XHProf: Hierarchical Profiler Report

Diff Report: Run #51ec66a5a877d: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec623000e0c: XHProf Run (Namespace=drupal-perf-drupalcon)
Tip: Click a function name below to drill down.

Regression/Improvement summary for class_exists

class_exists	Run #51ec66a5a877d	Run #51ec623000e0c	Diff	Diff%
Number of Function Calls	773	772	-1	-0.1%
Incl. Wall Time (microsec)	23,257	23,009	-248	-1.1%
Incl. Wall Time (microsec) per call	30	30	-0	-0.9%
Excl. Wall Time (microsec)	1,574	1,575	1	0.1%
Incl. CPU (microsecs)	23,924	23,673	-251	-1.0%
Incl. CPU (microsecs) per call	31	31	-0	-0.9%
Excl. CPU (microsec)	2,039	2,056	17	0.8%
Incl. MemUse (bytes)	2,195,640	2,195,992	352	0.0%
Incl. MemUse (bytes) per call	2,840	2,845	4	0.1%
Excl. MemUse (bytes)	-16,872	-16,872	0	0.0%
Incl. PeakMemUse (bytes)	1,515,952	1,522,152	6,200	0.4%
Incl. PeakMemUse (bytes) per call	1,961	1,972	11	0.5%
Excl. PeakMemUse (bytes)	9,128	8,472	-656	-7.2%

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%	-248	-10.6%	-251	-7.3%	352	0.4%	6,200	8.5%
Exclusive Metrics Diff for Current Function			1	0.4%	17	6.8%	0	0.0%	-656	-10.6%
*Parent functions*
Drupal\Component\Datetime\DateTimePlus::canUseIntl	0	0.0%	-270	-108.9%	-280	-111.6%	0	0.0%	0	0.0%
Drupal\Component\Plugin\Factory\DefaultFactory::getPluginClass	0	0.0%	-82	-33.1%	-63	-25.1%	264	75.0%	200	3.2%
Drupal\Core\Database\Connection::getDriverClass	0	0.0%	68	27.4%	68	27.1%	32	9.1%	6,584	106.2%
Drupal\Core\Entity\EntityManager::getControllerClass	0	0.0%	20	8.1%	18	7.2%	56	15.9%	-584	-9.4%
Doctrine\Common\Annotations\DocParser::classExists	0	0.0%	11	4.4%	3	1.2%	0	0.0%	0	0.0%
file_stream_wrapper_valid_scheme	0	0.0%	7	2.8%	11	4.4%	0	0.0%	0	0.0%
Drupal\Core\Template\TwigEnvironment::loadTemplate	-1	-100.0%	-1	-0.4%	2	0.8%	0	0.0%	0	0.0%
file_stream_wrapper_get_instance_by_uri	0	0.0%	-1	-0.4%	-6	-2.4%	0	0.0%	0	0.0%
Drupal\Core\Controller\ControllerResolver::createController	0	0.0%	1	0.4%	2	0.8%	0	0.0%	0	0.0%
Drupal\Core\Config\Context\ConfigContextFactory::get	0	0.0%	-1	-0.4%	-1	-0.4%	0	0.0%	0	0.0%
Drupal\Core\DrupalKernel::initializeContainer	0	0.0%	0	0.0%	-3	-1.2%	0	0.0%	0	0.0%
file_stream_wrapper_get_instance_by_scheme	0	0.0%	0	0.0%	-2	-0.8%	0	0.0%	0	0.0%
_drupal_simpletest_conf_path	0	0.0%	0	0.0%	0	0.0%	0	0.0%	0	0.0%
*Child functions*
Symfony\Component\ClassLoader\ClassLoader::loadClass	0	N/A%	-248	-100.0%	-253	-100.8%	0	0.0%	0	0.0%
Symfony\Component\ClassLoader\ApcClassLoader::loadClass	0	N/A%	-1	-0.4%	-15	-6.0%	352	100.0%	6,856	110.6%