XHProf: Hierarchical Profiler Report

Diff Report: Run #51b89ec98250c: XHProf Run (Namespace=drupal-perf-joelpittet)
vs.
Run #51b89dd280f98: XHProf Run (Namespace=drupal-perf-joelpittet)
Tip: Click a function name below to drill down.

Drupal\Core\Cache\DatabaseBackend::checksumTags	Run #51b89ec98250c	Run #51b89dd280f98	Diff	Diff%
Number of Function Calls	80	80	0	0.0%
Incl. Wall Time (microsec)	9,012	9,584	572	6.3%
Incl. Wall Time (microsec) per call	113	120	7	6.3%
Excl. Wall Time (microsec)	1,761	1,759	-2	-0.1%
Incl. CPU (microsecs)	5,673	5,963	290	5.1%
Incl. CPU (microsecs) per call	71	75	4	5.1%
Excl. CPU (microsec)	1,493	1,523	30	2.0%
Incl. MemUse (bytes)	61,528	61,504	-24	-0.0%
Incl. MemUse (bytes) per call	769	769	-0	-0.0%
Excl. MemUse (bytes)	-107,888	-107,832	56	0.1%
Incl. PeakMemUse (bytes)	50,560	50,440	-120	-0.2%
Incl. PeakMemUse (bytes) per call	632	631	-2	-0.2%
Excl. PeakMemUse (bytes)	7,952	7,952	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%	572	4.1%	290	2.0%	-24	-0.0%	-120	-0.2%
Exclusive Metrics Diff for Current Function			-2	-0.3%	30	10.3%	56	233.3%	0	0.0%
*Parent functions*
Drupal\Core\Cache\DatabaseBackend::prepareItem	0	N/A%	353	61.7%	158	54.5%	-24	-100.0%	-120	-100.0%
Drupal\Core\Cache\DatabaseBackend::prepareItem@1	0	N/A%	219	38.3%	132	45.5%	0	0.0%	0	0.0%
*Child functions*
Drupal\Core\Database\Connection::query	0	N/A%	501	87.6%	214	73.8%	-48	-200.0%	-32	-26.7%
Drupal\Core\Database\Statement::fetchAllAssoc	0	N/A%	71	12.4%	62	21.4%	-24	-100.0%	-24	-20.0%
drupal_static	0	N/A%	19	3.3%	11	3.8%	0	0.0%	0	0.0%
array_diff	0	N/A%	-13	-2.3%	-16	-5.5%	0	0.0%	0	0.0%
array_fill_keys	0	N/A%	-6	-1.0%	-5	-1.7%	0	0.0%	0	0.0%
array_keys	0	N/A%	2	0.3%	-6	-2.1%	-8	-33.3%	-64	-53.3%