Hello, Peter.
I've managed to speed up html generation from xml (make xslthtml) from
32 min. (in my environment) to 4 min. by modifying slowest XSL templates.
All my modifications incorporated in a single file
stylesheet-xhtml-speedup.xsl, which is included in stylesheet.xsl.
I performed optimization by analyzing output of:
xsltproc --profile --stringparam pg.version '9.6devel' stylesheet.xsl
postgres.xml
Initial statistics:
number match name mode Calls Tot 100us Avg
0 appendix label.markup
23090 90677526 3927
1 chapter label.markup
28870 39740757 1376
2 chunk-all-sections 1289 23845066 18498
3 make.legalnotice.head.links
2578 9630258 3735
4 indexterm reference 2579 4126513 1600
5 html.head 1289 3112534 2414
...
index % time self children called name
0.479 1326.034 22/23090 toc.line [61]
5.128 1308.245 21944/23090 sect1[label.markup] [13]
3.772 1318.264 850/23090 substitute-markup [15]
1.355 1304.631 274/23090
figure|table|example[label.markup] [32]
[0] 47.95 906.775 1.613 23090 appendix[label.markup] [0]
1.613 0.000 23090/23090 autolabel.format [29]
-----------------------------------------------
5.128 1308.245 24708/28870 sect1[label.markup] [13]
0.479 1326.034 130/28870 toc.line [61]
3.772 1318.264 2112/28870 substitute-markup [15]
1.355 1304.631 1920/28870
figure|table|example[label.markup] [32]
[1] 21.01 397.408 1.613 28870 chapter[label.markup] [1]
1.613 0.000 28870/28870 autolabel.format [29]
-----------------------------------------------
0.164 238.606 1289/1289 process-chunk-element [98]
[2] 12.61 238.451 0.225 1289 chunk-all-sections [2]
0.225 7.117 1289/1289 process-chunk [86]
-----------------------------------------------
31.125 112.261 1289/2578 html.head [5]
96.303 96.726 1289/2578 make.legalnotice.head.links [3]
[3] 5.09 96.303 96.726 2578 make.legalnotice.head.links [3]
96.303 96.726 1289/3867 make.legalnotice.head.links [3]
0.339 0.494 1289/3867
*[object.title.markup.textonly] [69]
0.085 0.781 1289/3867 ln.or.rh.filename [116]
-----------------------------------------------
Currrent statistics:
number match name mode Calls Tot 100us Avg
0 chunk-all-sections 1289 5405958 4193
1 make.legalnotice.head.links
1289
3159538 2451
2 html.head 1289 3068417 2380
3 gentext.template 689835 2327761 3
4 l10n.language 564453 1455253 2
5 href.target 29881 1344063 44
---
index % time self children called name
0.136 54.207 1289/1289 process-chunk-element [95]
[0] 20.40 54.060 0.312 1289 chunk-all-sections [0]
0.312 6.468 1289/1289 process-chunk [67]
-----------------------------------------------
30.684 45.458 1289/1289 html.head [2]
[1] 11.92 31.595 0.448 1289 make.legalnotice.head.links [1]
0.290 0.403 1289/2578
*[object.title.markup.textonly] [71]
0.159 0.828 1289/2578 ln.or.rh.filename [91]
-----------------------------------------------
0.330 31.617 1289/1289 chunk-element-content [65]
[2] 11.58 30.684 45.458 1289 html.head [2]
31.595 0.448 1289/15462 make.legalnotice.head.links [1]
13.441 4.726 5153/15462 href.target [5]
0.290 0.403 5153/15462
*[object.title.markup.textonly] [71]
0.115 1.576 1289/15462 head.content [99]
0.012 0.000 1289/15462 system.head.content [186]
0.006 0.000 1289/15462 user.head.content [228]
To make sure that result of the transformation is the same, I've
compared original .html's with .html's generated with modified templates.
