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MQSeries.net Forum Index » WebSphere Message Broker (ACE) Support » Propagate first or after Stylesheet node - Performance?

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klabran
PostPosted: Thu Mar 30, 2006 7:18 am    Post subject: Propagate first or after Stylesheet node - Performance? Reply with quote

Master

Joined: 19 Feb 2004
Posts: 259
Location: Flagstaff AZ
I have a large incoming XML file that in my current flow uses ESQL entirely to transform to the output format. The incoming XML file is a batch of records that are propagated during this transformation.

I am developing a new version. The new version's output XML has changed dramatically. I have a stylesheet now that will perform most of the transformation. I will still need ESQL to do some of the transformation and setup my route to labels.

Question?

Should I let the stylesheet do the transformation to the large file and then pass it on to my compute node that will complete the work and then propagate the batch records...

OR

Should I setup a compute node to propagate the messages first and then send them through the stylesheet node?

My biggest concern at this point is performance. Will firing off the stylesheet node 100 times ( for each record in the batch) be worse or better than one large execution?

Thanks,
Kevin
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wschutz
PostPosted: Thu Mar 30, 2006 12:23 pm    Post subject: Reply with quote

Jedi Knight

Joined: 02 Jun 2005
Posts: 3316
Location: IBM (retired)
Well, firstly I hope you're planning on a 64 bit machine using Broker V6. Aside from general improvements in performance, there's this:
Quote:
The ability to now cache a compiled XML stylesheet in WebSphere Message Broker
V6 has improved message throughput when compared with WebSphere Business
Integration Message Broker V5 which did not have this capability.
The performance reports show a significant improvement in XML transforms using style sheets over V5 of the broker.

I'm not sure there's a "canned" answer to your design question, other that "try it out and see what works best for you". I suspect it depends on what you mean by "large incoming XML file".

btw..are you loding the entire file into a message, or using the file input nodes, or something else?
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-wayne
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klabran
PostPosted: Thu Mar 30, 2006 12:48 pm    Post subject: Reply with quote

Master

Joined: 19 Feb 2004
Posts: 259
Location: Flagstaff AZ
These batches are typical between 100KB to 150KB each. Typically about 40-50 records per batch.

I put these batches unto a queue for processing as a string/blob message.

I don't have the file input nodes.
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