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Re: [pS-dev] Re: LS API problem - mailing list 25 Feb 2009


Chronological Thread 
  • From: Jason Zurawski <>
  • To: Nina Jeliazkova <>
  • Cc: , perfSONAR developers list <>,
  • Subject: Re: [pS-dev] Re: LS API problem - mailing list 25 Feb 2009
  • Date: Sat, 30 May 2009 14:59:54 -0400
  • Organization: Internet2

Nina;

The mentioned bug did not address the known IP summarization problems. There is active work going on at UDel to address that particular problem but it has not been incorporated into new releases of the hLS or gLS.

It would be good to record the perfSONAR-UI specific use case (e.g. trying to find utilization data by IP address) as well as other potential use cases both for GUIs and APIs as a next step. This will require input from users and developers across the perfSONAR spectrum.

We have started a partial list of "Information Service Use Cases" here as an example of what should be considered:

https://spaces.internet2.edu/display/ISWG/Use+Cases

Thanks;

-jason


According to my records there was a bug found and fixed in March
(http://code.google.com/p/perfsonar-ps/issues/detail?id=109) for both
LS implementations.

Since the Geant2 project was in transition at the time, there has
been no additional communication regarding if this fixes the original
problem
I know. We also changed LS and LS API developers. That's why Krzysztof
would like to go back to this discussion.

with the GUI or APIs or what next steps may be. There have not been
any more discussion regarding requirements or expectations from the
GUI (and Service) developers on how the information architecture may
be improved to answer the appropriate questions, but hopefully this
can be a priority down the road.
I think we would need some hints here from psUI developers. The goal
should be to make the information provided by LS cloud components
(including API) useful for user and tools including performance and
accuracy expectations.

How would you suggest to proceed? May be should (re)run some tests?
What kind?
I've rerun the test
(org.perfsonar.perfsonarui.test.ls.TracerouteTest#testNewLookup() ) . It
tries to retrieve MA services, containing utilization data for the
following IP addresses.

"150.254.185.146",// (PIONIER)
"192.5.40.187",
"212.191.224.74",
"194.141.0.10"// (BREN)

The result is ESnet MA is found as a response to the request for
150.254.185.146 and 192.5.40.187 . The full perfsonar.log with
requests/response is attached.

[ESnet SNMP MA] 150.254.185.146 N/A N/A
ESnet SNMP
MA,http://ps3.es.net:8080/perfSONAR_PS/services/snmpMA,http://schemas.perfsonar.net/2.0,,http://ggf.org/ns/nmwg/characteristic/utilization/2.0
[ESnet SNMP MA] 192.5.40.187 N/A N/A
ESnet SNMP
MA,http://ps3.es.net:8080/perfSONAR_PS/services/snmpMA,http://schemas.perfsonar.net/2.0,,http://ggf.org/ns/nmwg/characteristic/utilization/2.0
[] 212.191.224.74
[] 194.141.0.10

Best regards,
Nina

Regards,



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