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MMV questions

To: Max Matveev <makc@xxxxxxxxx>
Subject: MMV questions
From: Nathan Scott <nscott@xxxxxxxxxx>
Date: Fri, 12 Jun 2009 14:35:02 +1000 (EST)
Cc: pcp@xxxxxxxxxxx
Hey Max,

Few questions for you, now we've started looking into using
the MMV library + agent a bit here.

- how does one create an instantaneous value?  (like, number
  of users, length of a queue, etc).
- what is the MMV_ENTRY_DISCRETE type?  (seems to become a
  PM_SEM_DISCRETE metric that changes and has some state
  associated with it?)
- was there are pmdammv(1) man page at any point?
- did you consider string values?  (no support currently, afaict,
  but did you have a design in mind for implementing that?)

More will follow as we dig deeper.  We'll probably produce a
Perl binding for exercising the API easily, and instrumenting
Perl scripts, as well as a Java language implementation of the
client side of things (which we plan to use for some production
monitoring).

thanks!

-- 
Nathan

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