[xsl] saxon:next-in-chain and memory usage

["Frederik Fouvry frederik.fouvry@xxxxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

Hello,

I am running a pipeline of XML transformations over an XML file of about 
130Mb, using Saxon 9.1.0.5J and Java 1.8.0_112.  The pipeline is 
implemented using saxon:next-in-chain.  It works fine as long as I have 
fewer than about five steps, but when I have five or more, then Java 
runs out of memory, regardless of the complexity of the style sheets (as 
the simplest, I tried the identity transformation). Is this to be 
expected?  Is the result of each step kept in memory? Or is it due to 
something else?

Giving Java more memory seems to help in some cases, but because the 
size of the file can vary a lot (mostly it will be smaller, but in some 
cases, it may be bigger), that is not a scalable solution.

Many thanks,

Frederik Fouvry