XHProf: Hierarchical Profiler Report

Diff Report: Run #534ad9c94e95b: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #534ad8dec7444: 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 #534ad9c94e95b	Run #534ad8dec7444	Diff	Diff%
Number of Function Calls	222	222	0	0.0%
Incl. Wall Time (microsec)	89,369	90,566	1,197	1.3%
Incl. Wall Time (microsec) per call	403	408	5	1.3%
Excl. Wall Time (microsec)	4,471	4,494	23	0.5%
Incl. CPU (microsecs)	34,439	35,064	625	1.8%
Incl. CPU (microsecs) per call	155	158	3	1.8%
Excl. CPU (microsec)	3,806	3,836	30	0.8%
Incl. MemUse (bytes)	346,868	346,784	-84	-0.0%
Incl. MemUse (bytes) per call	1,562	1,562	-0	-0.0%
Excl. MemUse (bytes)	-126,884	-126,900	-16	-0.0%
Incl. PeakMemUse (bytes)	402,924	404,572	1,648	0.4%
Incl. PeakMemUse (bytes) per call	1,815	1,822	7	0.4%
Excl. PeakMemUse (bytes)	35,876	36,060	184	0.5%

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%	1,197	72.6%	625	125.3%	-84	-0.4%	1,648	6.8%
Exclusive Metrics Diff for Current Function			23	1.9%	30	4.8%	-16	-19.0%	184	11.2%
*Parent functions*
Drupal\Core\Cache\DatabaseBackend::getMultiple	0	N/A%	569	47.5%	521	83.4%	-84	-100.0%	8	0.5%
Drupal\Core\KeyValueStore\DatabaseStorage::getMultiple	0	N/A%	302	25.2%	63	10.1%	0	0.0%	1,640	99.5%
Drupal\Core\Path\AliasStorage::lookupPathSource	0	N/A%	130	10.9%	53	8.5%	0	0.0%	0	0.0%
Drupal\Core\Cache\DatabaseBackend::checksumTags	0	N/A%	122	10.2%	-52	-8.3%	0	0.0%	0	0.0%
Drupal\Core\Routing\RouteProvider::getRoutesByPath	0	N/A%	79	6.6%	-2	-0.3%	0	0.0%	0	0.0%
Drupal\Core\Routing\RouteProvider::getRoutesByNames	0	N/A%	-68	-5.7%	9	1.4%	0	0.0%	0	0.0%
Drupal\Core\Cache\DatabaseBackend::getMultiple@1	0	N/A%	52	4.3%	-8	-1.3%	0	0.0%	0	0.0%
Drupal\Core\Database\Query\Update::execute	0	N/A%	22	1.8%	-2	-0.3%	0	0.0%	0	0.0%
Drupal\Core\Database\Query\Select::execute	0	N/A%	-10	-0.8%	51	8.2%	0	0.0%	0	0.0%
Drupal\user\UserStorage::addRoles	0	N/A%	-1	-0.1%	-8	-1.3%	0	0.0%	0	0.0%
*Child functions*
Drupal\Core\Database\Statement::execute	0	N/A%	999	83.5%	427	68.3%	-80	-95.2%	56	3.4%
Drupal\Core\Database\Connection::prepareQuery	0	N/A%	111	9.3%	106	17.0%	-4	-4.8%	500	30.3%
Drupal\Core\Database\Connection::expandArguments	0	N/A%	78	6.5%	90	14.4%	0	0.0%	820	49.8%
Drupal\Core\Database\Connection::defaultOptions	0	N/A%	-13	-1.1%	-26	-4.2%	16	19.0%	88	5.3%
Drupal\Core\Database\Statement::rowCount	0	N/A%	-1	-0.1%	-2	-0.3%	0	0.0%	0	0.0%