Subject: RE: Java performance (Saxon) From: Kay Michael <Michael.Kay@xxxxxxx> Date: Wed, 1 Mar 2000 12:30:53 -0000 |
> Kay Michael wrote: > > > A B C D E > > Saxon 5.2, Sun 9.4 15.9 19.3 20.1 5.3 > > Saxon 5.2, MS 4.9 9.5 11.8 12.9 20.0 > > Saxon 5.3, Sun 7.3 12.3 18.4 18.0 5.8 > > Saxon 5.3, MS 3.1 5.2 19.0 10.8 19.8 > > Is this with the JIT enabled?? Yes. Just to update the picture for anyone who is interested, I've pinned down the anomalous behaviour of stylesheet E to to format-number() function. On Microsoft, the cost of this is linear: 1000 calls take 2163 ms, 16000 calls take 33167 ms. With SUN (now using JRE 1.3 - thanks for the tip) it's better than linear: 1000 calls take 621 ms, 16000 calls take 3265 ms, 128000 calls take 19989 ms. format-number() is implemented using Java classes DecimalFormatSymbols and DecimalFormat. I guess SUN are somehow remembering that the same format pattern is used each time. Don't know how they do it, but it points to another area for possible tuning. Mike Kay XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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