XHProf: Hierarchical Profiler Report

Diff Report: Run #519ea984d991e: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #519ea884c38e9: XHProf Run (Namespace=drupal-perf-cottser)
Tip: Click a function name below to drill down.

Drupal\Core\Cache\DatabaseBackend::checksumTags	Run #519ea984d991e	Run #519ea884c38e9	Diff	Diff%
Number of Function Calls	129	129	0	0.0%
Incl. Wall Time (microsec)	6,015	6,143	128	2.1%
Incl. Wall Time (microsec) per call	47	48	1	2.1%
Excl. Wall Time (microsec)	1,726	1,684	-42	-2.4%
Incl. CPU (microsecs)	4,235	4,183	-52	-1.2%
Incl. CPU (microsecs) per call	33	32	-0	-1.2%
Excl. CPU (microsec)	1,415	1,376	-39	-2.8%
Incl. MemUse (bytes)	83,672	83,688	16	0.0%
Incl. MemUse (bytes) per call	649	649	0	0.0%
Excl. MemUse (bytes)	-105,152	-105,136	16	0.0%
Incl. PeakMemUse (bytes)	58,000	58,152	152	0.3%
Incl. PeakMemUse (bytes) per call	450	451	1	0.3%
Excl. PeakMemUse (bytes)	8,976	9,136	160	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%	128	0.4%	-52	-0.2%	16	0.0%	152	0.3%
Exclusive Metrics Diff for Current Function			-42	-32.8%	-39	-75.0%	16	100.0%	160	105.3%
*Parent functions*
Drupal\Core\Cache\DatabaseBackend::prepareItem	0	N/A%	123	96.1%	-37	-71.2%	16	100.0%	152	100.0%
Drupal\Core\Cache\DatabaseBackend::prepareItem@1	0	N/A%	5	3.9%	-15	-28.8%	0	0.0%	0	0.0%
*Child functions*
Drupal\Core\Database\Connection::query	0	N/A%	181	141.4%	-17	-32.7%	-16	-100.0%	-16	-10.5%
drupal_static	0	N/A%	-11	-8.6%	4	7.7%	0	0.0%	0	0.0%
Drupal\Core\Database\Statement::fetchAllAssoc	0	N/A%	-7	-5.5%	-6	-11.5%	16	100.0%	8	5.3%
array_diff	0	N/A%	5	3.9%	2	3.8%	0	0.0%	0	0.0%
array_keys	0	N/A%	2	1.6%	1	1.9%	0	0.0%	0	0.0%
array_fill_keys	0	N/A%	0	0.0%	3	5.8%	0	0.0%	0	0.0%