XHProf: Hierarchical Profiler Report

Diff Report: Run #52e49b394aea8: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #52e49acfb0eb8: 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 #52e49b394aea8	Run #52e49acfb0eb8	Diff	Diff%
Number of Function Calls	95	94	-1	-1.1%
Incl. Wall Time (microsec)	22,795	22,362	-433	-1.9%
Incl. Wall Time (microsec) per call	240	238	-2	-0.9%
Excl. Wall Time (microsec)	1,436	1,402	-34	-2.4%
Incl. CPU (microsecs)	11,151	11,021	-130	-1.2%
Incl. CPU (microsecs) per call	117	117	-0	-0.1%
Excl. CPU (microsec)	1,179	1,159	-20	-1.7%
Incl. MemUse (bytes)	965,016	959,192	-5,824	-0.6%
Incl. MemUse (bytes) per call	10,158	10,204	46	0.5%
Excl. MemUse (bytes)	83,032	83,768	736	0.9%
Incl. PeakMemUse (bytes)	587,824	589,296	1,472	0.3%
Incl. PeakMemUse (bytes) per call	6,188	6,269	81	1.3%
Excl. PeakMemUse (bytes)	126,688	126,968	280	0.2%

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	-1	-20.0%	-433	-39.0%	-130	-16.0%	-5,824	-22.5%	1,472	5.6%
Exclusive Metrics Diff for Current Function			-34	-7.9%	-20	-15.4%	736	12.6%	280	19.0%
*Parent functions*
Drupal\Core\Cache\DatabaseBackend::getMultiple	-1	-100.0%	-191	-44.1%	-103	-79.2%	-5,848	-100.4%	184	12.5%
Drupal\Core\Routing\RouteProvider::getRoutesByPath	0	0.0%	-169	-39.0%	-35	-26.9%	24	0.4%	432	29.3%
Drupal\Core\Database\Query\Select::execute	0	0.0%	-44	-10.2%	-9	-6.9%	0	0.0%	-40	-2.7%
Drupal\Core\KeyValueStore\DatabaseStorage::getMultiple	0	0.0%	-32	-7.4%	7	5.4%	0	0.0%	384	26.1%
Drupal\Core\Path\AliasManager::lookupPathSource	0	0.0%	6	1.4%	1	0.8%	0	0.0%	0	0.0%
Drupal\Core\Routing\RouteProvider::getRoutesByNames	0	0.0%	-3	-0.7%	-3	-2.3%	0	0.0%	0	0.0%
Drupal\Core\Cache\DatabaseBackend::checksumTags	0	0.0%	-1	-0.2%	8	6.2%	0	0.0%	168	11.4%
Drupal\Core\Database\Driver\mysql\Connection::queryRange	0	0.0%	1	0.2%	4	3.1%	0	0.0%	344	23.4%
*Child functions*
Drupal\Core\Database\Statement::execute	-1	-25.0%	-368	-85.0%	-70	-53.8%	-4,840	-83.1%	600	40.8%
Drupal\Core\Database\Connection::expandArguments	-1	-25.0%	70	16.2%	70	53.8%	-8	-0.1%	152	10.3%
Drupal\Core\Database\Connection::prepareQuery	-1	-25.0%	-53	-12.2%	-52	-40.0%	-952	-16.3%	8	0.5%
print_r	0	0.0%	-39	-9.0%	-40	-30.8%	0	0.0%	112	7.6%
Drupal\Core\Database\Connection::defaultOptions	-1	-25.0%	-6	-1.4%	-15	-11.5%	-760	-13.0%	320	21.7%
Symfony\Component\ClassLoader\ApcClassLoader::loadClass	0	0.0%	-3	-0.7%	-2	-1.5%	0	0.0%	0	0.0%
Exception::__construct	0	0.0%	0	0.0%	1	0.8%	0	0.0%	0	0.0%
Exception::getMessage	0	0.0%	0	0.0%	-2	-1.5%	0	0.0%	0	0.0%
Exception::getCode	0	0.0%	0	0.0%	1	0.8%	0	0.0%	0	0.0%
substr	0	0.0%	0	0.0%	-1	-0.8%	0	0.0%	0	0.0%