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

2016-11-09 07:01:57
I remember at some stage doing some work to ensure that saxon:next-in-chain 
released memory from one stylesheet before running the next, but I haven't 
checked that this is the case today, and there have been considerable changes 
in the way it's implemented. And in any case 9.1 is a pretty old release. I 
would encourage you to use a different pipelining technology, for example XProc.

Michael Kay
Saxonica


On 9 Nov 2016, at 12:57, Frederik Fouvry 
frederik(_dot_)fouvry(_at_)acrolinx(_dot_)com 
<xsl-list-service(_at_)lists(_dot_)mulberrytech(_dot_)com> wrote:

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

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