XHProf: Hierarchical Profiler Report

Diff Report: Run #531ee5f3237b0: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #531ee657ba49e: XHProf Run (Namespace=drupal-perf-cottser)
Tip: Click a function name below to drill down.

Regression/Improvement summary for class_exists

class_exists	Run #531ee5f3237b0	Run #531ee657ba49e	Diff	Diff%
Number of Function Calls	249	250	1	0.4%
Incl. Wall Time (microsec)	20,345	19,972	-373	-1.8%
Incl. Wall Time (microsec) per call	82	80	-2	-2.2%
Excl. Wall Time (microsec)	393	398	5	1.3%
Incl. CPU (microsecs)	20,488	20,120	-368	-1.8%
Incl. CPU (microsecs) per call	82	80	-2	-2.2%
Excl. CPU (microsec)	505	513	8	1.6%
Incl. MemUse (bytes)	4,141,912	4,139,560	-2,352	-0.1%
Incl. MemUse (bytes) per call	16,634	16,558	-76	-0.5%
Excl. MemUse (bytes)	-1,192	-1,176	16	1.3%
Incl. PeakMemUse (bytes)	3,894,896	3,895,624	728	0.0%
Incl. PeakMemUse (bytes) per call	15,642	15,582	-60	-0.4%
Excl. PeakMemUse (bytes)	8,776	8,984	208	2.4%

Parent/Child Regression/Improvement report for class_exists [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*
class_exists	1	100.0%	-373	-14.8%	-368	-12.2%	-2,352	-3.1%	728	0.9%
Exclusive Metrics Diff for Current Function			5	1.3%	8	2.2%	16	0.7%	208	28.6%
*Parent functions*
Drupal\Core\Entity\EntityManager::getDefinition	0	0.0%	-146	-39.1%	-142	-38.6%	-536	-22.8%	-1,128	-154.9%
Drupal\Core\Entity\EntityType::hasControllerClass	0	0.0%	-127	-34.0%	-127	-34.5%	-352	-15.0%	24	3.3%
Drupal\Component\Plugin\Factory\DefaultFactory::getPluginClass	0	0.0%	-85	-22.8%	-85	-23.1%	-24	-1.0%	368	50.5%
Drupal\Core\Database\Connection::getDriverClass	0	0.0%	-37	-9.9%	-37	-10.1%	96	4.1%	-16	-2.2%
Drupal\Core\Entity\Query\QueryBase::getClass	0	0.0%	23	6.2%	23	6.2%	88	3.7%	3,448	473.6%
Drupal\Core\Controller\ControllerResolver::createController	0	0.0%	-9	-2.4%	-9	-2.4%	0	0.0%	56	7.7%
Drupal\Core\Form\FormBuilder::getFormId	0	0.0%	7	1.9%	9	2.4%	-1,600	-68.0%	-2,016	-276.9%
Drupal\Core\ImageToolkit\ImageToolkitManager::getDefaultToolkitId	-1	-100.0%	-1	-0.3%	-3	-0.8%	-824	-35.0%	-728	-100.0%
Drupal\Core\Template\TwigEnvironment::loadTemplate	1	100.0%	1	0.3%	-2	-0.5%	0	0.0%	0	0.0%
Drupal\Core\ImageToolkit\ImageToolkitManager::getDefaultToolkit	1	100.0%	1	0.3%	4	1.1%	816	34.7%	720	98.9%
Drupal\Component\Datetime\DateTimePlus::intlDateFormatterExists	0	0.0%	0	0.0%	4	1.1%	-16	-0.7%	0	0.0%
file_stream_wrapper_get_instance_by_uri	0	0.0%	0	0.0%	1	0.3%	0	0.0%	0	0.0%
file_stream_wrapper_get_instance_by_scheme	0	0.0%	0	0.0%	2	0.5%	0	0.0%	0	0.0%
Drupal\Core\DrupalKernel::initializeContainer	0	0.0%	0	0.0%	-3	-0.8%	0	0.0%	0	0.0%
file_stream_wrapper_valid_scheme	0	0.0%	0	0.0%	-3	-0.8%	0	0.0%	0	0.0%
*Child function*
Symfony\Component\ClassLoader\ApcClassLoader::loadClass	0	N/A%	-378	-101.3%	-376	-102.2%	-2,368	-100.7%	520	71.4%