XHProf: Hierarchical Profiler Report

Diff Report: Run #51ec5d631cb28: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec5ca916d7d: XHProf Run (Namespace=drupal-perf-drupalcon)
Tip: Click a function name below to drill down.

drupal_clean_css_identifier	Run #51ec5d631cb28	Run #51ec5ca916d7d	Diff	Diff%
Number of Function Calls	73	73	0	0.0%
Incl. Wall Time (microsec)	1,608	1,432	-176	-10.9%
Incl. Wall Time (microsec) per call	22	20	-2	-10.9%
Excl. Wall Time (microsec)	488	470	-18	-3.7%
Incl. CPU (microsecs)	1,676	1,496	-180	-10.7%
Incl. CPU (microsecs) per call	23	20	-2	-10.7%
Excl. CPU (microsec)	457	402	-55	-12.0%
Incl. MemUse (bytes)	13,576	13,576	0	0.0%
Incl. MemUse (bytes) per call	186	186	0	0.0%
Excl. MemUse (bytes)	-3,608	-3,600	8	0.2%
Incl. PeakMemUse (bytes)	595,664	435,008	-160,656	-27.0%
Incl. PeakMemUse (bytes) per call	8,160	5,959	-2,201	-27.0%
Excl. PeakMemUse (bytes)	1,808	1,280	-528	-29.2%

Function Name	Calls Diff	Calls Diff%	Incl. Wall Diff (microsec)	IWall Diff%	Incl. CPU Diff (microsec)	ICpu Diff%	Incl. MemUse Diff (bytes)	IMemUse Diff%	Incl. PeakMemUse Diff (bytes)	IPeakMemUse Diff%
*Current Function*
drupal_clean_css_identifier	0	N/A%	-176	-2.2%	-180	-2.0%	0	0.0%	-160,656	-243.3%
Exclusive Metrics Diff for Current Function			-18	-10.2%	-55	-30.6%	8	N/A%	-528	-0.3%
*Parent functions*
drupal_html_class	0	N/A%	-175	-99.4%	-180	-100.0%	0	N/A%	-160,656	-100.0%
template_preprocess_views_view_fields	0	N/A%	-2	-1.1%	-1	-0.6%	0	N/A%	0	0.0%
Drupal\views\Plugin\views\field\FieldPluginBase::elementWrapperClasses	0	N/A%	1	0.6%	1	0.6%	0	N/A%	0	0.0%
Drupal\views\Plugin\views\style\StylePluginBase::getRowClass	0	N/A%	0	0.0%	0	0.0%	0	N/A%	0	0.0%
template_preprocess_views_view	0	N/A%	0	0.0%	0	0.0%	0	N/A%	0	0.0%
Drupal\views\Plugin\views\field\FieldPluginBase::elementClasses	0	N/A%	0	0.0%	0	0.0%	0	N/A%	0	0.0%
*Child functions*
strtr	0	N/A%	-150	-85.2%	-135	-75.0%	-8	N/A%	-160,128	-99.7%
preg_replace	0	N/A%	-8	-4.5%	10	5.6%	0	N/A%	0	0.0%