XHProf: Hierarchical Profiler Report

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

Regression/Improvement summary for substr

substr	Run #526a239923027	Run #526a240c73a50	Diff	Diff%
Number of Function Calls	1,019	1,032	13	1.3%
Incl. Wall Time (microsec)	642	729	87	13.6%
Incl. Wall Time (microsec) per call	1	1	0	12.1%
Excl. Wall Time (microsec)	642	729	87	13.6%
Incl. CPU (microsecs)	1,348	1,437	89	6.6%
Incl. CPU (microsecs) per call	1	1	0	5.3%
Excl. CPU (microsec)	1,348	1,437	89	6.6%
Incl. MemUse (bytes)	64,944	64,768	-176	-0.3%
Incl. MemUse (bytes) per call	64	63	-1	-1.5%
Excl. MemUse (bytes)	64,944	64,768	-176	-0.3%
Incl. PeakMemUse (bytes)	23,072	21,248	-1,824	-7.9%
Incl. PeakMemUse (bytes) per call	23	21	-2	-9.1%
Excl. PeakMemUse (bytes)	23,072	21,248	-1,824	-7.9%

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%
Drupal\Core\Routing\UrlGenerator::generateFromPath	-2	-15.4%	-2	-2.3%	-3	-3.4%	-864	-490.9%	-712	-39.0%
Symfony\Component\HttpFoundation\ServerBag::getHeaders	0	0.0%	2	2.3%	3	3.4%	0	0.0%	0	0.0%
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%
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%
theme@3	0	0.0%	-1	-1.1%	-2	-2.2%	0	0.0%	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%
theme@2	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\Authentication\AuthenticationManager::addProvider	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%
request_path	0	0.0%	0	0.0%	-1	-1.1%	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%
Twig_Environment::getCacheFilename	20	153.8%	0	0.0%	12	13.5%	840	477.3%	0	0.0%
Drupal\Core\Entity\Query\QueryBase::getNamespaces	0	0.0%	0	0.0%	0	0.0%	0	0.0%	0	0.0%