XHProf: Hierarchical Profiler Report

Diff Report: Run #517d525cbaeb1: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #517d51ae434de: XHProf Run (Namespace=drupal-perf-cottser)
Tip: Click a function name below to drill down.

Drupal\Core\Cache\DatabaseBackend::checksumTags	Run #517d525cbaeb1	Run #517d51ae434de	Diff	Diff%
Number of Function Calls	65	65	0	0.0%
Incl. Wall Time (microsec)	4,966	4,971	5	0.1%
Incl. Wall Time (microsec) per call	76	76	0	0.1%
Excl. Wall Time (microsec)	1,013	1,013	0	0.0%
Incl. CPU (microsecs)	3,229	3,246	17	0.5%
Incl. CPU (microsecs) per call	50	50	0	0.5%
Excl. CPU (microsec)	834	842	8	1.0%
Incl. MemUse (bytes)	52,440	52,472	32	0.1%
Incl. MemUse (bytes) per call	807	807	0	0.1%
Excl. MemUse (bytes)	-87,208	-87,616	-408	-0.5%
Incl. PeakMemUse (bytes)	82,696	82,416	-280	-0.3%
Incl. PeakMemUse (bytes) per call	1,272	1,268	-4	-0.3%
Excl. PeakMemUse (bytes)	14,008	14,256	248	1.8%

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%	5	0.1%	17	0.3%	32	0.5%	-280	-4.6%
Exclusive Metrics Diff for Current Function			0	0.0%	8	47.1%	-408	-1275.0%	248	88.6%
*Parent functions*
Drupal\Core\Cache\DatabaseBackend::prepareItem	0	N/A%	22	440.0%	33	194.1%	32	100.0%	-280	-100.0%
Drupal\Core\Cache\DatabaseBackend::prepareItem@1	0	N/A%	-17	-340.0%	-16	-94.1%	0	0.0%	0	0.0%
*Child functions*
Drupal\Core\Database\Statement::fetchAllAssoc	0	N/A%	16	320.0%	25	147.1%	8	25.0%	8	2.9%
Drupal\Core\Database\Connection::query	0	N/A%	-16	-320.0%	-16	-94.1%	8	25.0%	-440	-157.1%
drupal_static	0	N/A%	4	80.0%	9	52.9%	0	0.0%	-24	-8.6%
array_keys	0	N/A%	1	20.0%	-8	-47.1%	424	1325.0%	24	8.6%
array_fill_keys	0	N/A%	0	0.0%	5	29.4%	0	0.0%	0	0.0%
array_diff	0	N/A%	0	0.0%	-6	-35.3%	0	0.0%	-96	-34.3%