There's been no explicit memory profiling done.
I suspect that XMLTask doesn't clear up the XML doc it's been
manipulating. I will check that and rectify.
Note that buffers are persisted across XMLTask calls and so those will
remain. XMLTask will read in the document as a DOM, and due to the
random access nature of XPath and the ad hoc manipulation of XML, I
don't think there's an alternative to that.
What size of docs are you dealing with, and what specifically are you
doing ? With that info I can start to investigate further. Can you
forward me your test detailed below ?
Brian
[EMAIL PROTECTED] wrote:
Hi,
Has anyone tried testing memory usage of xmltask? We run a long build
using Ant with large XML data content. Recently we experienced OOM
errors in our builds. I did some profiling and found that running
xmltask takes a portion of heap memory which does not get garbage
collected. We had the max heap size configured to 200Mb. Increasing
that has allowed our build to proceed further, but it would be helpful
to know if there are any dangling objects not being cleaned up. This
may also be an Ant problem, but specifically the memory increases
seemed to be around the use of xmltask. I wrote a specific test that
simply inserted an element 10000 times into an initially empty
document and this also grew the heap memory over time.
Also has there been any examination of the memory profile of
processing large XML documents? Although most of the memory is garbage
collected, reading a large document as DOM can take many Mbs of memory
temporarily.
Any suggestions most welcome.
thanks
paul
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