Unfortunately xslt generates random id's, so it's needed to exclude them
before comparing. I do that with:
for f in */*.html; do sed -e
's/id=\"\(ftn\.\)\?id[a-z][0-9]\+\"/id=\"id\"/g' -i $f ; sed -e
's/href=\"[^#]*#\(ftn\.\)\?id[a-z][0-9]\+\"/href=\"#\"/g' -i $f; done
So if it's acceptable way to speed up generation of HTML (and maybe some
other formats), what other steps should we take to move away from SGML?
If the performance is still not satisfying, please let me know, I'll
continue to optimize xslt.
Beside performance issues, I can see some difference in results of 'make
html' and 'make xslthtml'. For example, see doc/src/sgml/html/spi.html
(xslt-generated version doesn't contain the lists of functions).
Best regards,
Alexander
06.04.2015 23:02, Peter Eisentraut wrote:
On 4/2/15 5:22 PM, Luzanov Pavel wrote:
Peter,
I found this message in archives:
http://www.postgresql.org/message-id/flat/519c3d99.9000...@gmx.net#519c3d99.9000...@gmx.net
and, as you recommend, tested a speed of building docs on a fresh Ubuntu
installation.
50sec for make html
and 14min 50sec for make xslthtml
17 times slower!
Is it still a main stopper for moving to XML?
Yes :)
diff --git a/doc/src/sgml/stylesheet-xhtml-speedup.xsl b/doc/src/sgml/stylesheet-xhtml-speedup.xsl
new file mode 100644
index 0000000..d52b48e
--- /dev/null
+++ b/doc/src/sgml/stylesheet-xhtml-speedup.xsl
@@ -0,0 +1,327 @@
+<?xml version="1.0" encoding="utf-8"?>
+<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
+ version="1.0"
+ xmlns="http://www.w3.org/1999/xhtml";
+ exclude-result-prefixes="#default">
+
+<!-- common/labels.xsl -->
+<xsl:template match="appendix" mode="label.markup">
+ <xsl:choose>
+ <xsl:when test="@label">
+ <xsl:value-of select="@label"/>
+ </xsl:when>
+ <xsl:when test="string($appendix.autolabel) != 0">
+ <xsl:if test="$component.label.includes.part.label != 0 and
+ ancestor::part">
+ <xsl:variable name="part.label">
+ <xsl:apply-templates select="ancestor::part"
+ mode="label.markup"/>
+ </xsl:variable>
+ <xsl:if test="$part.label != ''">
+ <xsl:value-of select="$part.label"/>
+ <xsl:apply-templates select="ancestor::part"
+ mode="intralabel.punctuation"/>
+ </xsl:if>
+ </xsl:if>
+ <xsl:variable name="format">
+ <xsl:call-template name="autolabel.format">
+ <xsl:with-param name="format" select="$appendix.autolabel"/>
+ </xsl:call-template>
+ </xsl:variable>
+ <xsl:choose>
+ <xsl:when test="$label.from.part != 0 and ancestor::part">
+ <xsl:number from="part" count="appendix" format="{$format}" level="any"/>
+ </xsl:when>
+ <xsl:otherwise>
+<!-- speed optimizations for pgsql-docs -->
+ <xsl:number value="count(../preceding-sibling::part/appendix) + count(preceding-sibling::appendix) + 1" format="{$format}" />
+<!-- <xsl:number from="book|article"
+ count="appendix" format="{$format}" level="any"/> -->
+ </xsl:otherwise>
+ </xsl:choose>
+ </xsl:when>
+ </xsl:choose>
+</xsl:template>
+
+<!-- common/labels.xsl -->
+<xsl:template match="chapter" mode="label.markup">
+ <xsl:choose>
+ <xsl:when test="@label">
+ <xsl:value-of select="@label"/>
+ </xsl:when>
+ <xsl:when test="string($chapter.autolabel) != 0">
+ <xsl:if test="$component.label.includes.part.label != 0 and
+ ancestor::part">
+ <xsl:variable name="part.label">
+ <xsl:apply-templates select="ancestor::part"
