XHProf: Hierarchical Profiler Report

Diff Report: Run #51ec517fc2424: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec52a09990a: 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 #51ec517fc2424	Run #51ec52a09990a	Diff	Diff%
Number of Function Calls	170	170	0	0.0%
Incl. Wall Time (microsec)	40,988	40,904	-84	-0.2%
Incl. Wall Time (microsec) per call	241	241	-0	-0.2%
Excl. Wall Time (microsec)	2,503	2,455	-48	-1.9%
Incl. CPU (microsecs)	21,994	22,079	85	0.4%
Incl. CPU (microsecs) per call	129	130	1	0.4%
Excl. CPU (microsec)	2,057	2,038	-19	-0.9%
Incl. MemUse (bytes)	1,111,520	1,112,064	544	0.0%
Incl. MemUse (bytes) per call	6,538	6,542	3	0.0%
Excl. MemUse (bytes)	-138,072	-138,080	-8	-0.0%
Incl. PeakMemUse (bytes)	710,776	704,288	-6,488	-0.9%
Incl. PeakMemUse (bytes) per call	4,181	4,143	-38	-0.9%
Excl. PeakMemUse (bytes)	45,560	45,528	-32	-0.1%

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%	-84	-2.1%	85	2.0%	544	2.5%	-6,488	-28.2%
Exclusive Metrics Diff for Current Function			-48	-57.1%	-19	-22.4%	-8	-1.5%	-32	-0.5%
*Parent functions*
Drupal\Core\Cache\DatabaseBackend::getMultiple	0	N/A%	611	727.4%	189	222.4%	568	104.4%	-3,872	-59.7%
Drupal\Core\Routing\RouteProvider::getRoutesByPath	0	N/A%	-428	-509.5%	-59	-69.4%	0	0.0%	-104	-1.6%
Drupal\Core\Cache\DatabaseBackend::checksumTags	0	N/A%	-343	-408.3%	-80	-94.1%	0	0.0%	-88	-1.4%
Drupal\Core\KeyValueStore\DatabaseStorage::getMultiple	0	N/A%	-321	-382.1%	3	3.5%	0	0.0%	-408	-6.3%
Drupal\Core\Database\Driver\mysql\Insert::execute	0	N/A%	176	209.5%	2	2.4%	0	0.0%	0	0.0%
Drupal\Core\Cache\DatabaseBackend::getMultiple@1	0	N/A%	-161	-191.7%	-57	-67.1%	0	0.0%	0	0.0%
Drupal\Core\Database\Query\Delete::execute	0	N/A%	141	167.9%	-11	-12.9%	0	0.0%	-360	-5.5%
Drupal\Core\Database\Query\Select::execute	0	N/A%	107	127.4%	72	84.7%	0	0.0%	-360	-5.5%
Drupal\Core\Path\AliasManager::lookupPathSource	0	N/A%	98	116.7%	-1	-1.2%	0	0.0%	0	0.0%
db_query	0	N/A%	92	109.5%	27	31.8%	-24	-4.4%	-248	-3.8%
Drupal\Core\Database\Query\Update::execute	0	N/A%	-76	-90.5%	-12	-14.1%	0	0.0%	-1,048	-16.2%
Drupal\Core\Routing\RouteProvider::getRoutesByNames	0	N/A%	19	22.6%	8	9.4%	0	0.0%	0	0.0%
Drupal\Core\Database\Driver\mysql\Connection::queryRange	0	N/A%	1	1.2%	4	4.7%	0	0.0%	0	0.0%
*Child functions*
Drupal\Core\Database\Statement::execute	0	N/A%	-62	-73.8%	72	84.7%	472	86.8%	-3,736	-57.6%
Drupal\Core\Database\Connection::expandArguments	0	N/A%	39	46.4%	55	64.7%	0	0.0%	-1,792	-27.6%
Drupal\Core\Database\Connection::defaultOptions	0	N/A%	-27	-32.1%	-10	-11.8%	32	5.9%	8	0.1%
Drupal\Core\Database\Connection::prepareQuery	0	N/A%	15	17.9%	-13	-15.3%	48	8.8%	-936	-14.4%
PDO::lastInsertId	0	N/A%	-1	-1.2%	-1	-1.2%	0	0.0%	0	0.0%
PDOStatement::rowCount	0	N/A%	0	0.0%	1	1.2%	0	0.0%	0	0.0%