XHProf: Hierarchical Profiler Report

Diff Report: Run #51ec227a9cea0: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec243650361: XHProf Run (Namespace=drupal-perf-drupalcon)
Tip: Click a function name below to drill down.

Regression/Improvement summary for substr

substr	Run #51ec227a9cea0	Run #51ec243650361	Diff	Diff%
Number of Function Calls	10,893	10,897	4	0.0%
Incl. Wall Time (microsec)	3,444	3,384	-60	-1.7%
Incl. Wall Time (microsec) per call	0	0	-0	-1.8%
Excl. Wall Time (microsec)	3,444	3,384	-60	-1.7%
Incl. CPU (microsecs)	13,674	13,831	157	1.1%
Incl. CPU (microsecs) per call	1	1	0	1.1%
Excl. CPU (microsec)	13,674	13,831	157	1.1%
Incl. MemUse (bytes)	677,336	677,232	-104	-0.0%
Incl. MemUse (bytes) per call	62	62	-0	-0.1%
Excl. MemUse (bytes)	677,336	677,232	-104	-0.0%
Incl. PeakMemUse (bytes)	10,872	10,816	-56	-0.5%
Incl. PeakMemUse (bytes) per call	1	1	-0	-0.6%
Excl. PeakMemUse (bytes)	10,872	10,816	-56	-0.5%

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%	-60	-0.7%	157	2.4%	-104	-0.3%	-56	-0.2%
Exclusive Metrics Diff for Current Function			-60	-100.0%	157	100.0%	-104	-100.0%	-56	-100.0%
*Parent functions*
Twig_Environment::getCacheFilename	4	100.0%	3	5.0%	9	5.7%	168	161.5%	88	157.1%
Doctrine\Common\Annotations\DocLexer::getType	0	0.0%	-94	-156.7%	132	84.1%	-128	-123.1%	0	0.0%
Doctrine\Common\Annotations\DocParser::parse	0	0.0%	15	25.0%	74	47.1%	-24	-23.1%	0	0.0%
Doctrine\Common\Reflection\StaticReflectionParser::parse	0	0.0%	0	0.0%	0	0.0%	0	0.0%	0	0.0%
Doctrine\Common\Annotations\DocParser::parse@1	0	0.0%	0	0.0%	3	1.9%	0	0.0%	0	0.0%
Doctrine\Common\Reflection\StaticReflectionParser::__construct	0	0.0%	9	15.0%	-62	-39.5%	-136	-130.8%	0	0.0%
Drupal\system\Plugin\Block\SystemMenuBlock::build	0	0.0%	0	0.0%	2	1.3%	0	0.0%	0	0.0%
theme@2	0	0.0%	-1	-1.7%	-1	-0.6%	0	0.0%	0	0.0%
Drupal\image\Plugin\Core\Entity\ImageStyle::getPathToken	0	0.0%	-1	-1.7%	-3	-1.9%	0	0.0%	0	0.0%
file_uri_scheme	0	0.0%	-1	-1.7%	-3	-1.9%	0	0.0%	0	0.0%
theme@1	0	0.0%	0	0.0%	1	0.6%	0	0.0%	0	0.0%
Drupal\Component\Utility\Url::stripDangerousProtocols	0	0.0%	0	0.0%	0	0.0%	0	0.0%	0	0.0%
Drupal\Core\Routing\UrlGenerator::generateFromPath	0	0.0%	0	0.0%	3	1.9%	16	15.4%	-144	-257.1%
Symfony\Component\HttpFoundation\ServerBag::getHeaders	0	0.0%	4	6.7%	3	1.9%	0	0.0%	0	0.0%
Drupal\Component\Uuid\Php::generate	0	0.0%	-4	-6.7%	-2	-1.3%	0	0.0%	0	0.0%
Drupal\Component\Utility\Crypt::randomBytes	0	0.0%	0	0.0%	0	0.0%	0	0.0%	0	0.0%
drupal_settings_initialize	0	0.0%	0	0.0%	-1	-0.6%	0	0.0%	0	0.0%
Symfony\Component\HttpFoundation\Request::preparePathInfo	0	0.0%	0	0.0%	3	1.9%	0	0.0%	0	0.0%
Drupal\Core\Authentication\AuthenticationManager::addProvider	0	0.0%	0	0.0%	1	0.6%	0	0.0%	0	0.0%
Drupal\views\Plugin\views\query\Sql::addField	0	0.0%	0	0.0%	-1	-0.6%	0	0.0%	0	0.0%
Symfony\Component\HttpFoundation\AcceptHeaderItem::fromString	0	0.0%	10	16.7%	0	0.0%	0	0.0%	0	0.0%
Symfony\Component\Routing\RouteCompiler::compilePattern	0	0.0%	0	0.0%	0	0.0%	0	0.0%	0	0.0%
request_path	0	0.0%	0	0.0%	-1	-0.6%	0	0.0%	0	0.0%