end to end performance initiative russ hobby henp networking working group meeting, ann arbor,...
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End to End Performance InitiativeRuss Hobby <[email protected]>
HENP Networking Working Group Meeting,
Ann Arbor, Michigan
26 October 2001
Context for E2E Performance
Even with high bandwidth network links, the Internet2 community often does not see expected performance.
The Wizard Gap
The E2Epi Mission
To enable the researchers, faculty, students and staff who use high performance networks to obtain optimal performance from the current infrastructure on a consistent basis.
Raw Connectivity
Applications Performance
True End-to-End Experience
•User perception
•Application
•Operating system
•Host IP stack
•Host network card
•Local Area Network
•Campus backbone network
•Campus link to regional network/GigaPoP
•GigaPoP link to Internet2 national backbones
•International connections
EYEBALL
APPLICATION
STACK
JACK
NETWORK
. . .
. . .
. . .
. . .
First Steps
Workshop in Ann Arbor on 9 January, 2001
• 40+ participants• Each participant provided a short paper on “What does E2EPerformance Mean?”
• Planned agenda was not used in order to respond to more pressing issues from participants.
• Design team formed to create an overall vision paper.
The Problem
Applications Developer
System Administrator
LAN Administrator
CampusNetworking
Gigapop Gigapop
Backbone
CampusNetworking
LAN Administrator
System Administrator
Applications Developer
How do you solvea problem along a path?
Hey, this is not working right!
The computerIs working OK
Talk to the other guys
Everything isAOK
No othercomplaints
The network is lightly loaded
All the lights are green
We don’t see anything wrong
Looks fine
Others are getting in ok
Not our problem
7
Areas of the Initiative
Applications
Host/OS Tuning
Measurement Infrastructure
Performance Improvement Environment (PIE)
Operations and Human Communications
Performance Evaluation and Review Framework (PERF)
Applications
•Work with specific application communities to help solve their performance problems.
• High Energy Physics• Medical Sciences – Visible Human Project
•Use a few key, general purpose applications for performance testing.
• FTP• Video Conferencing
Host/OS Tuning
•Web100 has a leading role
•Provide Best Practices for getting the most from your computer.
•Locate or build tools for Host/OS performance diagnostics.
•Work with computer vendors on Internet2 Performance Packages.
Measurement Infrastructure
•Bring together current measurement efforts and projects in the community.
•Establish an End-to-End Measurement Infrastructure from the intersection of these works.
•Create diagnostic tools to determine the health of the network and locate performance problems.
Standard Operational Info
Applications Developer
System Administrator
LAN Administrator
CampusNetworking
Gigapop Gigapop
Backbone
CampusNetworking
LAN Administrator
System Administrator
Applications Developer
Information fromAll Parts of the Network
Ops Info
Ops Info
Ops Info
Ops Info
Ops Info
Ops Info Ops Info
Ops InfoOps Info
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Standard Operational Info
Applications Developer
System Administrator
LAN Administrator
CampusNetworking
Gigapop Gigapop
Backbone
CampusNetworking
LAN Administrator
System Administrator
Applications Developer
Know the Healthof the Network
Ops Info
Ops Info
Ops Info
Ops Info
Ops Info
Ops Info Ops Info
Ops InfoOps Info
End-to-End Analyzer
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Standard Operational Info
Applications Developer
System Administrator
LAN Administrator
CampusNetworking
Gigapop Gigapop
Backbone
CampusNetworking
LAN Administrator
System Administrator
Applications Developer
ApplicationsAdapt to the Network
Ops Info
Ops Info
Ops Info
Ops Info
Ops Info
Ops Info Ops Info
Ops InfoOps Info
End-to-End AnalyzerApps Tuning
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Performance Improvement Environment (PIE)
•Develop a dynamic environment where collaboration and information sharing will happen.
•Identify, collect and disseminate appropriate information for end-to-end related information.
•Include success stories,measurement statistics, reference materials, measurement tool documentation.
•Include pointers to materials already developed by other communities.
E2Epie – Current Status
• Developing web site content to reflect recommendations of the Design Team and Consultant documents.
• http://www.internet2.edu/e2epi/
• Actively looking for supporting materials and resources to include in web site.
• Mail to: [email protected]
E2Epie – next steps
• Begin collecting stories.• Using interviews and other channels we will begin collecting
stories about performance improvement issues.
