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From "Dennis Sosnoski (JIRA)" <j...@apache.org>
Subject [jira] Commented: (AXIS2-172) Axis2 Performance Check
Date Mon, 06 Feb 2006 03:33:22 GMT
    [ http://issues.apache.org/jira/browse/AXIS2-172?page=comments#action_12365233 ] 

Dennis Sosnoski commented on AXIS2-172:
---------------------------------------

Taking a look at the current AXIOM code, I can guarantee that the memory usage is going to
be considerably higher than any of the standard document models for whatever portion of the
tree actually gets built. The OMNodeImpl class alone has 4 object references, and int, and
a boolean, for a minimum size of 21 bytes. The OMElementImpl class adds another 6 object references
and 2 ints, for a mimum size of 53 bytes. OMTextImpl adds 7 object references and 2 booleans
to OMNodeImpl, for a minimum size of 52 bytes. These are much larger than the equivalent classes
from standard document models (JDOM, for instance, has 6 object references in its Element
class, for a minimum size of 24 bytes, and just 2 object references in its Text class, for
a minimum size of 8 bytes).

Do you still have the XMLBench code you used for testing the M1 AXIOM? It's probably a good
idea to try another test run as we're nearing the 1.0 release.

> Axis2 Performance Check
> -----------------------
>
>          Key: AXIS2-172
>          URL: http://issues.apache.org/jira/browse/AXIS2-172
>      Project: Apache Axis 2.0 (Axis2)
>         Type: Wish
>     Reporter: Eran Chinthaka
>     Priority: Minor

>
> We had a performance and profiler check on Axis2 when we released M1. But after that
we couldn't do it. 
> For testing AXIOM, we used Sosnoski's XML bench.
> IMO, its better to do these again, before we release 1.0.

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