XHProf: Hierarchical Profiler Report

Diff Report: Run #51abc4cb0a647: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #51abc588c7973: XHProf Run (Namespace=drupal-perf-cottser)
Tip: Click a function name below to drill down.

Regression/Improvement summary for substr

substr	Run #51abc4cb0a647	Run #51abc588c7973	Diff	Diff%
Number of Function Calls	183	187	4	2.2%
Incl. Wall Time (microsec)	66	73	7	10.6%
Incl. Wall Time (microsec) per call	0	0	0	8.2%
Excl. Wall Time (microsec)	66	73	7	10.6%
Incl. CPU (microsecs)	247	267	20	8.1%
Incl. CPU (microsecs) per call	1	1	0	5.8%
Excl. CPU (microsec)	247	267	20	8.1%
Incl. MemUse (bytes)	53,416	53,592	176	0.3%
Incl. MemUse (bytes) per call	292	287	-5	-1.8%
Excl. MemUse (bytes)	53,416	53,592	176	0.3%
Incl. PeakMemUse (bytes)	19,992	19,992	0	0.0%
Incl. PeakMemUse (bytes) per call	109	107	-2	-2.1%
Excl. PeakMemUse (bytes)	19,992	19,992	0	0.0%

Parent/Child Regression/Improvement report for substr [View Callgraph Diff]

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*
substr	4	100.0%	7	12.7%	20	1.2%	176	0.6%	0	0.0%
Exclusive Metrics Diff for Current Function			7	100.0%	20	100.0%	176	100.0%	0	N/A%
*Parent functions*
Symfony\Component\HttpFoundation\AcceptHeaderItem::fromString	0	0.0%	4	57.1%	9	45.0%	-8	-4.5%	0	N/A%
Drupal\Component\Utility\Crypt::randomBytes	0	0.0%	4	57.1%	4	20.0%	0	0.0%	0	N/A%
theme@2	0	0.0%	-4	-57.1%	-1	-5.0%	0	0.0%	0	N/A%
Drupal\Component\Uuid\Php::generate	0	0.0%	3	42.9%	3	15.0%	16	9.1%	0	N/A%
Twig_Environment::getCacheFilename	4	100.0%	2	28.6%	5	25.0%	168	95.5%	0	N/A%
Symfony\Component\Routing\RouteCompiler::compilePattern	0	0.0%	-1	-14.3%	-2	-10.0%	0	0.0%	0	N/A%
Symfony\Component\HttpFoundation\Request::preparePathInfo	0	0.0%	-1	-14.3%	3	15.0%	0	0.0%	0	N/A%
Drupal\Component\Utility\Xss::split	0	0.0%	0	0.0%	0	0.0%	0	0.0%	0	N/A%
theme@1	0	0.0%	0	0.0%	0	0.0%	0	0.0%	0	N/A%
drupal_settings_initialize	0	0.0%	0	0.0%	-1	-5.0%	0	0.0%	0	N/A%
_drupal_session_read	0	0.0%	0	0.0%	-1	-5.0%	0	0.0%	0	N/A%
Drupal\Component\Utility\UrlValidator::stripDangerousProtocols	0	0.0%	0	0.0%	0	0.0%	0	0.0%	0	N/A%
Symfony\Component\HttpFoundation\ServerBag::getHeaders	0	0.0%	0	0.0%	1	5.0%	0	0.0%	0	N/A%
Drupal\field_sql_storage\Entity\Tables::addField	0	0.0%	0	0.0%	1	5.0%	0	0.0%	0	N/A%
edit_custom_theme	0	0.0%	0	0.0%	1	5.0%	0	0.0%	0	N/A%
editor_custom_theme	0	0.0%	0	0.0%	0	0.0%	0	0.0%	0	N/A%
request_path	0	0.0%	0	0.0%	-1	-5.0%	0	0.0%	0	N/A%
Drupal\system\Plugin\Block\SystemMenuBlock::blockBuild	0	0.0%	0	0.0%	-1	-5.0%	0	0.0%	0	N/A%
contextual_custom_theme	0	0.0%	0	0.0%	0	0.0%	0	0.0%	0	N/A%