+ mode="label.markup"/>
+ </xsl:variable>
+ <xsl:if test="$part.label != ''">
+ <xsl:value-of select="$part.label"/>
+ <xsl:apply-templates select="ancestor::part"
+ mode="intralabel.punctuation"/>
+ </xsl:if>
+ </xsl:if>
+ <xsl:variable name="format">
+ <xsl:call-template name="autolabel.format">
+ <xsl:with-param name="format" select="$chapter.autolabel"/>
+ </xsl:call-template>
+ </xsl:variable>
+ <xsl:choose>
+ <xsl:when test="$label.from.part != 0 and ancestor::part">
+ <xsl:number from="part" count="chapter" format="{$format}" level="any"/>
+ </xsl:when>
+ <xsl:otherwise>
+<!-- speed optimizations for pgsql-docs -->
+ <xsl:number value="count(../preceding-sibling::part/chapter) + count(preceding-sibling::chapter) + 1" format="{$format}" />
+<!-- <xsl:number from="book" count="chapter" format="{$format}" level="any"/> -->
+ </xsl:otherwise>
+ </xsl:choose>
+ </xsl:when>
+ </xsl:choose>
+</xsl:template>
+
+<!-- xhtml/autoidx.xsl -->
+<xsl:template match="indexterm" mode="reference">
+ <xsl:param name="scope" select="."/>
+ <xsl:param name="role" select="''"/>
+ <xsl:param name="type" select="''"/>
+ <xsl:param name="position"/>
+ <xsl:param name="separator" select="''"/>
+
+ <xsl:variable name="term.separator">
+ <xsl:call-template name="index.separator">
+ <xsl:with-param name="key" select="'index.term.separator'"/>
+ </xsl:call-template>
+ </xsl:variable>
+
+ <xsl:variable name="number.separator">
+ <xsl:call-template name="index.separator">
+ <xsl:with-param name="key" select="'index.number.separator'"/>
+ </xsl:call-template>
+ </xsl:variable>
+
+ <xsl:variable name="range.separator">
+ <xsl:call-template name="index.separator">
+ <xsl:with-param name="key" select="'index.range.separator'"/>
+ </xsl:call-template>
+ </xsl:variable>
+
+ <xsl:choose>
+ <xsl:when test="$separator != ''">
+ <xsl:value-of select="$separator"/>
+ </xsl:when>
+ <xsl:when test="$position = 1">
+ <xsl:value-of select="$term.separator"/>
+ </xsl:when>
+ <xsl:otherwise>
+ <xsl:value-of select="$number.separator"/>
+ </xsl:otherwise>
+ </xsl:choose>
+
+ <xsl:choose>
+ <xsl:when test="@zone and string(@zone)">
+ <xsl:call-template name="reference">
+ <xsl:with-param name="zones" select="normalize-space(@zone)"/>
+ <xsl:with-param name="position" select="position()"/>
+ <xsl:with-param name="scope" select="$scope"/>
+ <xsl:with-param name="role" select="$role"/>
+ <xsl:with-param name="type" select="$type"/>
+ </xsl:call-template>
+ </xsl:when>
+ <xsl:otherwise>
+ <a>
+ <xsl:apply-templates select="." mode="class.attribute"/>
+ <xsl:variable name="title">
+ <xsl:choose>
+ <xsl:when test="$index.prefer.titleabbrev != 0">
+ <xsl:apply-templates select="(ancestor-or-self::set|ancestor-or-self::book|ancestor-or-self::part|ancestor-or-self::reference|ancestor-or-self::partintro|ancestor-or-self::chapter|ancestor-or-self::appendix|ancestor-or-self::preface|ancestor-or-self::article|ancestor-or-self::section|ancestor-or-self::sect1|ancestor-or-self::sect2|ancestor-or-self::sect3|ancestor-or-self::sect4|ancestor-or-self::sect5|ancestor-or-self::refentry|ancestor-or-self::refsect1|ancestor-or-self::refsect2|ancestor-or-self::refsect3|ancestor-or-self::simplesect|ancestor-or-self::bibliography|ancestor-or-self::glossary|ancestor-or-self::index|ancestor-or-self::webpage|ancestor-or-self::topic)[last()]" mode="titleabbrev.markup"/>
