On 31/03/2016 07:01 PM, David Crayford wrote:
When a stop the world event happens watch those zIIPs spike! I've
been amused watching the RMF zIIP metrics in Grafana.
Which garbage collection option do you use? Have you played around with
different GC options? I have found it can make a big difference. (For my
programs the default gencon seems best. Optthruput was terrible.)
One of the difficulties in figuring out GC is that most of the
information seems to assume the most important thing is trying to
minimize the stopped time, hence multithreading, concurrent GC etc. Not
so helpful if what you really want is to minimize total CPU consumed
e.g. batch on z/OS.
--
Andrew Rowley
Black Hill Software
+61 413 302 386
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