Checking for Errors
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Testing Different Combinations
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Results of Project
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Results Analysis

• Software installed preventing more than 100
  connections
• NFS (Network File System) crashed before
  webserver. (150 connections)
• Currently running NFS version 2
• Many limitations compared to version 3
• In the process of being installed
• Lab Administrator surprised about NFS acting as a
  bottleneck

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Future Work

• Be able to run JMeter as a Webapp using Tomcat.
• Test the SFTP server (when JMeter implements that
  option)
• Test the servers when they install NFS version 3
  and check performance

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Conclusion

• There are many limiting factors involved
• Jmeter itself
• Fact that it is a single computer
• No tool can really simulate x number of
  different users from one computer
• NFS Protocol

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Questions?