XHProf: Hierarchical Profiler Report

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

Regression/Improvement summary for substr

substr	Run #51ec5ca916d7d	Run #51ec5d631cb28	Diff	Diff%
Number of Function Calls	1,773	1,777	4	0.2%
Incl. Wall Time (microsec)	667	646	-21	-3.1%
Incl. Wall Time (microsec) per call	0	0	-0	-3.4%
Excl. Wall Time (microsec)	667	646	-21	-3.1%
Incl. CPU (microsecs)	2,218	2,229	11	0.5%
Incl. CPU (microsecs) per call	1	1	0	0.3%
Excl. CPU (microsec)	2,218	2,229	11	0.5%
Incl. MemUse (bytes)	122,640	122,712	72	0.1%
Incl. MemUse (bytes) per call	69	69	-0	-0.2%
Excl. MemUse (bytes)	122,640	122,712	72	0.1%
Incl. PeakMemUse (bytes)	10,760	10,760	0	0.0%
Incl. PeakMemUse (bytes) per call	6	6	-0	-0.2%
Excl. PeakMemUse (bytes)	10,760	10,760	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%	-21	-0.3%	11	0.1%	72	0.1%	0	0.0%
Exclusive Metrics Diff for Current Function			-21	-100.0%	11	100.0%	72	100.0%	0	N/A%
*Parent functions*
Doctrine\Common\Reflection\StaticReflectionParser::__construct	0	0.0%	-24	-114.3%	-1	-9.1%	-48	-66.7%	0	N/A%
Doctrine\Common\Annotations\DocLexer::getType	0	0.0%	15	71.4%	6	54.5%	-24	-33.3%	0	N/A%
Symfony\Component\HttpFoundation\AcceptHeaderItem::fromString	0	0.0%	-12	-57.1%	0	0.0%	0	0.0%	0	N/A%
Symfony\Component\HttpFoundation\ServerBag::getHeaders	0	0.0%	8	38.1%	6	54.5%	0	0.0%	0	N/A%
Drupal\Core\Routing\UrlGenerator::generateFromPath	0	0.0%	-7	-33.3%	-13	-118.2%	0	0.0%	0	N/A%
Drupal\Component\Utility\Url::stripDangerousProtocols	0	0.0%	-3	-14.3%	3	27.3%	0	0.0%	0	N/A%
theme@2	0	0.0%	-3	-14.3%	-2	-18.2%	0	0.0%	0	N/A%
Twig_Environment::getCacheFilename	4	100.0%	3	14.3%	-10	-90.9%	144	200.0%	0	N/A%
Drupal\Component\Uuid\Php::generate	0	0.0%	2	9.5%	1	9.1%	0	0.0%	0	N/A%
Doctrine\Common\Annotations\DocParser::parse@1	0	0.0%	0	0.0%	2	18.2%	0	0.0%	0	N/A%
Drupal\system\Plugin\Block\SystemMenuBlock::build	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%
theme@4	0	0.0%	0	0.0%	-2	-18.2%	0	0.0%	0	N/A%
drupal_settings_initialize	0	0.0%	0	0.0%	0	0.0%	0	0.0%	0	N/A%
Doctrine\Common\Reflection\StaticReflectionParser::parse	0	0.0%	0	0.0%	1	9.1%	0	0.0%	0	N/A%
Symfony\Component\Routing\RouteCompiler::compilePattern	0	0.0%	0	0.0%	1	9.1%	0	0.0%	0	N/A%
Drupal\Core\Authentication\AuthenticationManager::addProvider	0	0.0%	0	0.0%	2	18.2%	0	0.0%	0	N/A%
Drupal\views\Plugin\views\query\Sql::addField	0	0.0%	0	0.0%	-1	-9.1%	0	0.0%	0	N/A%
request_path	0	0.0%	0	0.0%	0	0.0%	0	0.0%	0	N/A%
Symfony\Component\HttpFoundation\Request::preparePathInfo	0	0.0%	0	0.0%	-3	-27.3%	0	0.0%	0	N/A%
Drupal\Component\Utility\Crypt::randomBytes	0	0.0%	0	0.0%	-2	-18.2%	0	0.0%	0	N/A%
Doctrine\Common\Annotations\DocParser::parse	0	0.0%	0	0.0%	23	209.1%	0	0.0%	0	N/A%