==prof:track==
{{Mark|Introduced with Version 9.0:}}
{| width='100%'
|-
| width='120' | '''Signatures'''
|{{Func|prof:track|$expr expression as item()|item()*}}<br/>{{Func|prof:track|$expr expression as item(), $options as map(*)?|item()*}}
|-
| '''Summary'''
==prof:time==
{{Mark|Updated with Version 9.0:}} {{Code|$cache}} argument removed.
{| width='100%'
==prof:memory==
{{Mark|Updated with Version 9.0:}} Renamed (old name: <code>prof:mem</code>); {{Code|$cache}} argument removed.
{| width='100%'