• We will work with EDUCAUSE Effective Practices and Solutions database for publishing the E2Epi stories.
• Identify and collect information about projects, resources, and tools.
• With help of Technical Advisory Group and other E2Epi participants we will make sure to have up-to-date and correct information.
• Explore resources and tools for collaboration efforts.• Discussion forum: http://e2edev.internet2.edu/discus/
Operations and Human Communications
Establish communications among common interest groups
• System administrators• LAN administrators• Campus NOCs• GigaPoP• Application support staff
Establish communications between groups for operations and problem resolution.
Groups of Common Interest
Applications Developer
System Administrator
CampusNetworking
Gigapop Gigapop
Backbone
CampusNetworking
LAN Administrator
System Administrator
Applications Developer
Provide a means of communications
Let them shareexperiences.
I don’t know how to solve this problem! I do! I do!
LAN Administrator
Find a Solution?
Applications Developer
System Administrator
LAN Administrator
CampusNetworking
Gigapop Gigapop
Backbone
CampusNetworking
LAN Administrator
System Administrator
Applications Developer
A System to Check aSpecific Problem
Hmm, Time to Check the PIE and
Talk to others
Performance OK here
Throughput OK
Everything isStill AOK
Not a bottleneckAt this point
The network is still lightly loaded
All the lights are green
We don’t see anything wrong
Yup. DuplexDoes notAgree!
It is slow for others too!
Ah ha, an Ethernet Duplex
problem!
Can You Go Direct to the Problem?
How can you tell where is the problem?
Need a tool to tell you:• Where the problem is.• The type of problem• Who to contact to get it fixed
Terry Gray, University of Washington“We Need a Finger Pointing Tool”
Gray Finger Pointing Tool
Applications Developer
System Administrator
LAN Administrator
CampusNetworking
Gigapop Gigapop
Backbone
CampusNetworking
LAN Administrator
System Administrator
Applications Developer
Locate the ProblemGray Finger Pointing ToolTerry GrayUniversity of Washington
Finger Pointing Tool Time!
Gray Finger Pointing Tool
Applications Developer
System Administrator
LAN Administrator
CampusNetworking
Gigapop Gigapop
Backbone
CampusNetworking
LAN Administrator
System Administrator
Applications Developer
Finger Pointing Tool Time
You ARE the Weakest Link!
OK, I’ll fix it
Performance Evaluation and Review Framework (PERF)
Establish a framework for resolving performance problems
• Provide known solutions by using the PIE• Tap community knowledge by facilitating group communications
• Coordinate a team of experts to solve hard problems
The Hard Problems
Applications Developer
System Administrator
LAN Administrator
CampusNetworking
Gigapop Gigapop
Backbone
CampusNetworking
LAN Administrator
System Administrator
Applications Developer
What if no one has the answer?
Hey, Its is not working again!
I don’t know what is wrong
No clue here
I’m stumped
This is strange
It looks normal here
Doh!
We can’t figure it out
I amCluefully
Challenged
Others are getting in ok
I don’t know
Need a Tiger Team of Experts to Research the Problem
Internet2 Organization Role
Staffing• Cheryl Munn-Fremon, Initiative Director• Russ Hobby, Technical Architect• George Brett, Information Architect• Lisa Wilberding, Communications Coordinator• Terri Saarinen, Program Assistant
Internet2 Organization Role cont’d.
Funding• Facilitate seeking sources of funding• Internet2 will invest about $1.5 million per year
Communications coordination• Web site• Workshops, meeting presentations, …
Anticipated Partners
Campuses
Faculty and discipline communities
GigaPoPs
International partners
NSF-sponsored engineering efforts • NLANR, www.nlanr.net• Web100 Project, www.web100.org
Internet2 corporate members
Federal labs and agencies
Calls For Participation
Identify core applications and services
Seek participants in the various work areas
Seek stories and best practices
Issue later this Fall
Success Criteria
•Community is involved and integrating what is learned
•Performance Improvement Environment (E2Epie) provides satisfactory resources to the community
•Operational environment meets the needs of application users and supporters
•End-users understand what to expect and how to get it
For More Information
http://e2edev.internet2.edu/discus/index.html
http://www.internet2.edu/e2e/
www.internet2.edu