XHProf: Hierarchical Profiler Report

Diff Report: Run #52e49acfb0eb8: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #52e49b394aea8: XHProf Run (Namespace=drupal-perf-drupalcon)
Tip: Click a function name below to drill down.

Drupal\Core\Database\Database::openConnection	Run #52e49acfb0eb8	Run #52e49b394aea8	Diff	Diff%
Number of Function Calls	1	1	0	0.0%
Incl. Wall Time (microsec)	608	603	-5	-0.8%
Incl. Wall Time (microsec) per call	608	603	-5	-0.8%
Excl. Wall Time (microsec)	30	29	-1	-3.3%
Incl. CPU (microsecs)	408	404	-4	-1.0%
Incl. CPU (microsecs) per call	408	404	-4	-1.0%
Excl. CPU (microsec)	24	22	-2	-8.3%
Incl. MemUse (bytes)	151,392	151,368	-24	-0.0%
Incl. MemUse (bytes) per call	151,392	151,368	-24	-0.0%
Excl. MemUse (bytes)	3,488	3,488	0	0.0%
Incl. PeakMemUse (bytes)	149,280	149,256	-24	-0.0%
Incl. PeakMemUse (bytes) per call	149,280	149,256	-24	-0.0%
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%	-5	-0.5%	-4	-0.5%	-24	-0.1%	-24	-0.1%
Exclusive Metrics Diff for Current Function			-1	-20.0%	-2	-50.0%	0	0.0%	0	0.0%
*Parent function*
Drupal\Core\Database\Database::getConnection	0	N/A%	-5	-100.0%	-4	-100.0%	-24	-100.0%	-24	-100.0%
*Child functions*
Drupal\Core\Database\Driver\mysql\Connection::open	0	N/A%	-3	-60.0%	-2	-50.0%	0	0.0%	0	0.0%
Symfony\Component\ClassLoader\ApcClassLoader::loadClass	0	N/A%	-1	-20.0%	1	25.0%	-24	-100.0%	-24	-100.0%
Drupal\Core\Database\Driver\mysql\Connection::__construct	0	N/A%	1	20.0%	0	0.0%	0	0.0%	0	0.0%
Drupal\Core\Database\Database::parseConnectionInfo	0	N/A%	-1	-20.0%	-2	-50.0%	0	0.0%	0	0.0%
Drupal\Core\Database\Connection::setKey	0	N/A%	0	0.0%	1	25.0%	0	0.0%	0	0.0%
Drupal\Core\Database\Connection::setTarget	0	N/A%	0	0.0%	0	0.0%	0	0.0%	0	0.0%