XHProf: Hierarchical Profiler Report

Diff Report: Run #52c1d65bccb31: XHProf Run (Namespace=drupal-perf-joelpittet)
vs.
Run #52c1d5ca86be3: XHProf Run (Namespace=drupal-perf-joelpittet)
Tip: Click a function name below to drill down.

Regression/Improvement summary for substr

substr	Run #52c1d65bccb31	Run #52c1d5ca86be3	Diff	Diff%
Number of Function Calls	1,332	1,328	-4	-0.3%
Incl. Wall Time (microsec)	901	902	1	0.1%
Incl. Wall Time (microsec) per call	1	1	0	0.4%
Excl. Wall Time (microsec)	901	902	1	0.1%
Incl. CPU (microsecs)	1,878	1,860	-18	-1.0%
Incl. CPU (microsecs) per call	1	1	-0	-0.7%
Excl. CPU (microsec)	1,878	1,860	-18	-1.0%
Incl. MemUse (bytes)	81,344	81,184	-160	-0.2%
Incl. MemUse (bytes) per call	61	61	0	0.1%
Excl. MemUse (bytes)	81,344	81,184	-160	-0.2%
Incl. PeakMemUse (bytes)	12,096	11,952	-144	-1.2%
Incl. PeakMemUse (bytes) per call	9	9	-0	-0.9%
Excl. PeakMemUse (bytes)	12,096	11,952	-144	-1.2%

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%	1	0.0%	-18	-0.6%	-160	-0.2%	-144	-0.2%
Exclusive Metrics Diff for Current Function			1	100.0%	-18	-100.0%	-160	-100.0%	-144	-100.0%
*Parent functions*
Symfony\Component\Routing\RouteCompiler::compilePattern	0	0.0%	17	1700.0%	27	150.0%	0	0.0%	0	0.0%
Composer\Autoload\ClassLoader::set	0	0.0%	-17	-1700.0%	-3	-16.7%	0	0.0%	0	0.0%
Drupal\Core\Config\Entity\Query\Query::execute	0	0.0%	8	800.0%	1	5.6%	0	0.0%	0	0.0%
Drupal\Component\Uuid\Php::generate	0	0.0%	-7	-700.0%	-8	-44.4%	0	0.0%	0	0.0%
Twig_Environment::getCacheFilename	-4	-100.0%	-2	-200.0%	13	72.2%	-160	-100.0%	144	100.0%
Symfony\Component\HttpFoundation\ServerBag::getHeaders	0	0.0%	2	200.0%	2	11.1%	-24	-15.0%	-264	-183.3%
Symfony\Component\HttpFoundation\AcceptHeaderItem::fromString	0	0.0%	-1	-100.0%	-3	-16.7%	0	0.0%	0	0.0%
request_path	0	0.0%	1	100.0%	-1	-5.6%	0	0.0%	0	0.0%
theme@1	0	0.0%	0	0.0%	5	27.8%	0	0.0%	0	0.0%
theme@2	0	0.0%	0	0.0%	4	22.2%	0	0.0%	0	0.0%
Drupal\Component\Utility\Xss::split	0	0.0%	0	0.0%	0	0.0%	0	0.0%	0	0.0%
Drupal\Core\Entity\Query\Sql\Tables::addField	0	0.0%	0	0.0%	-1	-5.6%	0	0.0%	0	0.0%
Drupal\Component\Utility\Url::stripDangerousProtocols	0	0.0%	0	0.0%	1	5.6%	40	25.0%	0	0.0%
Symfony\Component\Routing\Generator\UrlGenerator::doGenerate	0	0.0%	0	0.0%	1	5.6%	0	0.0%	0	0.0%
drupal_settings_initialize	0	0.0%	0	0.0%	1	5.6%	0	0.0%	0	0.0%
Drupal\Component\Utility\Crypt::randomBytes	0	0.0%	0	0.0%	6	33.3%	0	0.0%	0	0.0%
Drupal\Core\Authentication\AuthenticationManager::addProvider	0	0.0%	0	0.0%	1	5.6%	0	0.0%	0	0.0%
Composer\Autoload\ClassLoader::findFile	0	0.0%	0	0.0%	-64	-355.6%	-16	-10.0%	-24	-16.7%
Drupal\Core\ParamConverter\EntityConverter::convert	0	0.0%	0	0.0%	-1	-5.6%	0	0.0%	0	0.0%
Drupal\Core\Entity\Query\QueryBase::getNamespaces	0	0.0%	0	0.0%	-1	-5.6%	0	0.0%	0	0.0%
Symfony\Component\HttpFoundation\Request::preparePathInfo	0	0.0%	0	0.0%	2	11.1%	0	0.0%	0	0.0%