profile under JZOS

[elukaweski]

Hi. We are trying to figure out to profile java applications that run under JZOS. Can't seem to find any information of profiling on z/os.

Would anybody have any suggestions?

thanks,
Edwin

[dovetail]

Take a look at the latest version of the JZOS Cookbook (which we wrote).
It has two chapters on profiling that should help you.

http://www.alphaworks.ibm.com/tech/zosjavabatchtk

Between the two tools discussed in the book, I would look at JIP first, since it is easier to use and has much less overhead than JInsight, which traces all method calls.

[elukaweski]

Thank you for the quick response. I have looked at the cookbook and it is a great resource. And I will get the JIP software.

I don't see anything about memory usage (heap) profiling. Any suggestions for this aspect?

Thanks,
Edwin

[dovetail]

IBM has a heap analyzer tool as part of the "IBM Support Assistant", although I haven't had the best luck with it in terms of tracking down leaks. It might be OK for profiling, but I'm not that familiar with it.

Its a pity that something like "YourKit" isn't available on z/OS.

[elukaweski]

ok...again, thanks for the reply. And for the information.

I've seen something called Agent Controller but can't seem to find it for z/OS. It's available from the Eclipse tptp project for window and linux.

Thnaks again
Edwin