+ </xsl:when>
+ <xsl:otherwise>
+ <xsl:apply-templates select="(ancestor-or-self::set|ancestor-or-self::book|ancestor-or-self::part|ancestor-or-self::reference|ancestor-or-self::partintro|ancestor-or-self::chapter|ancestor-or-self::appendix|ancestor-or-self::preface|ancestor-or-self::article|ancestor-or-self::section|ancestor-or-self::sect1|ancestor-or-self::sect2|ancestor-or-self::sect3|ancestor-or-self::sect4|ancestor-or-self::sect5|ancestor-or-self::refentry|ancestor-or-self::refsect1|ancestor-or-self::refsect2|ancestor-or-self::refsect3|ancestor-or-self::simplesect|ancestor-or-self::bibliography|ancestor-or-self::glossary|ancestor-or-self::index|ancestor-or-self::webpage|ancestor-or-self::topic)[last()]" mode="title.markup"/>
+ </xsl:otherwise>
+ </xsl:choose>
+ </xsl:variable>
+
+ <xsl:attribute name="href">
+ <xsl:choose>
+ <xsl:when test="$index.links.to.section = 1">
+ <xsl:call-template name="href.target">
+ <xsl:with-param name="object" select="(ancestor-or-self::set|ancestor-or-self::book|ancestor-or-self::part|ancestor-or-self::reference|ancestor-or-self::partintro|ancestor-or-self::chapter|ancestor-or-self::appendix|ancestor-or-self::preface|ancestor-or-self::article|ancestor-or-self::section|ancestor-or-self::sect1|ancestor-or-self::sect2|ancestor-or-self::sect3|ancestor-or-self::sect4|ancestor-or-self::sect5|ancestor-or-self::refentry|ancestor-or-self::refsect1|ancestor-or-self::refsect2|ancestor-or-self::refsect3|ancestor-or-self::simplesect|ancestor-or-self::bibliography|ancestor-or-self::glossary|ancestor-or-self::index|ancestor-or-self::webpage|ancestor-or-self::topic)[last()]"/>
+<!-- speed optimizations for pgsql-docs -->
+ <xsl:with-param name="context" select="(/book/index[count(ancestor::node()|$scope) = count(ancestor::node()) and ($role = @role or $type = @type or (string-length($role) = 0 and string-length($type) = 0))])[1]"/>
+ </xsl:call-template>
+ </xsl:when>
+ <xsl:otherwise>
+ <xsl:call-template name="href.target">
+ <xsl:with-param name="object" select="."/>
+ <xsl:with-param name="context" select="(//index[count(ancestor::node()|$scope) = count(ancestor::node()) and ($role = @role or $type = @type or (string-length($role) = 0 and string-length($type) = 0))] | //setindex[count(ancestor::node()|$scope) = count(ancestor::node()) and ($role = @role or $type = @type or (string-length($role) = 0 and string-length($type) = 0))])[1]"/>
+ </xsl:call-template>
+ </xsl:otherwise>
+ </xsl:choose>
+
+ </xsl:attribute>
+
+ <xsl:value-of select="$title"/> <!-- text only -->
+ </a>
+
+ <xsl:variable name="id" select="(@id|@xml:id)[1]"/>
+ <xsl:if test="key('endofrange', $id)[count(ancestor::node()|$scope) = count(ancestor::node()) and ($role = @role or $type = @type or (string-length($role) = 0 and string-length($type) = 0))]">
+ <xsl:apply-templates select="key('endofrange', $id)[count(ancestor::node()|$scope) = count(ancestor::node()) and ($role = @role or $type = @type or (string-length($role) = 0 and string-length($type) = 0))][last()]" mode="reference">
+ <xsl:with-param name="position" select="position()"/>
+ <xsl:with-param name="scope" select="$scope"/>
+ <xsl:with-param name="role" select="$role"/>
