XHProf: Hierarchical Profiler Report

Diff Report: Run #51ad02c47d041: XHProf Run (Namespace=drupal-perf-joelpittet)
vs.
Run #51ad024086f90: XHProf Run (Namespace=drupal-perf-joelpittet)
Tip: Click a function name below to drill down.

Drupal\Core\Cache\DatabaseBackend::checksumTags	Run #51ad02c47d041	Run #51ad024086f90	Diff	Diff%
Number of Function Calls	78	78	0	0.0%
Incl. Wall Time (microsec)	6,293	6,039	-254	-4.0%
Incl. Wall Time (microsec) per call	81	77	-3	-4.0%
Excl. Wall Time (microsec)	1,471	1,451	-20	-1.4%
Incl. CPU (microsecs)	4,018	4,062	44	1.1%
Incl. CPU (microsecs) per call	52	52	1	1.1%
Excl. CPU (microsec)	1,181	1,180	-1	-0.1%
Incl. MemUse (bytes)	67,240	67,240	0	0.0%
Incl. MemUse (bytes) per call	862	862	0	0.0%
Excl. MemUse (bytes)	-103,176	-103,176	0	0.0%
Incl. PeakMemUse (bytes)	87,600	87,408	-192	-0.2%
Incl. PeakMemUse (bytes) per call	1,123	1,121	-2	-0.2%
Excl. PeakMemUse (bytes)	18,880	18,720	-160	-0.8%

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\Cache\DatabaseBackend::checksumTags	0	N/A%	-254	-5.8%	44	1.4%	0	0.0%	-192	-0.1%
Exclusive Metrics Diff for Current Function			-20	-7.9%	-1	-2.3%	0	N/A%	-160	-83.3%
*Parent functions*
Drupal\Core\Cache\DatabaseBackend::prepareItem	0	N/A%	-181	-71.3%	31	70.5%	0	N/A%	-120	-62.5%
Drupal\Core\Cache\DatabaseBackend::prepareItem@1	0	N/A%	-73	-28.7%	13	29.5%	0	N/A%	-72	-37.5%
*Child functions*
Drupal\Core\Database\Connection::query	0	N/A%	-267	-105.1%	18	40.9%	0	N/A%	-16	-8.3%
array_keys	0	N/A%	18	7.1%	22	50.0%	0	N/A%	0	0.0%
drupal_static	0	N/A%	17	6.7%	13	29.5%	0	N/A%	-16	-8.3%
Drupal\Core\Database\Statement::fetchAllAssoc	0	N/A%	-11	-4.3%	-9	-20.5%	0	N/A%	0	0.0%
array_diff	0	N/A%	8	3.1%	3	6.8%	0	N/A%	0	0.0%
array_fill_keys	0	N/A%	1	0.4%	-2	-4.5%	0	N/A%	0	0.0%