XHProf: Hierarchical Profiler Report

Diff Report: Run #519d9cf28420e: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519d9d94433aa: 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 #519d9cf28420e	Run #519d9d94433aa	Diff	Diff%
Number of Function Calls	154	154	0	0.0%
Incl. Wall Time (microsec)	57,814	58,053	239	0.4%
Incl. Wall Time (microsec) per call	375	377	2	0.4%
Excl. Wall Time (microsec)	2,727	2,837	110	4.0%
Incl. CPU (microsecs)	23,962	22,585	-1,377	-5.7%
Incl. CPU (microsecs) per call	156	147	-9	-5.7%
Excl. CPU (microsec)	2,396	2,506	110	4.6%
Incl. MemUse (bytes)	1,014,800	1,014,728	-72	-0.0%
Incl. MemUse (bytes) per call	6,590	6,589	-0	-0.0%
Excl. MemUse (bytes)	-129,848	-129,872	-24	-0.0%
Incl. PeakMemUse (bytes)	425,232	421,112	-4,120	-1.0%
Incl. PeakMemUse (bytes) per call	2,761	2,734	-27	-1.0%
Excl. PeakMemUse (bytes)	26,192	25,320	-872	-3.3%

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%	239	9.5%	-1,377	-145.7%	-72	-0.1%	-4,120	-5.7%
Exclusive Metrics Diff for Current Function			110	46.0%	110	8.0%	-24	-33.3%	-872	-21.2%
*Parent functions*
Drupal\Core\Database\Query\Select::execute	0	N/A%	-1,606	-672.0%	-243	-17.6%	0	0.0%	288	7.0%
Drupal\Core\KeyValueStore\DatabaseStorage::getMultiple	0	N/A%	793	331.8%	-24	-1.7%	8	11.1%	-5,576	-135.3%
Drupal\Core\Cache\DatabaseBackend::getMultiple@1	0	N/A%	609	254.8%	12	0.9%	-16	-22.2%	160	3.9%
db_query	0	N/A%	206	86.2%	72	5.2%	0	0.0%	0	0.0%
Drupal\Core\Path\AliasManager::lookupPathSource	0	N/A%	174	72.8%	25	1.8%	0	0.0%	0	0.0%
Drupal\Core\Cache\DatabaseBackend::getMultiple	0	N/A%	130	54.4%	-1,148	-83.4%	-88	-122.2%	-272	-6.6%
Drupal\Core\Database\Query\Update::execute	0	N/A%	-99	-41.4%	-20	-1.5%	0	0.0%	0	0.0%
Drupal\Core\Cache\DatabaseBackend::checksumTags	0	N/A%	41	17.2%	-7	-0.5%	24	33.3%	1,280	31.1%
Drupal\Core\Routing\RouteProvider::getRouteCollectionForRequest	0	N/A%	-18	-7.5%	-45	-3.3%	0	0.0%	0	0.0%
Drupal\Core\Database\Driver\mysql\Connection::queryRange	0	N/A%	9	3.8%	1	0.1%	0	0.0%	0	0.0%
*Child functions*
Drupal\Core\Database\Statement::execute	0	N/A%	224	93.7%	-1,392	-101.1%	-40	-55.6%	-536	-13.0%
Drupal\Core\Database\Connection::prepareQuery	0	N/A%	-54	-22.6%	-56	-4.1%	0	0.0%	-464	-11.3%
Drupal\Core\Database\Connection::expandArguments	0	N/A%	-25	-10.5%	-23	-1.7%	0	0.0%	-1,600	-38.8%
Drupal\Core\Database\Connection::defaultOptions	0	N/A%	-15	-6.3%	-14	-1.0%	-8	-11.1%	-648	-15.7%
PDOStatement::rowCount	0	N/A%	-1	-0.4%	-2	-0.1%	0	0.0%	0	0.0%