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Re: [xsl] Using Saxon 2.0 with FOP, XEP, Antenna House
Subject: Re: [xsl] Using Saxon 2.0 with FOP, XEP, Antenna House From: Jesper Tverskov <jesper@xxxxxxxxxxx> Date: Sat, 19 Oct 2013 14:14:21 +0200 |
Hi Michael I have made some C# code with 1000 input file names in an array (just the same file for this test), I then made 1000 transformations in a for-each loop and generated 1000 xslfo.xml files. "-repeat:1000" predicted 8ms on average. It took around 17s to create 1000 xmlfo files in .NET API It took around 17s to create 3 xmlfo files at the command line. I now need to get the FO-processor into the loop. Please allow me one more question: I have noticed that FO processors like FOP and Antenna House, both use the XSLT processor indirectly, build-in so to speak, probably in order to avoid the need for specifying both processors at the command line and getting two start-up times? For the same reason if speed counts at the command line, both processors should be made with the same programming language? Regards Jesper On Fri, Oct 18, 2013 at 9:59 PM, Michael Kay <mike@xxxxxxxxxxxx> wrote: > > On 18 Oct 2013, at 10:34, Jesper Tverskov wrote: > >> Hi Michael >> >> When I do a Saxon transformation to XSLFO at the command line, my file takes: >> >> a) Stopwatch time: 7.5s. >> >> The "-t" tells me that: >> >> b) Stylesheet compilation time: 2398ms >> c) Building tree input file: 86ms >> d) Execution time: 531ms. >> >> Does it mean that: >> >> e) start-up time = a - (b+c+d) > > No, because the VM warms up gradually: it loads classes as they are needed, and the hotspot compiler gradually speeds up the most frequently executed code, learning as it goes. So there's still a lot of "warm-up" happening after Saxon starts the clock. To get timings that eliminate warm-up overhead, you need to use the -repeat option - for something that takes 7s, I would start with -repeat:20. >> >> Am I right that when doing 1000 transformations with the .NET or Java >> Interface, I only have 1 start-up time and 1 compilation time? And >> 1000 times c + d? > > Yes to the first question. To the second, it will probably be rather faster because the first transformation always takes much longer than subsequent ones. >> >> Also I have tested the loading of a directory and output to directory >> feature at the command line in Saxon. It works well, but I don't >> think, I can get a FO-processor to take over such an output directory >> as input to the FO transformation from within the bat file. >> > Other possibilities are to organize the processing using XProc, xmlsh, or ant; or to write custom control logic in Java; or to write it in XSLT, with a stylesheet that uses the collection() function to process many input files. > > Michael Kay > Saxonica
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Re: [xsl] Using Saxon 2.0 with FOP,, Michael Kay | Thread | Re: [xsl] Using Saxon 2.0 with FOP,, Tony Graham |
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