+ <xsl:with-param name="type" select="$type"/>
+ <xsl:with-param name="separator" select="$range.separator"/>
+ </xsl:apply-templates>
+ </xsl:if>
+ </xsl:otherwise>
+ </xsl:choose>
+</xsl:template>
+
+<!-- xhtml/chunk-common.xsl -->
+<xsl:template name="chunk-all-sections">
+ <xsl:param name="content">
+ <xsl:apply-imports/>
+ </xsl:param>
+
+<!-- speed optimizations for pgsql-docs -->
+ <xsl:variable name="prev-v1" select="preceding::*[(self::sect1 and $chunk.section.depth > 0) or (self::sect2 and $chunk.section.depth > 1) or (self::sect3 and $chunk.section.depth > 2) or (self::sect4 and $chunk.section.depth > 3) or (self::sect5 and $chunk.section.depth > 4)][1]"/>
+
+ <xsl:variable name="prev-v2" select="(ancestor::sect1[$chunk.section.depth > 0 and not(ancestor::*/processing-instruction('dbhtml')[normalize-space(.) ='stop-chunking'])][1] |ancestor::sect2[$chunk.section.depth > 1 and not(ancestor::*/processing-instruction('dbhtml')[normalize-space(.) ='stop-chunking'])][1] |ancestor::sect3[$chunk.section.depth > 2 and not(ancestor::*/processing-instruction('dbhtml')[normalize-space(.) ='stop-chunking'])][1] |ancestor::sect4[$chunk.section.depth > 3 and not(ancestor::*/processing-instruction('dbhtml')[normalize-space(.) ='stop-chunking'])][1] |ancestor::sect5[$chunk.section.depth > 4 and not(ancestor::*/processing-instruction('dbhtml')[normalize-space(.) ='stop-chunking'])][1] |ancestor::section[$chunk.section.depth > count(ancestor::section) and not(ancestor::*/processing-instruction('dbhtml')[normalize-space(.) ='stop-chunking'])][1])[last()]"/>
+
+ <xsl:variable name="prev" select="(preceding::book[1] |preceding::preface[1] |preceding::chapter[1] |preceding::appendix[1] |preceding::part[1] |preceding::reference[1] |preceding::refentry[1] |preceding::colophon[1] |preceding::article[1] |preceding::topic[1] |preceding::bibliography[parent::article or parent::book or parent::part][1] |preceding::glossary[parent::article or parent::book or parent::part][1] |preceding::index[$generate.index != 0] [parent::article or parent::book or parent::part][1] |preceding::setindex[$generate.index != 0][1] |ancestor::set |ancestor::book[1] |ancestor::preface[1] |ancestor::chapter[1] |ancestor::appendix[1] |ancestor::part[1] |ancestor::reference[1] |ancestor::article[1] |ancestor::topic[1] |$prev-v1 |$prev-v2)[last()]"/>
+
+<!-- speed optimizations for pgsql-docs -->
+ <xsl:variable name="next-v1" select="following::*[self::sect1 or self::sect2 or self::sect3 or self::sect4 or self::sect5][1]"/>
+
+ <xsl:variable name="next-v2" select="(descendant::sect1[$chunk.section.depth > 0 and not(ancestor::*/processing-instruction('dbhtml')[normalize-space(.) ='stop-chunking'])][1] |descendant::sect2[$chunk.section.depth > 1 and not(ancestor::*/processing-instruction('dbhtml')[normalize-space(.) ='stop-chunking'])][1] |descendant::sect3[$chunk.section.depth > 2 and not(ancestor::*/processing-instruction('dbhtml')[normalize-space(.) ='stop-chunking'])][1] |descendant::sect4[$chunk.section.depth > 3 and not(ancestor::*/processing-instruction('dbhtml')[normalize-space(.) ='stop-chunking'])][1] |descendant::sect5[$chunk.section.depth > 4 and not(ancestor::*/processing-instruction('dbhtml')[normalize-space(.) ='stop-chunking'])][1] |descendant::section[$chunk.section.depth > count(ancestor::section) and not(ancestor::*/processing-instruction('dbhtml')[normalize-space(.) ='stop-chunking'])][1])[1]"/>
