XHProf: Hierarchical Profiler Report

Diff Report: Run #51ec243650361: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec227a9cea0: XHProf Run (Namespace=drupal-perf-drupalcon)
Tip: Click a function name below to drill down.

Regression/Improvement summary for class_exists

class_exists	Run #51ec243650361	Run #51ec227a9cea0	Diff	Diff%
Number of Function Calls	633	632	-1	-0.2%
Incl. Wall Time (microsec)	22,634	22,502	-132	-0.6%
Incl. Wall Time (microsec) per call	36	36	-0	-0.4%
Excl. Wall Time (microsec)	1,408	1,389	-19	-1.3%
Incl. CPU (microsecs)	23,205	23,006	-199	-0.9%
Incl. CPU (microsecs) per call	37	36	-0	-0.7%
Excl. CPU (microsec)	1,798	1,720	-78	-4.3%
Incl. MemUse (bytes)	2,134,240	2,130,160	-4,080	-0.2%
Incl. MemUse (bytes) per call	3,372	3,371	-1	-0.0%
Excl. MemUse (bytes)	-16,104	-16,104	0	0.0%
Incl. PeakMemUse (bytes)	1,485,584	1,486,448	864	0.1%
Incl. PeakMemUse (bytes) per call	2,347	2,352	5	0.2%
Excl. PeakMemUse (bytes)	8,648	8,592	-56	-0.6%

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%	-132	-1.5%	-199	-3.0%	-4,080	-13.6%	864	2.7%
Exclusive Metrics Diff for Current Function			-19	-14.4%	-78	-39.2%	0	0.0%	-56	-6.5%
*Parent functions*
Drupal\Component\Plugin\Factory\DefaultFactory::getPluginClass	0	0.0%	-97	-73.5%	-97	-48.7%	-4,048	-99.2%	-4,400	-509.3%
Drupal\Core\Database\Connection::getDriverClass	0	0.0%	-35	-26.5%	-36	-18.1%	48	1.2%	5,168	598.1%
Drupal\Core\Config\Context\ConfigContextFactory::get	0	0.0%	-7	-5.3%	-9	-4.5%	0	0.0%	0	0.0%
Drupal\Core\Controller\ControllerResolver::createController	0	0.0%	5	3.8%	2	1.0%	0	0.0%	0	0.0%
Drupal\Core\Template\TwigEnvironment::loadTemplate	-1	-100.0%	-1	-0.8%	-3	-1.5%	0	0.0%	-88	-10.2%
file_stream_wrapper_valid_scheme	0	0.0%	1	0.8%	-17	-8.5%	0	0.0%	0	0.0%
Drupal\Core\Entity\EntityManager::getControllerClass	0	0.0%	1	0.8%	-2	-1.0%	-80	-2.0%	128	14.8%
Doctrine\Common\Annotations\DocParser::classExists	0	0.0%	1	0.8%	-35	-17.6%	0	0.0%	0	0.0%
file_stream_wrapper_get_instance_by_uri	0	0.0%	0	0.0%	-8	-4.0%	0	0.0%	0	0.0%
file_stream_wrapper_get_instance_by_scheme	0	0.0%	0	0.0%	0	0.0%	0	0.0%	0	0.0%
_drupal_simpletest_conf_path	0	0.0%	0	0.0%	1	0.5%	0	0.0%	0	0.0%
Drupal\Component\Datetime\DateTimePlus::canUseIntl	0	0.0%	0	0.0%	5	2.5%	0	0.0%	56	6.5%
Drupal\Core\DrupalKernel::initializeContainer	0	0.0%	0	0.0%	0	0.0%	0	0.0%	0	0.0%
*Child functions*
Symfony\Component\ClassLoader\ApcClassLoader::loadClass	0	N/A%	-114	-86.4%	-120	-60.3%	-4,080	-100.0%	864	100.0%
Symfony\Component\ClassLoader\ClassLoader::loadClass	0	N/A%	1	0.8%	-1	-0.5%	0	0.0%	56	6.5%