XHProf: Hierarchical Profiler Report

Diff Report: Run #519b1a785aaa6: XHProf Run (Namespace=drupal-perf-jenlampton)
vs.
Run #519b1557bbc04: XHProf Run (Namespace=drupal-perf-jenlampton)
Tip: Click a function name below to drill down.

Drupal\Core\Cache\DatabaseBackend::checksumTags	Run #519b1a785aaa6	Run #519b1557bbc04	Diff	Diff%
Number of Function Calls	99	99	0	0.0%
Incl. Wall Time (microsec)	6,839	6,675	-164	-2.4%
Incl. Wall Time (microsec) per call	69	67	-2	-2.4%
Excl. Wall Time (microsec)	2,421	2,361	-60	-2.5%
Incl. CPU (microsecs)	6,285	6,174	-111	-1.8%
Incl. CPU (microsecs) per call	63	62	-1	-1.8%
Excl. CPU (microsec)	2,105	2,054	-51	-2.4%
Incl. MemUse (bytes)	72,232	72,232	0	0.0%
Incl. MemUse (bytes) per call	730	730	0	0.0%
Excl. MemUse (bytes)	-106,424	-106,456	-32	-0.0%
Incl. PeakMemUse (bytes)	79,480	79,560	80	0.1%
Incl. PeakMemUse (bytes) per call	803	804	1	0.1%
Excl. PeakMemUse (bytes)	22,616	22,696	80	0.4%

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%	-164	-8.2%	-111	-5.1%	0	0.0%	80	0.5%
Exclusive Metrics Diff for Current Function			-60	-36.6%	-51	-45.9%	-32	N/A%	80	100.0%
*Parent functions*
Drupal\Core\Cache\DatabaseBackend::prepareItem	0	N/A%	-165	-100.6%	-101	-91.0%	0	N/A%	80	100.0%
Drupal\Core\Cache\DatabaseBackend::prepareItem@1	0	N/A%	1	0.6%	-10	-9.0%	0	N/A%	0	0.0%
*Child functions*
Drupal\Core\Database\Connection::query	0	N/A%	-82	-50.0%	-37	-33.3%	0	N/A%	-48	-60.0%
drupal_static	0	N/A%	-17	-10.4%	-14	-12.6%	0	N/A%	0	0.0%
Drupal\Core\Database\Statement::fetchAllAssoc	0	N/A%	-13	-7.9%	-16	-14.4%	0	N/A%	0	0.0%
array_diff	0	N/A%	11	6.7%	8	7.2%	0	N/A%	32	40.0%
array_keys	0	N/A%	-3	-1.8%	1	0.9%	32	N/A%	16	20.0%
array_fill_keys	0	N/A%	0	0.0%	-2	-1.8%	0	N/A%	0	0.0%