XHProf: Hierarchical Profiler Report

Diff Report: Run #519bd405e5fe3: XHProf Run (Namespace=drupal-perf-joelpittet)
vs.
Run #519bd4feea4c7: XHProf Run (Namespace=drupal-perf-joelpittet)
Tip: Click a function name below to drill down.

Drupal\Core\Cache\DatabaseBackend::checksumTags	Run #519bd405e5fe3	Run #519bd4feea4c7	Diff	Diff%
Number of Function Calls	147	147	0	0.0%
Incl. Wall Time (microsec)	8,736	8,584	-152	-1.7%
Incl. Wall Time (microsec) per call	59	58	-1	-1.7%
Excl. Wall Time (microsec)	2,507	2,529	22	0.9%
Incl. CPU (microsecs)	6,526	6,424	-102	-1.6%
Incl. CPU (microsecs) per call	44	44	-1	-1.6%
Excl. CPU (microsec)	2,196	2,103	-93	-4.2%
Incl. MemUse (bytes)	96,136	96,136	0	0.0%
Incl. MemUse (bytes) per call	654	654	0	0.0%
Excl. MemUse (bytes)	-102,400	-102,408	-8	-0.0%
Incl. PeakMemUse (bytes)	62,480	62,608	128	0.2%
Incl. PeakMemUse (bytes) per call	425	426	1	0.2%
Excl. PeakMemUse (bytes)	16,416	16,488	72	0.4%

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%	-152	-2.6%	-102	-1.5%	0	0.0%	128	0.6%
Exclusive Metrics Diff for Current Function			22	14.5%	-93	-91.2%	-8	N/A%	72	56.2%
*Parent functions*
Drupal\Core\Cache\DatabaseBackend::prepareItem	0	N/A%	-154	-101.3%	-106	-103.9%	0	N/A%	128	100.0%
Drupal\Core\Cache\DatabaseBackend::prepareItem@1	0	N/A%	2	1.3%	4	3.9%	0	N/A%	0	0.0%
*Child functions*
Drupal\Core\Database\Connection::query	0	N/A%	-138	-90.8%	-53	-52.0%	0	N/A%	0	0.0%
drupal_static	0	N/A%	-26	-17.1%	0	0.0%	0	N/A%	0	0.0%
Drupal\Core\Database\Statement::fetchAllAssoc	0	N/A%	-20	-13.2%	-18	-17.6%	0	N/A%	0	0.0%
array_keys	0	N/A%	19	12.5%	50	49.0%	8	N/A%	48	37.5%
array_diff	0	N/A%	-6	-3.9%	18	17.6%	0	N/A%	8	6.2%
array_fill_keys	0	N/A%	-3	-2.0%	-6	-5.9%	0	N/A%	0	0.0%