XHProf: Hierarchical Profiler Report

Diff Report: Run #519af4b90e33b: XHProf Run (Namespace=drupal-perf-joelpittet)
vs.
Run #519af44245f83: XHProf Run (Namespace=drupal-perf-joelpittet)
Tip: Click a function name below to drill down.

Drupal\Core\Cache\DatabaseBackend::checksumTags	Run #519af4b90e33b	Run #519af44245f83	Diff	Diff%
Number of Function Calls	120	120	0	0.0%
Incl. Wall Time (microsec)	8,175	7,921	-254	-3.1%
Incl. Wall Time (microsec) per call	68	66	-2	-3.1%
Excl. Wall Time (microsec)	2,236	2,233	-3	-0.1%
Incl. CPU (microsecs)	6,069	5,933	-136	-2.2%
Incl. CPU (microsecs) per call	51	49	-1	-2.2%
Excl. CPU (microsec)	1,986	1,943	-43	-2.2%
Incl. MemUse (bytes)	83,272	83,272	0	0.0%
Incl. MemUse (bytes) per call	694	694	0	0.0%
Excl. MemUse (bytes)	-122,144	-122,120	24	0.0%
Incl. PeakMemUse (bytes)	78,952	78,928	-24	-0.0%
Incl. PeakMemUse (bytes) per call	658	658	-0	-0.0%
Excl. PeakMemUse (bytes)	24,680	24,680	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%	-254	-11.2%	-136	-7.4%	0	0.0%	-24	-0.0%
Exclusive Metrics Diff for Current Function			-3	-1.2%	-43	-31.6%	24	N/A%	0	0.0%
*Parent functions*
Drupal\Core\Cache\DatabaseBackend::prepareItem	0	N/A%	-224	-88.2%	-105	-77.2%	0	N/A%	-24	-100.0%
Drupal\Core\Cache\DatabaseBackend::prepareItem@1	0	N/A%	-30	-11.8%	-31	-22.8%	0	N/A%	0	0.0%
*Child functions*
Drupal\Core\Database\Connection::query	0	N/A%	-179	-70.5%	-41	-30.1%	0	N/A%	0	0.0%
array_keys	0	N/A%	-55	-21.7%	-33	-24.3%	-24	N/A%	-24	-100.0%
Drupal\Core\Database\Statement::fetchAllAssoc	0	N/A%	-17	-6.7%	-16	-11.8%	0	N/A%	0	0.0%
array_fill_keys	0	N/A%	-4	-1.6%	-8	-5.9%	0	N/A%	0	0.0%
array_diff	0	N/A%	3	1.2%	9	6.6%	0	N/A%	0	0.0%
drupal_static	0	N/A%	1	0.4%	-4	-2.9%	0	N/A%	0	0.0%