XHProf: Hierarchical Profiler Report

Diff Report: Run #52e436ce9c71d: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #52e4374042ace: XHProf Run (Namespace=drupal-perf-drupalcon)
Tip: Click a function name below to drill down.

Drupal\Core\Database\Database::openConnection	Run #52e436ce9c71d	Run #52e4374042ace	Diff	Diff%
Number of Function Calls	1	1	0	0.0%
Incl. Wall Time (microsec)	629	596	-33	-5.2%
Incl. Wall Time (microsec) per call	629	596	-33	-5.2%
Excl. Wall Time (microsec)	30	28	-2	-6.7%
Incl. CPU (microsecs)	419	398	-21	-5.0%
Incl. CPU (microsecs) per call	419	398	-21	-5.0%
Excl. CPU (microsec)	24	19	-5	-20.8%
Incl. MemUse (bytes)	151,720	151,392	-328	-0.2%
Incl. MemUse (bytes) per call	151,720	151,392	-328	-0.2%
Excl. MemUse (bytes)	3,488	3,488	0	0.0%
Incl. PeakMemUse (bytes)	149,608	149,280	-328	-0.2%
Incl. PeakMemUse (bytes) per call	149,608	149,280	-328	-0.2%
Excl. PeakMemUse (bytes)	3,712	3,712	0	0.0%

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\Database::openConnection	0	N/A%	-33	-2.8%	-21	-2.1%	-328	-0.4%	-328	-0.4%
Exclusive Metrics Diff for Current Function			-2	-6.1%	-5	-23.8%	0	0.0%	0	0.0%
*Parent function*
Drupal\Core\Database\Database::getConnection	0	N/A%	-33	-100.0%	-21	-100.0%	-328	-100.0%	-328	-100.0%
*Child functions*
Drupal\Core\Database\Driver\mysql\Connection::open	0	N/A%	-27	-81.8%	-14	-66.7%	0	0.0%	0	0.0%
Symfony\Component\ClassLoader\ApcClassLoader::loadClass	0	N/A%	-2	-6.1%	-1	-4.8%	-328	-100.0%	-328	-100.0%
Drupal\Core\Database\Driver\mysql\Connection::__construct	0	N/A%	-2	-6.1%	-2	-9.5%	0	0.0%	0	0.0%
Drupal\Core\Database\Connection::setKey	0	N/A%	0	0.0%	0	0.0%	0	0.0%	0	0.0%
Drupal\Core\Database\Connection::setTarget	0	N/A%	0	0.0%	1	4.8%	0	0.0%	0	0.0%
Drupal\Core\Database\Database::parseConnectionInfo	0	N/A%	0	0.0%	0	0.0%	0	0.0%	0	0.0%