On 18/06/2020 8:01 pm, David Crayford wrote:
Interesting! The Java program probably is probably much faster because
it runs on a full capacity zIIP. At my shop we run an enterprise class
machine and I don't see the same results. It's very difficult to
measure Java vs native when the gcp's also run full capacity.
Can you share some of your SMF reports?
The GCPs are full capacity, or whatever we get on the Dallas RDP system.
It doesn't appear to be CPU bound at all. I think cp takes twice as long
because it opens and closes the file twice for every member vs once in
the Java program.
One thing I am convinced of is that open and close in the unix
filesystem is much faster than open and close of MVS datasets. Even more
so when you factor in enqueues.
I'll see if I can put together some SMF reports.
--
Andrew Rowley
Black Hill Software
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
