XHProf: Hierarchical Profiler Report

Diff Report: Run #51ec517fc2424: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec52a09990a: XHProf Run (Namespace=drupal-perf-drupalcon)
Tip: Click a function name below to drill down.

Drupal\Core\Database\Connection::getDriverClass	Run #51ec517fc2424	Run #51ec52a09990a	Diff	Diff%
Number of Function Calls	23	23	0	0.0%
Incl. Wall Time (microsec)	932	891	-41	-4.4%
Incl. Wall Time (microsec) per call	41	39	-2	-4.4%
Excl. Wall Time (microsec)	76	75	-1	-1.3%
Incl. CPU (microsecs)	948	915	-33	-3.5%
Incl. CPU (microsecs) per call	41	40	-1	-3.5%
Excl. CPU (microsec)	79	91	12	15.2%
Incl. MemUse (bytes)	302,896	302,784	-112	-0.0%
Incl. MemUse (bytes) per call	13,169	13,165	-5	-0.0%
Excl. MemUse (bytes)	5,824	5,824	0	0.0%
Incl. PeakMemUse (bytes)	240,752	242,040	1,288	0.5%
Incl. PeakMemUse (bytes) per call	10,467	10,523	56	0.5%
Excl. PeakMemUse (bytes)	3,424	3,424	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\Connection::getDriverClass	0	N/A%	-41	-1.0%	-33	-0.8%	-112	-0.5%	1,288	5.6%
Exclusive Metrics Diff for Current Function			-1	-2.4%	12	36.4%	0	0.0%	0	0.0%
*Parent functions*
Drupal\Core\Database\Connection::delete	0	N/A%	-24	-58.5%	-24	-72.7%	-144	-128.6%	-440	-34.2%
Drupal\Core\Database\Connection::merge	0	N/A%	-17	-41.5%	-16	-48.5%	0	0.0%	0	0.0%
Drupal\Core\Database\Connection::select	0	N/A%	2	4.9%	6	18.2%	0	0.0%	0	0.0%
Drupal\Core\Database\Connection::insert	0	N/A%	-1	-2.4%	-1	-3.0%	32	28.6%	1,728	134.2%
Drupal\Core\Database\Connection::update	0	N/A%	-1	-2.4%	2	6.1%	0	0.0%	0	0.0%
*Child functions*
class_exists	0	N/A%	-40	-97.6%	-43	-130.3%	-112	-100.0%	1,288	100.0%
Drupal\Core\Database\Driver\mysql\Connection::driver	0	N/A%	0	0.0%	-2	-6.1%	0	0.0%	0	0.0%