XHProf: Hierarchical Profiler Report

Diff Report: Run #519ea884c38e9: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #519ea91263307: XHProf Run (Namespace=drupal-perf-cottser)
Tip: Click a function name below to drill down.

Drupal\Core\Cache\DatabaseBackend::checksumTags	Run #519ea884c38e9	Run #519ea91263307	Diff	Diff%
Number of Function Calls	129	129	0	0.0%
Incl. Wall Time (microsec)	6,143	5,932	-211	-3.4%
Incl. Wall Time (microsec) per call	48	46	-2	-3.4%
Excl. Wall Time (microsec)	1,684	1,672	-12	-0.7%
Incl. CPU (microsecs)	4,183	4,198	15	0.4%
Incl. CPU (microsecs) per call	32	33	0	0.4%
Excl. CPU (microsec)	1,376	1,366	-10	-0.7%
Incl. MemUse (bytes)	83,688	83,680	-8	-0.0%
Incl. MemUse (bytes) per call	649	649	-0	-0.0%
Excl. MemUse (bytes)	-105,136	-105,136	0	0.0%
Incl. PeakMemUse (bytes)	58,152	58,144	-8	-0.0%
Incl. PeakMemUse (bytes) per call	451	451	-0	-0.0%
Excl. PeakMemUse (bytes)	9,136	9,136	0	0.0%

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%	-211	-40.0%	15	3.8%	-8	N/A%	-8	N/A%
Exclusive Metrics Diff for Current Function			-12	-5.7%	-10	-66.7%	0	0.0%	0	0.0%
*Parent functions*
Drupal\Core\Cache\DatabaseBackend::prepareItem	0	N/A%	-231	-109.5%	-20	-133.3%	-8	-100.0%	-8	-100.0%
Drupal\Core\Cache\DatabaseBackend::prepareItem@1	0	N/A%	20	9.5%	35	233.3%	0	0.0%	0	0.0%
*Child functions*
Drupal\Core\Database\Connection::query	0	N/A%	-217	-102.8%	14	93.3%	0	0.0%	0	0.0%
drupal_static	0	N/A%	19	9.0%	7	46.7%	0	0.0%	0	0.0%
array_keys	0	N/A%	14	6.6%	26	173.3%	0	0.0%	0	0.0%
Drupal\Core\Database\Statement::fetchAllAssoc	0	N/A%	-13	-6.2%	-16	-106.7%	-8	-100.0%	-8	-100.0%
array_diff	0	N/A%	-2	-0.9%	-3	-20.0%	0	0.0%	0	0.0%
array_fill_keys	0	N/A%	0	0.0%	-3	-20.0%	0	0.0%	0	0.0%