XHProf: Hierarchical Profiler Report

Diff Report: Run #519d4dc9980f7: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519d4cd4e396d: 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 #519d4dc9980f7	Run #519d4cd4e396d	Diff	Diff%
Number of Function Calls	180	180	0	0.0%
Incl. Wall Time (microsec)	108,052	108,994	942	0.9%
Incl. Wall Time (microsec) per call	600	606	5	0.9%
Excl. Wall Time (microsec)	5,204	5,226	22	0.4%
Incl. CPU (microsecs)	36,957	37,134	177	0.5%
Incl. CPU (microsecs) per call	205	206	1	0.5%
Excl. CPU (microsec)	4,619	4,700	81	1.8%
Incl. MemUse (bytes)	284,036	284,036	0	0.0%
Incl. MemUse (bytes) per call	1,578	1,578	0	0.0%
Excl. MemUse (bytes)	-84,600	-84,600	0	0.0%
Incl. PeakMemUse (bytes)	185,324	185,616	292	0.2%
Incl. PeakMemUse (bytes) per call	1,030	1,031	2	0.2%
Excl. PeakMemUse (bytes)	27,808	27,912	104	0.4%

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%	942	6.1%	177	1.2%	0	0.0%	292	45.3%
Exclusive Metrics Diff for Current Function			22	2.3%	81	45.8%	0	N/A%	104	35.6%
*Parent functions*
Drupal\Core\KeyValueStore\DatabaseStorage::getMultiple	0	N/A%	1,043	110.7%	48	27.1%	4	N/A%	0	0.0%
Drupal\Core\Cache\DatabaseBackend::getMultiple	0	N/A%	526	55.8%	344	194.4%	8	N/A%	292	100.0%
Drupal\Core\Cache\DatabaseBackend::getMultiple@1	0	N/A%	-292	-31.0%	-91	-51.4%	0	N/A%	0	0.0%
Drupal\Core\Database\Query\Select::execute	0	N/A%	-184	-19.5%	-123	-69.5%	0	N/A%	0	0.0%
Drupal\Core\Cache\DatabaseBackend::checksumTags	0	N/A%	-144	-15.3%	-38	-21.5%	-12	N/A%	0	0.0%
Drupal\Core\Database\Query\Update::execute	0	N/A%	-56	-5.9%	-9	-5.1%	0	N/A%	0	0.0%
db_query	0	N/A%	48	5.1%	38	21.5%	0	N/A%	0	0.0%
Drupal\Core\Path\AliasManager::lookupPathSource	0	N/A%	-14	-1.5%	0	0.0%	0	N/A%	0	0.0%
Drupal\Core\Routing\RouteProvider::getRouteCollectionForRequest	0	N/A%	12	1.3%	5	2.8%	0	N/A%	0	0.0%
Drupal\Core\Database\Driver\mysql\Connection::queryRange	0	N/A%	3	0.3%	3	1.7%	0	N/A%	0	0.0%
*Child functions*
Drupal\Core\Database\Statement::execute	0	N/A%	734	77.9%	-69	-39.0%	-16	N/A%	0	0.0%
Drupal\Core\Database\Connection::prepareQuery	0	N/A%	96	10.2%	96	54.2%	16	N/A%	84	28.8%
Drupal\Core\Database\Connection::expandArguments	0	N/A%	71	7.5%	65	36.7%	0	N/A%	0	0.0%
Drupal\Core\Database\Connection::defaultOptions	0	N/A%	19	2.0%	4	2.3%	0	N/A%	104	35.6%
PDOStatement::rowCount	0	N/A%	0	0.0%	0	0.0%	0	N/A%	0	0.0%