XHProf: Hierarchical Profiler Report

Diff Report: Run #52c96b69a1c07: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #52c96bbf45f87: XHProf Run (Namespace=drupal-perf-cottser)
Tip: Click a function name below to drill down.

Regression/Improvement summary for substr

substr	Run #52c96b69a1c07	Run #52c96bbf45f87	Diff	Diff%
Number of Function Calls	176	180	4	2.3%
Incl. Wall Time (microsec)	10	8	-2	-20.0%
Incl. Wall Time (microsec) per call	0	0	-0	-21.8%
Excl. Wall Time (microsec)	10	8	-2	-20.0%
Incl. CPU (microsecs)	183	182	-1	-0.5%
Incl. CPU (microsecs) per call	1	1	-0	-2.8%
Excl. CPU (microsec)	183	182	-1	-0.5%
Incl. MemUse (bytes)	23,280	23,464	184	0.8%
Incl. MemUse (bytes) per call	132	130	-2	-1.4%
Excl. MemUse (bytes)	23,280	23,464	184	0.8%
Incl. PeakMemUse (bytes)	8,088	8,000	-88	-1.1%
Incl. PeakMemUse (bytes) per call	46	44	-2	-3.3%
Excl. PeakMemUse (bytes)	8,088	8,000	-88	-1.1%

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%	-2	-0.4%	-1	-0.2%	184	0.4%	-88	-0.2%
Exclusive Metrics Diff for Current Function			-2	-100.0%	-1	-100.0%	184	100.0%	-88	-100.0%
*Parent functions*
Twig_Environment::getCacheFilename	4	100.0%	0	0.0%	-3	-300.0%	168	91.3%	-88	-100.0%
Drupal\Component\Utility\Crypt::randomBytes	0	0.0%	-1	-50.0%	0	0.0%	16	8.7%	0	0.0%
Drupal\Core\Config\Entity\Query\Query::execute	0	0.0%	1	50.0%	2	200.0%	0	0.0%	0	0.0%
Drupal\Core\Entity\Query\QueryBase::getNamespaces	0	0.0%	0	0.0%	-3	-300.0%	0	0.0%	0	0.0%
theme@1	0	0.0%	0	0.0%	3	300.0%	0	0.0%	0	0.0%
Drupal\Core\Database\Connection::query	0	0.0%	0	0.0%	-2	-200.0%	0	0.0%	0	0.0%
Drupal\Component\Utility\Url::stripDangerousProtocols	0	0.0%	0	0.0%	-1	-100.0%	0	0.0%	0	0.0%
theme@2	0	0.0%	0	0.0%	5	500.0%	0	0.0%	0	0.0%
Symfony\Component\HttpFoundation\AcceptHeaderItem::fromString	0	0.0%	0	0.0%	-2	-200.0%	0	0.0%	0	0.0%
Symfony\Component\Routing\RouteCompiler::compilePattern	0	0.0%	0	0.0%	5	500.0%	0	0.0%	0	0.0%
drupal_settings_initialize	0	0.0%	0	0.0%	-3	-300.0%	0	0.0%	0	0.0%
request_path	0	0.0%	0	0.0%	0	0.0%	0	0.0%	0	0.0%
Drupal\Component\Uuid\Php::generate	0	0.0%	0	0.0%	-1	-100.0%	0	0.0%	0	0.0%
Symfony\Component\HttpFoundation\ServerBag::getHeaders	0	0.0%	0	0.0%	-3	-300.0%	0	0.0%	0	0.0%
Drupal\Core\Authentication\AuthenticationManager::addProvider	0	0.0%	-1	-50.0%	0	0.0%	0	0.0%	0	0.0%
Symfony\Component\HttpFoundation\Request::preparePathInfo	0	0.0%	-1	-50.0%	0	0.0%	0	0.0%	0	0.0%
Composer\Autoload\ClassLoader::set	0	0.0%	0	0.0%	2	200.0%	0	0.0%	0	0.0%