XHProf: Hierarchical Profiler Report

Diff Report: Run #517d51ae434de: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #517d52998923d: XHProf Run (Namespace=drupal-perf-cottser)
Tip: Click a function name below to drill down.

Drupal\Core\Cache\DatabaseBackend::checksumTags	Run #517d51ae434de	Run #517d52998923d	Diff	Diff%
Number of Function Calls	65	65	0	0.0%
Incl. Wall Time (microsec)	4,971	5,115	144	2.9%
Incl. Wall Time (microsec) per call	76	79	2	2.9%
Excl. Wall Time (microsec)	1,013	1,028	15	1.5%
Incl. CPU (microsecs)	3,246	3,252	6	0.2%
Incl. CPU (microsecs) per call	50	50	0	0.2%
Excl. CPU (microsec)	842	839	-3	-0.4%
Incl. MemUse (bytes)	52,472	52,440	-32	-0.1%
Incl. MemUse (bytes) per call	807	807	-0	-0.1%
Excl. MemUse (bytes)	-87,616	-87,240	376	0.4%
Incl. PeakMemUse (bytes)	82,416	83,040	624	0.8%
Incl. PeakMemUse (bytes) per call	1,268	1,278	10	0.8%
Excl. PeakMemUse (bytes)	14,256	13,928	-328	-2.3%

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%	144	4.3%	6	0.2%	-32	-0.5%	624	9.3%
Exclusive Metrics Diff for Current Function			15	10.4%	-3	-50.0%	376	1175.0%	-328	-52.6%
*Parent functions*
Drupal\Core\Cache\DatabaseBackend::prepareItem	0	N/A%	136	94.4%	-1	-16.7%	-32	-100.0%	624	100.0%
Drupal\Core\Cache\DatabaseBackend::prepareItem@1	0	N/A%	8	5.6%	7	116.7%	0	0.0%	0	0.0%
*Child functions*
Drupal\Core\Database\Connection::query	0	N/A%	146	101.4%	11	183.3%	16	50.0%	880	141.0%
drupal_static	0	N/A%	-8	-5.6%	-4	-66.7%	0	0.0%	0	0.0%
Drupal\Core\Database\Statement::fetchAllAssoc	0	N/A%	-6	-4.2%	-7	-116.7%	-8	-25.0%	-8	-1.3%
array_diff	0	N/A%	-3	-2.1%	2	33.3%	0	0.0%	96	15.4%
array_fill_keys	0	N/A%	0	0.0%	0	0.0%	0	0.0%	0	0.0%
array_keys	0	N/A%	0	0.0%	7	116.7%	-416	-1300.0%	-16	-2.6%