XHProf: Hierarchical Profiler Report

Diff Report: Run #51a0ef63cb19e: XHProf Run (Namespace=drupal-perf-ezeedub)
vs.
Run #51a0f086f2681: XHProf Run (Namespace=drupal-perf-ezeedub)
Tip: Click a function name below to drill down.

Drupal\Core\Cache\DatabaseBackend::checksumTags	Run #51a0ef63cb19e	Run #51a0f086f2681	Diff	Diff%
Number of Function Calls	97	98	1	1.0%
Incl. Wall Time (microsec)	6,895	6,920	25	0.4%
Incl. Wall Time (microsec) per call	71	71	-0	-0.7%
Excl. Wall Time (microsec)	2,356	2,395	39	1.7%
Incl. CPU (microsecs)	8,000	16,002	8,002	100.0%
Incl. CPU (microsecs) per call	82	163	81	98.0%
Excl. CPU (microsec)	0	8,001	8,001	N/A%
Incl. MemUse (bytes)	36,732	36,992	260	0.7%
Incl. MemUse (bytes) per call	379	377	-1	-0.3%
Excl. MemUse (bytes)	-55,860	-56,848	-988	-1.8%
Incl. PeakMemUse (bytes)	45,484	46,272	788	1.7%
Incl. PeakMemUse (bytes) per call	469	472	3	0.7%
Excl. PeakMemUse (bytes)	8,032	8,188	156	1.9%

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	1	25.0%	25	0.7%	8,002	100.0%	260	1.5%	788	3.9%
Exclusive Metrics Diff for Current Function			39	156.0%	8,001	100.0%	-988	-380.0%	156	19.8%
*Parent functions*
Drupal\Core\Cache\DatabaseBackend::prepareItem	1	100.0%	21	84.0%	8,002	100.0%	260	100.0%	788	100.0%
Drupal\Core\Cache\DatabaseBackend::prepareItem@1	0	0.0%	4	16.0%	0	0.0%	0	0.0%	0	0.0%
*Child functions*
Drupal\Core\Database\Connection::query	0	0.0%	20	80.0%	1	0.0%	0	0.0%	-68	-8.6%
drupal_static	1	33.3%	-19	-76.0%	0	0.0%	0	0.0%	0	0.0%
array_diff	1	33.3%	-17	-68.0%	0	0.0%	48	18.5%	44	5.6%
array_keys	1	33.3%	3	12.0%	0	0.0%	1,200	461.5%	656	83.2%
Drupal\Core\Database\Statement::fetchAllAssoc	0	0.0%	-2	-8.0%	0	0.0%	0	0.0%	0	0.0%
array_fill_keys	0	0.0%	1	4.0%	0	0.0%	0	0.0%	0	0.0%