I can't see any obvious reason why calling saxon:discard-document()
on the lookup document at the end of processing shouldn't work. It
should certainly make the lookup document available for garbage
collection, and I think that it should also make the index eligible
for gc as well. There's always a possibility that there are some
references to nodes in the lookup document somewhere, however. And
of course, being eligible for garbage collection isn't the same as
being garbage-collected. Have you tried doing a jHat heap analysis?
On 28/02/2012 15:24, David Rudel wrote:
I have an XSL stylesheet that processes many source documents one
at a time. Each source document is related to a separate lookup
These lookup documents are referenced many times, so I have used a
key to speed up the performance.
Unfortunately, I don't know how ask the processor to flush the
memory associated with the indexed lookup table after I am through
I tried key('keyname', 'keyvalue',
saxon:discard-document('lookup.xml')), but that appeared to defeat
the purpose of creating the key in the first place. The
performance was highly degraded, and I can only assume the problem
is that the processor immediately flushes the memory after the
I also tried putting a <xsl:value-of
at the end of each process loop (there is no "/a" node in
lookup.xml), hoping that it would let the processor know that I no
longer cared about look-up.xml. That trick has worked in the past
(e.g., when I needed to use "doc-available" and then had to make
sure afterward that the document was flushed from memory.
"A false conclusion, once arrived at and widely accepted is not
dislodged easily, and the less it is understood, the more
tenaciously it is held." - Cantor's Law of Preservation of
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