[Oslc-pm] OSLC-PM and Web Applicaitions

[John Arwe]

This use certainly sounds compatible on the surface.
With respect to specific metrics, I don't know of any specific scenarios 
in-scope for this spec version.  Have you done a gap analysis, e.g. tried 
to lay out that data using the current draft to see what does not fit 
obviously?  If the gap is considered "small enough", the WG might 
conceivably elect to add scenario(s) in this version and cover them.  If 
it's not, there's always the next spec version as a catcher for the 
scenarios, assuming they get prioritized highly enough by the WG.
It might be that terms from other vocabularies are needed (you might look 
at CRTV under the Reconciliation WG), but that's standard procedure not an 
impediment of any kind.

Best Regards, John

Voice US 845-435-9470  BluePages
Tivoli OSLC Lead - Show me the Scenario




From:   Boris Kuschel <kuschel at ca.ibm.com>
To:     oslc-pm at open-services.net
Date:   11/30/2012 04:18 PM
Subject:        [Oslc-pm] OSLC-PM and Web Applicaitions
Sent by:        "Oslc-Pm" <oslc-pm-bounces at open-services.net>



HI,

We are intending to using the OSLC-PM (and associated specs) to provide 
performance data for a OSGi-based web application (the same concepts apply 
to J2EE). I notice that there is a lot of metrics relating to OS, a few 
about JVM (more around the specifics of the GC would be nice, nursery, 
perm space,etc.) but there is general lack of metric details regarding web 
requests. There are a few tempting predicates (Process, ServiceInstance) 
that almost hit the mark but not quite.

Consider the following scenario: I have a system running a web application 
for which I wish to understand health status. There is a general slow down 
in the system and I expect to be able to understand where the slowdown is 
occurring. I would like to be able to pull down metrics information and 
see the following:

Active/Most consuming requests (or some amount):
->User Session, user, age, language, agent
-->HTTP Request: type, time spent, cpu cycles consumed, bytes sent, bytes 
received
---> Service Invoked: time spent, cpu cycles consumed
-----> Activities (SQL, triple store, external service, etc.): 
description, time spent, cpu cycles consumed
------> Services Invoked... etc.

Is there consideration to make this information as part of the OSLC-PM 
vocabulary?

Thanks,

Boris Kuschel
Software Architect
Smarter Server - IBM Software, Rational
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