XHProf: Hierarchical Profiler Report

Diff Report: Run #5192e6f7bc551: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #5192e86ee04ad: XHProf Run (Namespace=drupal-perf-cottser)
Tip: Click a function name below to drill down.

Drupal\Core\Cache\DatabaseBackend::checksumTags	Run #5192e6f7bc551	Run #5192e86ee04ad	Diff	Diff%
Number of Function Calls	77	77	0	0.0%
Incl. Wall Time (microsec)	5,731	5,343	-388	-6.8%
Incl. Wall Time (microsec) per call	74	69	-5	-6.8%
Excl. Wall Time (microsec)	1,323	1,255	-68	-5.1%
Incl. CPU (microsecs)	3,850	3,666	-184	-4.8%
Incl. CPU (microsecs) per call	50	48	-2	-4.8%
Excl. CPU (microsec)	1,110	1,097	-13	-1.2%
Incl. MemUse (bytes)	58,312	58,312	0	0.0%
Incl. MemUse (bytes) per call	757	757	0	0.0%
Excl. MemUse (bytes)	-102,432	-102,432	0	0.0%
Incl. PeakMemUse (bytes)	107,048	107,048	0	0.0%
Incl. PeakMemUse (bytes) per call	1,390	1,390	0	0.0%
Excl. PeakMemUse (bytes)	17,216	17,216	0	0.0%

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%	-388	-166.5%	-184	-12.9%	0	N/A%	0	N/A%
Exclusive Metrics Diff for Current Function			-68	-17.5%	-13	-7.1%	0	N/A%	0	N/A%
*Parent functions*
Drupal\Core\Cache\DatabaseBackend::prepareItem	0	N/A%	-418	-107.7%	-223	-121.2%	0	N/A%	0	N/A%
Drupal\Core\Cache\DatabaseBackend::prepareItem@1	0	N/A%	30	7.7%	39	21.2%	0	N/A%	0	N/A%
*Child functions*
Drupal\Core\Database\Connection::query	0	N/A%	-302	-77.8%	-113	-61.4%	0	N/A%	0	N/A%
array_diff	0	N/A%	28	7.2%	16	8.7%	0	N/A%	0	N/A%
Drupal\Core\Database\Statement::fetchAllAssoc	0	N/A%	-23	-5.9%	-29	-15.8%	0	N/A%	0	N/A%
drupal_static	0	N/A%	-16	-4.1%	-25	-13.6%	0	N/A%	0	N/A%
array_keys	0	N/A%	-5	-1.3%	-14	-7.6%	0	N/A%	0	N/A%
array_fill_keys	0	N/A%	-2	-0.5%	-6	-3.3%	0	N/A%	0	N/A%