XOM API for Processing XML with Java

[Elliotte Harold <elharo AT metalab.unc.edu>]

Wolfgang Hoschek wrote:
> BTW, converting a XOM document to a DOM document is currently twice as 
> slow as it was in xom-1.0d25 (which was before the non-recursive 
> "experiment"):
>
> DOMConverterCVS:
> Builder.build took [s] = 41.969
> xom -> dom took [s] = 43.072
> dom -> xom took [s] = 28.727
>
> DOMConverterD25:
> Builder.build took [s] = 39.113
> xom -> dom took [s] = 22.135
> dom -> xom took [s] = 28.608

I whipped up a variation on this problem based on the same data you 
sent. My G5 can do the conversion in under 20 seconds, so Moore's law 
has already fixed this problem. :-)

Seriously, one thing I did notice was that this system uses a lot of 
memory. With Xerces as the DOM implementation both the XOM and the DOM 
models take about 4-5 times the actual size of this document so it's 
possible you're getting some garbage collection pauses or VM thrashing. 
How much memory did you allocate to this?

I'll see if I can find any other hot spots.

--
Elliotte Rusty Harold
elharo AT metalab.unc.edu