XHProf: Hierarchical Profiler Report

Diff Report: Run #519b0e62696b0: XHProf Run (Namespace=drupal-perf-jenlampton)
vs.
Run #519b12bb10362: XHProf Run (Namespace=drupal-perf-jenlampton)
Tip: Click a function name below to drill down.

Drupal\Core\Cache\DatabaseBackend::checksumTags	Run #519b0e62696b0	Run #519b12bb10362	Diff	Diff%
Number of Function Calls	96	96	0	0.0%
Incl. Wall Time (microsec)	6,477	6,589	112	1.7%
Incl. Wall Time (microsec) per call	67	69	1	1.7%
Excl. Wall Time (microsec)	2,305	2,308	3	0.1%
Incl. CPU (microsecs)	6,026	5,986	-40	-0.7%
Incl. CPU (microsecs) per call	63	62	-0	-0.7%
Excl. CPU (microsec)	2,001	2,007	6	0.3%
Incl. MemUse (bytes)	70,672	70,672	0	0.0%
Incl. MemUse (bytes) per call	736	736	0	0.0%
Excl. MemUse (bytes)	-87,504	-87,512	-8	-0.0%
Incl. PeakMemUse (bytes)	75,880	74,392	-1,488	-2.0%
Incl. PeakMemUse (bytes) per call	790	775	-16	-2.0%
Excl. PeakMemUse (bytes)	20,696	20,776	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%	112	5.4%	-40	-1.9%	0	0.0%	-1,488	-1.6%
Exclusive Metrics Diff for Current Function			3	2.7%	6	15.0%	-8	N/A%	80	5.4%
*Parent functions*
Drupal\Core\Cache\DatabaseBackend::prepareItem	0	N/A%	91	81.2%	-60	-150.0%	0	N/A%	-2,720	-182.8%
Drupal\Core\Cache\DatabaseBackend::prepareItem@1	0	N/A%	21	18.8%	20	50.0%	0	N/A%	1,232	82.8%
*Child functions*
Drupal\Core\Database\Connection::query	0	N/A%	102	91.1%	-35	-87.5%	8	N/A%	-1,776	-119.4%
array_keys	0	N/A%	18	16.1%	10	25.0%	0	N/A%	528	35.5%
Drupal\Core\Database\Statement::fetchAllAssoc	0	N/A%	-6	-5.4%	-1	-2.5%	0	N/A%	-304	-20.4%
array_diff	0	N/A%	-4	-3.6%	-3	-7.5%	0	N/A%	-16	-1.1%
drupal_static	0	N/A%	-1	-0.9%	-17	-42.5%	0	N/A%	0	0.0%
array_fill_keys	0	N/A%	0	0.0%	0	0.0%	0	N/A%	0	0.0%