XHProf: Hierarchical Profiler Report

Diff Report: Run #51a5000df000f: XHProf Run (Namespace=drupal-perf-ezeedub)
vs.
Run #51a4f50036185: XHProf Run (Namespace=drupal-perf-ezeedub)
Tip: Click a function name below to drill down.

Drupal\Core\Cache\DatabaseBackend::checksumTags	Run #51a5000df000f	Run #51a4f50036185	Diff	Diff%
Number of Function Calls	77	77	0	0.0%
Incl. Wall Time (microsec)	6,350	6,567	217	3.4%
Incl. Wall Time (microsec) per call	82	85	3	3.4%
Excl. Wall Time (microsec)	1,801	1,921	120	6.7%
Incl. CPU (microsecs)	4,000	0	-4,000	-100.0%
Incl. CPU (microsecs) per call	52	0	-52	-100.0%
Excl. CPU (microsec)	0	0	0	N/A%
Incl. MemUse (bytes)	31,296	31,296	0	0.0%
Incl. MemUse (bytes) per call	406	406	0	0.0%
Excl. MemUse (bytes)	-40,964	-40,960	4	0.0%
Incl. PeakMemUse (bytes)	34,272	34,220	-52	-0.2%
Incl. PeakMemUse (bytes) per call	445	444	-1	-0.2%
Excl. PeakMemUse (bytes)	3,996	4,068	72	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%	217	4.7%	-4,000	-100.0%	0	0.0%	-52	-0.2%
Exclusive Metrics Diff for Current Function			120	55.3%	0	0.0%	4	N/A%	72	138.5%
*Parent functions*
Drupal\Core\Cache\DatabaseBackend::prepareItem	0	N/A%	209	96.3%	-4,000	-100.0%	0	N/A%	-28	-53.8%
Drupal\Core\Cache\DatabaseBackend::prepareItem@1	0	N/A%	8	3.7%	0	0.0%	0	N/A%	-24	-46.2%
*Child functions*
drupal_static	0	N/A%	76	35.0%	0	0.0%	0	N/A%	0	0.0%
Drupal\Core\Database\Connection::query	0	N/A%	-72	-33.2%	-4,000	-100.0%	0	N/A%	32	61.5%
array_diff	0	N/A%	56	25.8%	0	0.0%	-4	N/A%	-84	-161.5%
Drupal\Core\Database\Statement::fetchAllAssoc	0	N/A%	23	10.6%	0	0.0%	0	N/A%	-16	-30.8%
array_keys	0	N/A%	13	6.0%	0	0.0%	0	N/A%	-56	-107.7%
array_fill_keys	0	N/A%	1	0.5%	0	0.0%	0	N/A%	0	0.0%