XHProf: Hierarchical Profiler Report

Diff Report: Run #51ec3b81ad265: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec3c5ab9ae4: 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 #51ec3b81ad265	Run #51ec3c5ab9ae4	Diff	Diff%
Number of Function Calls	135	135	0	0.0%
Incl. Wall Time (microsec)	30,521	29,211	-1,310	-4.3%
Incl. Wall Time (microsec) per call	226	216	-10	-4.3%
Excl. Wall Time (microsec)	1,955	1,956	1	0.1%
Incl. CPU (microsecs)	17,676	16,863	-813	-4.6%
Incl. CPU (microsecs) per call	131	125	-6	-4.6%
Excl. CPU (microsec)	1,615	1,582	-33	-2.0%
Incl. MemUse (bytes)	898,000	898,016	16	0.0%
Incl. MemUse (bytes) per call	6,652	6,652	0	0.0%
Excl. MemUse (bytes)	-110,360	-110,416	-56	-0.1%
Incl. PeakMemUse (bytes)	631,008	631,312	304	0.0%
Incl. PeakMemUse (bytes) per call	4,674	4,676	2	0.0%
Excl. PeakMemUse (bytes)	40,160	40,136	-24	-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%	-1,310	-350.3%	-813	-76.8%	16	0.0%	304	0.8%
Exclusive Metrics Diff for Current Function			1	0.1%	-33	-4.1%	-56	-350.0%	-24	-7.9%
*Parent functions*
Drupal\Core\Cache\DatabaseBackend::getMultiple	0	N/A%	-1,511	-115.3%	-757	-93.1%	24	150.0%	144	47.4%
Drupal\Core\Database\Query\Delete::execute	0	N/A%	149	11.4%	-1	-0.1%	0	0.0%	0	0.0%
Drupal\Core\KeyValueStore\DatabaseStorage::getMultiple	0	N/A%	102	7.8%	2	0.2%	0	0.0%	0	0.0%
Drupal\Core\Database\Query\Select::execute	0	N/A%	-80	-6.1%	-51	-6.3%	-8	-50.0%	48	15.8%
Drupal\Core\Database\Query\Update::execute	0	N/A%	75	5.7%	11	1.4%	0	0.0%	0	0.0%
Drupal\Core\Routing\RouteProvider::getRoutesByPath	0	N/A%	-64	-4.9%	-61	-7.5%	0	0.0%	-88	-28.9%
Drupal\Core\Path\AliasManager::lookupPathSource	0	N/A%	18	1.4%	7	0.9%	0	0.0%	0	0.0%
Drupal\Core\Routing\RouteProvider::getRoutesByNames	0	N/A%	-3	-0.2%	0	0.0%	0	0.0%	0	0.0%
Drupal\Core\Cache\DatabaseBackend::checksumTags	0	N/A%	2	0.2%	24	3.0%	0	0.0%	0	0.0%
Drupal\Core\Database\Driver\mysql\Connection::queryRange	0	N/A%	1	0.1%	1	0.1%	0	0.0%	0	0.0%
db_query	0	N/A%	1	0.1%	2	0.2%	0	0.0%	0	0.0%
Drupal\Core\Database\Driver\mysql\Insert::execute	0	N/A%	0	0.0%	10	1.2%	0	0.0%	200	65.8%
*Child functions*
Drupal\Core\Database\Statement::execute	0	N/A%	-1,162	-88.7%	-649	-79.8%	16	100.0%	304	100.0%
Drupal\Core\Database\Connection::expandArguments	0	N/A%	-84	-6.4%	-91	-11.2%	0	0.0%	-80	-26.3%
Drupal\Core\Database\Connection::defaultOptions	0	N/A%	-38	-2.9%	-45	-5.5%	56	350.0%	56	18.4%
Drupal\Core\Database\Connection::prepareQuery	0	N/A%	-27	-2.1%	4	0.5%	0	0.0%	48	15.8%
PDOStatement::rowCount	0	N/A%	0	0.0%	1	0.1%	0	0.0%	0	0.0%
PDO::lastInsertId	0	N/A%	0	0.0%	0	0.0%	0	0.0%	0	0.0%