XHProf: Hierarchical Profiler Report

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