XHProf: Hierarchical Profiler Report

Diff Report: Run #52e49b394aea8: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #52e49acfb0eb8: XHProf Run (Namespace=drupal-perf-drupalcon)
Tip: Click a function name below to drill down.

Regression/Improvement summary for array_keys

array_keys	Run #52e49b394aea8	Run #52e49acfb0eb8	Diff	Diff%
Number of Function Calls	887	884	-3	-0.3%
Incl. Wall Time (microsec)	487	508	21	4.3%
Incl. Wall Time (microsec) per call	1	1	0	4.7%
Excl. Wall Time (microsec)	487	508	21	4.3%
Incl. CPU (microsecs)	1,291	1,322	31	2.4%
Incl. CPU (microsecs) per call	1	1	0	2.7%
Excl. CPU (microsec)	1,291	1,322	31	2.4%
Incl. MemUse (bytes)	327,328	325,768	-1,560	-0.5%
Incl. MemUse (bytes) per call	369	369	-1	-0.1%
Excl. MemUse (bytes)	327,328	325,768	-1,560	-0.5%
Incl. PeakMemUse (bytes)	44,312	45,184	872	2.0%
Incl. PeakMemUse (bytes) per call	50	51	1	2.3%
Excl. PeakMemUse (bytes)	44,312	45,184	872	2.0%

Parent/Child Regression/Improvement report for array_keys [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*
array_keys	-3	-100.0%	21	1.9%	31	3.8%	-1,560	-6.0%	872	3.3%
Exclusive Metrics Diff for Current Function			21	100.0%	31	100.0%	-1,560	-100.0%	872	100.0%
*Parent functions*
Drupal\Core\Database\Connection::expandArguments	-1	-33.3%	15	71.4%	13	41.9%	-336	-21.5%	0	0.0%
Drupal\Core\Render\Element::children	0	0.0%	10	47.6%	-3	-9.7%	0	0.0%	0	0.0%
Drupal\Core\Extension\ModuleHandler::getImplementations	0	0.0%	-9	-42.9%	1	3.2%	0	0.0%	88	10.1%
Drupal\Core\Cache\DatabaseBackend::checksumTags	-1	-33.3%	3	14.3%	5	16.1%	-848	-54.4%	424	48.6%
Drupal\Core\Routing\RouteCompiler::getPathWithoutDefaults	0	0.0%	3	14.3%	7	22.6%	0	0.0%	0	0.0%
Drupal\Core\Extension\ModuleHandler::alter	0	0.0%	-2	-9.5%	-3	-9.7%	0	0.0%	0	0.0%
Drupal\Core\DrupalKernel::initializeContainer	0	0.0%	2	9.5%	3	9.7%	0	0.0%	0	0.0%
Drupal\field\Entity\FieldInstance::getPropertyNames	0	0.0%	-1	-4.8%	-1	-3.2%	0	0.0%	0	0.0%
Drupal\Core\Render\Element::getVisibleChildren	0	0.0%	0	0.0%	1	3.2%	0	0.0%	0	0.0%
theme@1	0	0.0%	0	0.0%	0	0.0%	0	0.0%	0	0.0%
theme@2	0	0.0%	0	0.0%	0	0.0%	0	0.0%	0	0.0%
Drupal\Core\Asset\CssCollectionRenderer::render	0	0.0%	0	0.0%	1	3.2%	0	0.0%	0	0.0%
theme	0	0.0%	0	0.0%	-1	-3.2%	0	0.0%	0	0.0%
system_page_alter	0	0.0%	0	0.0%	0	0.0%	0	0.0%	0	0.0%
contextual_preprocess	0	0.0%	0	0.0%	-1	-3.2%	0	0.0%	0	0.0%
Drupal\field\Entity\Field::getSchema	0	0.0%	0	0.0%	0	0.0%	0	0.0%	0	0.0%
Symfony\Component\HttpFoundation\Request::getAcceptableContentTypes	0	0.0%	0	0.0%	-1	-3.2%	0	0.0%	0	0.0%
Drupal\Core\Cache\DatabaseBackend::getMultiple	-1	-33.3%	0	0.0%	7	22.6%	-384	-24.6%	0	0.0%
Drupal\Core\Authentication\AuthenticationManager::defaultProviderId	0	0.0%	0	0.0%	-1	-3.2%	0	0.0%	0	0.0%
Drupal\Core\Database\Query\Select::prepareCountQuery	0	0.0%	0	0.0%	1	3.2%	0	0.0%	0	0.0%
block_page_build	0	0.0%	0	0.0%	1	3.2%	0	0.0%	0	0.0%
Drupal\Core\Routing\RouteProvider::getRoutesByNames	0	0.0%	0	0.0%	2	6.5%	8	0.5%	360	41.3%