Saxon-J 9.1.0.8 vs Saxon-EE 9.7.0.4

identity.xsl

<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

  <xsl:output method="xml" version="1.0" encoding="utf-8" indent="yes"/>

  <xsl:template match="@* | node()">
    <xsl:copy>
      <xsl:apply-templates select="@* | node()"/>
    </xsl:copy>
  </xsl:template>

</xsl:stylesheet>

run.sh

# Saxon-J 9.1.0.8
$ time java -cp lib/saxon-9.1.0.8.jar net.sf.saxon.Transform -repeat:1000 -xsl:identity.xsl -s:identity.xsl -o:/dev/null
*** Average execution time over 1000 runs: 1ms
        1.54 real         3.58 user         0.25 sys

# Saxon-EE 9.7.0.4 (default optimization)
$ time java -cp /opt/saxon/saxon9ee.jar net.sf.saxon.Transform -repeat:1000 -xsl:identity.xsl -s:identity.xsl -o:/dev/null
*** Average execution time over last 501 runs: 0.469361ms
        6.76 real        16.53 user         0.63 sys

# Saxon-EE 9.7.0.4 (no optimization)
$ time java -cp /opt/saxon/saxon9ee.jar com.saxonica.Transform -repeat:1000 -xsl:xsl/identity.xsl -s:xsl/identity.xsl -o:/dev/null -opt:0
*** Average execution time over last 501 runs: 0.507004ms
        4.41 real        11.38 user         0.47 sys