xsltproc

Profiler

The xsltproc XSLT 1.0 processor supports a --profile switch that triggers a dump of profiling information. The example below shows the first few lines of output from profiling one of the code-generating stylesheets for the xmlroff XSL formatter:

xsltproc --profile --stringparam dump-info dump-info.xml fo-context-dump.xsl xslspec.xml
number               match                name      mode  Calls Tot 100us Avg

    0                     property-to-context-property-merge
                                                            172 426224   2478
    1                        fo-context-c-file                1 315848 315848
    2                     property-to-slist-foreach-if
                                                            172 143712    835
    3                     property-to-context-property-copy
                                                            172 107006    622
...

Debugger

xsltproc has a command-line debugger.