XHProf: Hierarchical Profiler Report

Diff Report: Run #53923d861ff11: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #53923e49d2b58: XHProf Run (Namespace=drupal-perf-drupalcon)
Tip: Click a function name below to drill down.

Regression/Improvement summary for Drupal\Core\Database\Connection::query

Drupal\Core\Database\Connection::query	Run #53923d861ff11	Run #53923e49d2b58	Diff	Diff%
Number of Function Calls	258	258	0	0.0%
Incl. Wall Time (microsec)	110,110	109,608	-502	-0.5%
Incl. Wall Time (microsec) per call	427	425	-2	-0.5%
Excl. Wall Time (microsec)	4,944	4,897	-47	-1.0%
Incl. CPU (microsecs)	38,590	38,745	155	0.4%
Incl. CPU (microsecs) per call	150	150	1	0.4%
Excl. CPU (microsec)	4,240	4,128	-112	-2.6%
Incl. MemUse (bytes)	408,080	375,312	-32,768	-8.0%
Incl. MemUse (bytes) per call	1,582	1,455	-127	-8.0%
Excl. MemUse (bytes)	-120,544	-120,592	-48	-0.0%
Incl. PeakMemUse (bytes)	482,308	459,996	-22,312	-4.6%
Incl. PeakMemUse (bytes) per call	1,869	1,783	-86	-4.6%
Excl. PeakMemUse (bytes)	102,208	170,180	67,972	66.5%

Parent/Child Regression/Improvement report for Drupal\Core\Database\Connection::query [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*
Drupal\Core\Database\Connection::query	0	N/A%	-502	-32.1%	155	14.2%	-32,768	-3757.8%	-22,312	-3205.7%
Exclusive Metrics Diff for Current Function			-47	-9.4%	-112	-72.3%	-48	-0.1%	67,972	304.6%
*Parent functions*
Drupal\Core\Database\Query\Select::execute	0	N/A%	-246	-49.0%	-112	-72.3%	-32,764	-100.0%	-64,456	-288.9%
Drupal\Core\Cache\DatabaseBackend::getMultiple	0	N/A%	-1,520	-302.8%	-247	-159.4%	-4	-0.0%	54,100	242.5%
Drupal\Core\Config\DatabaseStorage::listAll	0	N/A%	237	47.2%	47	30.3%	0	0.0%	-10,748	-48.2%
Drupal\Core\Cache\DatabaseBackend::checksumTags	0	N/A%	595	118.5%	418	269.7%	0	0.0%	-7,276	-32.6%
Drupal\Core\Config\DatabaseStorage::readMultiple	0	N/A%	550	109.6%	192	123.9%	8	0.0%	5,960	26.7%
Drupal\Core\Database\Driver\mysql\Insert::execute	0	N/A%	-439	-87.5%	-144	-92.9%	0	0.0%	160	0.7%
Drupal\Core\Path\AliasStorage::lookupPathSource	0	N/A%	-91	-18.1%	22	14.2%	-8	-0.0%	-72	-0.3%
Drupal\Core\KeyValueStore\DatabaseStorage::getMultiple	0	N/A%	-339	-67.5%	22	14.2%	0	0.0%	20	0.1%
Drupal\node\Access\NodeRevisionAccessCheck::checkAccess	0	N/A%	75	14.9%	-7	-4.5%	0	0.0%	0	0.0%
Drupal\Core\Path\AliasStorage::preloadPathAlias	0	N/A%	10	2.0%	-50	-32.3%	0	0.0%	0	0.0%
Drupal\Core\Routing\RouteProvider::getRoutesByNames	0	N/A%	810	161.4%	44	28.4%	0	0.0%	0	0.0%
Drupal\Core\Routing\RouteProvider::getRoutesByPath	0	N/A%	-93	-18.5%	-17	-11.0%	0	0.0%	0	0.0%
Drupal\user\UserStorage::addRoles	0	N/A%	-51	-10.2%	-13	-8.4%	0	0.0%	0	0.0%
*Child functions*
Drupal\Core\Database\Connection::prepareQuery	0	N/A%	-14	-2.8%	8	5.2%	-32,752	-100.0%	-66,648	-298.7%
Drupal\Core\Database\Connection::expandArguments	0	N/A%	-64	-12.7%	-36	-23.2%	0	0.0%	-18,992	-85.1%
Drupal\Core\Database\Connection::defaultOptions	0	N/A%	-22	-4.4%	-19	-12.3%	-8	-0.0%	-4,652	-20.8%
Drupal\Core\Database\Statement::execute	0	N/A%	-362	-72.1%	309	199.4%	40	0.1%	8	0.0%
PDO::lastInsertId	0	N/A%	7	1.4%	5	3.2%	0	0.0%	0	0.0%