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Handling Oracle PMDA Latencies

To: pcp developers <pcp@xxxxxxxxxxx>
Subject: Handling Oracle PMDA Latencies
From: Marko Myllynen <myllynen@xxxxxxxxxx>
Date: Wed, 23 Mar 2016 10:35:13 +0200
Delivered-to: pcp@xxxxxxxxxxx
Organization: Red Hat
Reply-to: Marko Myllynen <myllynen@xxxxxxxxxx>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.7.0
Hi Nathan,

I might have a chance to test the Oracle PMDA in the near future, then I
can probably do some real hands-on experiments in a realistic
environment but one question I already have is related to latencies: the
Oracle node is often heavily loaded and sometimes when things don't work
perfectly load might be extreme, there might be swapping, and so forth.
So requests for Oracle performance stats can take several seconds.

How does the Oracle PMDA cope with this so that PMCD won't kill it?

Thanks,

-- 
Marko Myllynen

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