XOM API for Processing XML with Java

[Wolfgang Hoschek <whoschek AT lbl.gov>]

Improves by some 12%. The benchmark was given in the mail: download the 
document contained in the zip file, and run deserialization with the 
nux BinaryXMLTest. BinaryXMLTest is also good for simulating and 
benchmarking a program generating a XOM tree in memory, via the normal 
XOM Node constructors.
Actually, now that I say it, it perhaps only applies to my latest nux 
CVS version, which has some more performance improvements, the result 
being that it increasingly turns up more and more XOM hotspots. I you 
want it, let me know and i'll send you a snapshot.

The other thing is that some days ago I submitted performance patches 
for URI and PCDATA checks in Verifier. They slighly restructure the 
algorithms, reducing memory allocation, some unnecessary calculations, 
and making the methods shorter and easier to inline.

These are actually much more important than the Attributes patch. Safe 
some 30% is some cases. Did you have a look at those? You can get them 
at http://dsd.lbl.gov/~hoschek/xom-patches

Wolfgang.

On Nov 22, 2004, at 2:48 AM, Elliotte Harold wrote:

> This looks plausible, and there's certainly no reason not to apply it 
> (doesn't affect the correctness of code or anything) so I'll probably 
> just go ahead and integrate it, but for performance issues in general, 
> it's really helpful if you can provide a benchmark that demonstrates 
> the problem so I can actually measure the effect and integrate it into 
> future tests.
>
> --
> Elliotte Rusty Harold  elharo AT metalab.unc.edu
> XML in a Nutshell 3rd Edition Just Published!
> http://www.cafeconleche.org/books/xian3/
> http://www.amazon.com/exec/obidos/ISBN=0596007647/cafeaulaitA/ref=nosim