Parfait via -javaagent option

Nathan Scott

21/11/13 16:01

Hi guys,

Does anyone know if its possible (or easily achievable) to use Parfait in an application via one of the java command line options? (javaagent seems a good candidate)? I suspect this would significantly lower the bar for entry for anyone wishing to try out Parfait. There'd be no application-specific metrics this way, just the JVM metrics and perhaps some of the other odds-and-ends like Tomcat, but it would get people started.

Is javaagent the right approach? (or agentlib, or...?)
http://javahowto.blogspot.com.au/2006/07/javaagent-option.html ... we don't have any of the magic glue layer discussed there, right?
I imagine a "name" option would need to be passed through via the command line, but that seems doable too...

cheers.

--
Nathan

Re: Parfait via -javaagent option

tallpsmith

21/11/13 16:32

In the current Parfait form, don't easily just 'happen' without some initial setup still, one has to poke it (and quite a bit right now) to get things started. Yes, this is where the javaagent option on the command line effectively could 'bootstrap' the initialization. This is what AppDynamics/NewRelic do.

Still need some configuration items locally probably (maybe in built defaults can suffice).

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Re: Parfait via -javaagent option

Nathan Scott

24/11/13 16:17

Hi Paul,

OK, good to know - thanks.

Any scope for one of the Java gurus over your way to tackle this one? Else it's in our backlog now, we'll get to it eventually & send through some patches. I will be in touch before any work starts, in case someone else has a crack first though.

cheers.

--

Nathan

Re: Parfait via -javaagent option

tallpsmith

26/11/13 14:05

right now, we've got zero scope to even upgrade our PCP build in production... :-| Never seen so many projects going on at once.

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Re: Parfait via -javaagent option

Nathan Scott

27/11/13 20:53

No worries at all.

I'm scanning through the code, looking, but not finding - is there an example or some test code in the repo (or anywhere else publicly available?) which gives code for exporting the JVM metrics? (IIRC: jvm.compilation, memory.* - garbage collection counts, times, for the various memory areas - jmsmsgs.*, jdbc.* metrics even?).

If not, any chance someone could send through some pointers / sample code?

Thanks!