+
+ <xsl:variable name="next" select="(following::book[1] |following::preface[1] |following::chapter[1] |following::appendix[1] |following::part[1] |following::reference[1] |following::refentry[1] |following::colophon[1] |following::bibliography[parent::article or parent::book or parent::part][1] |following::glossary[parent::article or parent::book or parent::part][1] |following::index[$generate.index != 0] [parent::article or parent::book][1] |following::article[1] |following::topic[1] |following::setindex[$generate.index != 0][1] |descendant::book[1] |descendant::preface[1] |descendant::chapter[1] |descendant::appendix[1] |descendant::article[1] |descendant::topic[1] |descendant::bibliography[parent::article or parent::book][1] |descendant::glossary[parent::article or parent::book or parent::part][1] |descendant::index[$generate.index != 0] [parent::article or parent::book][1] |descendant::colophon[1] |descendant::setindex[$generate.index != 0][1] |descendant::part[1] |descendant::reference[1] |descendant::refentry[1] |$next-v1 |$next-v2)[1]"/>
+
+
+ <xsl:call-template name="process-chunk">
+ <xsl:with-param name="prev" select="$prev"/>
+ <xsl:with-param name="next" select="$next"/>
+ <xsl:with-param name="content" select="$content"/>
+ </xsl:call-template>
+
+</xsl:template>
+
+
+<xsl:template name="make.legalnotice.head.links">
+ <!-- * the following ID is used as part of the legalnotice filename; -->
+ <!-- * we need it in order to construct the filename for use in the -->
+ <!-- * value of the href attribute on the link -->
+
+ <xsl:param name="ln-node" select="(//legalnotice)[1]"/>
+
+ <xsl:param name="linktype">
+ <xsl:choose>
+ <xsl:when test="contains($html.head.legalnotice.link.types, ' ')">
+ <xsl:value-of select="normalize-space( substring-before($html.head.legalnotice.link.types, ' '))"/>
+ </xsl:when>
+ <xsl:otherwise>
+ <xsl:value-of select="$html.head.legalnotice.link.types"/>
+ </xsl:otherwise>
+ </xsl:choose>
+ </xsl:param>
+ <xsl:param name="remaining.linktypes" select="concat( normalize-space( substring-after($html.head.legalnotice.link.types, ' ')),' ')"/>
+ <xsl:if test="not($linktype = '')">
+ <!-- Compute name of legalnotice file (see titlepage.xsl) -->
+ <xsl:variable name="file">
+ <xsl:call-template name="ln.or.rh.filename">
+ <xsl:with-param name="node" select="$ln-node"/>
+ </xsl:call-template>
+ </xsl:variable>
+
+ <link rel="{$linktype}">
+ <xsl:attribute name="href">
+ <xsl:value-of select="$file"/>
+ </xsl:attribute>
+ <xsl:attribute name="title">
+<!-- speed optimizations for pgsql-docs -->
+ <xsl:apply-templates select="/book/bookinfo/legalnotice" mode="object.title.markup.textonly"/>
+ </xsl:attribute>
+ </link>
+<!-- speed optimizations for pgsql-docs -->
+<!-- <xsl:call-template name="make.legalnotice.head.links">
+ < ! - - * pop the next value off the list of link types - - >
+ <xsl:with-param name="linktype" select="substring-before($remaining.linktypes, ' ')"/>
+ < ! - - * remove the link type from the list of remaining link types - - >
+ <xsl:with-param name="remaining.linktypes" select="substring-after($remaining.linktypes, ' ')"/>
