XHProf: Hierarchical Profiler Report

Diff Report: Run #51a5545d76a23: XHProf Run (Namespace=drupal-perf-ezeedub)
vs.
Run #51a562cdc3626: XHProf Run (Namespace=drupal-perf-ezeedub)
Tip: Click a function name below to drill down.

Drupal\Core\Cache\DatabaseBackend::checksumTags	Run #51a5545d76a23	Run #51a562cdc3626	Diff	Diff%
Number of Function Calls	123	123	0	0.0%
Incl. Wall Time (microsec)	8,359	8,308	-51	-0.6%
Incl. Wall Time (microsec) per call	68	68	-0	-0.6%
Excl. Wall Time (microsec)	2,872	2,810	-62	-2.2%
Incl. CPU (microsecs)	0	20,000	20,000	N/A%
Incl. CPU (microsecs) per call	0	163	163	N/A%
Excl. CPU (microsec)	0	8,000	8,000	N/A%
Incl. MemUse (bytes)	43,248	43,256	8	0.0%
Incl. MemUse (bytes) per call	352	352	0	0.0%
Excl. MemUse (bytes)	-59,680	-59,716	-36	-0.1%
Incl. PeakMemUse (bytes)	42,504	42,760	256	0.6%
Incl. PeakMemUse (bytes) per call	346	348	2	0.6%
Excl. PeakMemUse (bytes)	7,472	7,628	156	2.1%

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%	-51	-0.3%	20,000	100.0%	8	0.0%	256	0.4%
Exclusive Metrics Diff for Current Function			-62	-121.6%	8,000	40.0%	-36	-450.0%	156	60.9%
*Parent functions*
Drupal\Core\Cache\DatabaseBackend::prepareItem	0	N/A%	-53	-103.9%	16,000	80.0%	8	100.0%	256	100.0%
Drupal\Core\Cache\DatabaseBackend::prepareItem@1	0	N/A%	2	3.9%	4,000	20.0%	0	0.0%	0	0.0%
*Child functions*
Drupal\Core\Database\Connection::query	0	N/A%	96	188.2%	8,000	40.0%	0	0.0%	20	7.8%
drupal_static	0	N/A%	-66	-129.4%	4,000	20.0%	0	0.0%	0	0.0%
array_keys	0	N/A%	-8	-15.7%	0	0.0%	36	450.0%	16	6.2%
Drupal\Core\Database\Statement::fetchAllAssoc	0	N/A%	-6	-11.8%	0	0.0%	8	100.0%	24	9.4%
array_diff	0	N/A%	-3	-5.9%	0	0.0%	0	0.0%	40	15.6%
array_fill_keys	0	N/A%	-2	-3.9%	0	0.0%	0	0.0%	0	0.0%