[Oslc-pm] OSLC-PM and Web Applicaitions

[Boris Kuschel]

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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