XHProf: Hierarchical Profiler Report

Diff Report: Run #526a240c73a50: XHProf Run (Namespace=drupal-perf-joelpittet)
vs.
Run #526a239923027: XHProf Run (Namespace=drupal-perf-joelpittet)
Tip: Click a function name below to drill down.

Regression/Improvement summary for substr

substr	Run #526a240c73a50	Run #526a239923027	Diff	Diff%
Number of Function Calls	1,032	1,019	-13	-1.3%
Incl. Wall Time (microsec)	729	642	-87	-11.9%
Incl. Wall Time (microsec) per call	1	1	-0	-10.8%
Excl. Wall Time (microsec)	729	642	-87	-11.9%
Incl. CPU (microsecs)	1,437	1,348	-89	-6.2%
Incl. CPU (microsecs) per call	1	1	-0	-5.0%
Excl. CPU (microsec)	1,437	1,348	-89	-6.2%
Incl. MemUse (bytes)	64,768	64,944	176	0.3%
Incl. MemUse (bytes) per call	63	64	1	1.6%
Excl. MemUse (bytes)	64,768	64,944	176	0.3%
Incl. PeakMemUse (bytes)	21,248	23,072	1,824	8.6%
Incl. PeakMemUse (bytes) per call	21	23	2	10.0%
Excl. PeakMemUse (bytes)	21,248	23,072	1,824	8.6%

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	-13	-100.0%	-87	-255.9%	-89	-53.9%	176	0.1%	1,824	0.9%
Exclusive Metrics Diff for Current Function			-87	-100.0%	-89	-100.0%	176	100.0%	1,824	100.0%
*Parent functions*
Composer\Autoload\ClassLoader::findFile	0	0.0%	-43	-49.4%	-32	-36.0%	0	0.0%	0	0.0%
Composer\Autoload\ClassLoader::set	0	0.0%	-36	-41.4%	-32	-36.0%	0	0.0%	0	0.0%
Symfony\Component\Routing\RouteCompiler::compilePattern	0	0.0%	-14	-16.1%	-11	-12.4%	0	0.0%	0	0.0%
Symfony\Component\HttpFoundation\AcceptHeaderItem::fromString	0	0.0%	4	4.6%	-5	-5.6%	0	0.0%	0	0.0%
drupal_settings_initialize	0	0.0%	-4	-4.6%	-4	-4.5%	0	0.0%	0	0.0%
Symfony\Component\HttpFoundation\ServerBag::getHeaders	0	0.0%	-2	-2.3%	-3	-3.4%	0	0.0%	0	0.0%
Drupal\Core\Routing\UrlGenerator::generateFromPath	2	15.4%	2	2.3%	3	3.4%	864	490.9%	712	39.0%
Drupal\Component\Uuid\Php::generate	0	0.0%	2	2.3%	-2	-2.2%	0	0.0%	0	0.0%
theme@1	0	0.0%	1	1.1%	2	2.2%	0	0.0%	0	0.0%
theme@3	0	0.0%	1	1.1%	2	2.2%	0	0.0%	0	0.0%
Drupal\Component\Utility\Crypt::randomBytes	0	0.0%	1	1.1%	1	1.1%	-8	-4.5%	0	0.0%
Drupal\Component\Utility\Url::stripDangerousProtocols	2	15.4%	1	1.1%	3	3.4%	64	36.4%	800	43.9%
request_path	0	0.0%	0	0.0%	1	1.1%	0	0.0%	0	0.0%
theme@2	0	0.0%	0	0.0%	4	4.5%	0	0.0%	0	0.0%
Drupal\Core\Authentication\AuthenticationManager::addProvider	0	0.0%	0	0.0%	-1	-1.1%	0	0.0%	0	0.0%
Twig_Environment::getCacheFilename	-20	-153.8%	0	0.0%	-12	-13.5%	-840	-477.3%	0	0.0%
Drupal\Core\Entity\Query\Sql\Tables::addField	0	0.0%	0	0.0%	-1	-1.1%	0	0.0%	0	0.0%
Symfony\Component\HttpFoundation\Request::preparePathInfo	0	0.0%	0	0.0%	-4	-4.5%	0	0.0%	0	0.0%
file_uri_scheme	3	23.1%	0	0.0%	3	3.4%	96	54.5%	312	17.1%
Drupal\Core\Entity\Query\QueryBase::getNamespaces	0	0.0%	0	0.0%	0	0.0%	0	0.0%	0	0.0%
Drupal\Core\ParamConverter\EntityConverter::convert	0	0.0%	0	0.0%	-1	-1.1%	0	0.0%	0	0.0%