+ </xsl:call-template> -->
+ </xsl:if>
+</xsl:template>
+
+<!-- xhtml/html.xsl (needed for the following "reference" template) -->
+<xsl:template name="id.attribute">
+ <xsl:param name="node" select="."/>
+ <xsl:param name="conditional" select="1"/>
+ <xsl:choose>
+ <xsl:when test="$generate.id.attributes = 0">
+ <!-- No id attributes when this param is zero -->
+ </xsl:when>
+ <xsl:when test="$conditional = 0 or $node/@id or $node/@xml:id">
+ <xsl:attribute name="id">
+ <xsl:call-template name="object.id">
+ <xsl:with-param name="object" select="$node"/>
+ </xsl:call-template>
+ </xsl:attribute>
+ </xsl:when>
+ </xsl:choose>
+</xsl:template>
+
+<!-- xhtml/autoidx.xsl -->
+<xsl:template name="reference">
+ <xsl:param name="scope" select="."/>
+ <xsl:param name="role" select="''"/>
+ <xsl:param name="type" select="''"/>
+ <xsl:param name="zones"/>
+
+ <xsl:choose>
+ <xsl:when test="contains($zones, ' ')">
+ <xsl:variable name="zone" select="substring-before($zones, ' ')"/>
+ <xsl:variable name="target" select="key('sections', $zone)"/>
+
+ <a>
+ <xsl:apply-templates select="." mode="class.attribute"/>
+ <xsl:call-template name="id.attribute"/>
+ <xsl:attribute name="href">
+ <xsl:call-template name="href.target">
+ <xsl:with-param name="object" select="$target[1]"/>
+ <xsl:with-param name="context" select="//index[count(ancestor::node()|$scope) = count(ancestor::node()) and ($role = @role or $type = @type or (string-length($role) = 0 and string-length($type) = 0))][1]"/>
+ </xsl:call-template>
+ </xsl:attribute>
+ <xsl:apply-templates select="$target[1]" mode="index-title-content"/>
+ </a>
+ <xsl:text>, </xsl:text>
+ <xsl:call-template name="reference">
+ <xsl:with-param name="zones" select="substring-after($zones, ' ')"/>
+ <xsl:with-param name="position" select="position()"/>
+ <xsl:with-param name="scope" select="$scope"/>
+ <xsl:with-param name="role" select="$role"/>
+ <xsl:with-param name="type" select="$type"/>
+ </xsl:call-template>
+ </xsl:when>
+ <xsl:otherwise>
+ <xsl:variable name="zone" select="$zones"/>
+ <xsl:variable name="target" select="key('sections', $zone)"/>
+
+ <a>
+ <xsl:apply-templates select="." mode="class.attribute"/>
+ <xsl:call-template name="id.attribute"/>
+ <xsl:attribute name="href">
+ <xsl:call-template name="href.target">
+ <xsl:with-param name="object" select="$target[1]"/>
+<!-- speed optimizations for pgsql-docs -->
+ <xsl:with-param name="context" select="/book/index[count(ancestor::node()|$scope) = count(ancestor::node()) and ($role = @role or $type = @type or (string-length($role) = 0 and string-length($type) = 0))][1]"/>
+ </xsl:call-template>
+ </xsl:attribute>
+ <xsl:apply-templates select="$target[1]" mode="index-title-content"/>
+ </a>
+ </xsl:otherwise>
+ </xsl:choose>
+</xsl:template>
+
+</xsl:stylesheet>
diff --git a/doc/src/sgml/stylesheet.xsl b/doc/src/sgml/stylesheet.xsl
index 7967b36..8b01f41 100644
--- a/doc/src/sgml/stylesheet.xsl
+++ b/doc/src/sgml/stylesheet.xsl
@@ -6,6 +6,7 @@
<xsl:import href="http://docbook.sourceforge.net/release/xsl/current/xhtml/chunk.xsl"/>
<xsl:include href="stylesheet-common.xsl" />
+<xsl:include href="stylesheet-xhtml-speedup.xsl" />
<!-- Parameters -->
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