XHProf: Hierarchical Profiler Report

Diff Report: Run #51b0309e0d24b: XHProf Run (Namespace=drupal-perf-joelpittet)
vs.
Run #51b031de38383: XHProf Run (Namespace=drupal-perf-joelpittet)
Tip: Click a function name below to drill down.

Drupal\Core\Cache\DatabaseBackend::checksumTags	Run #51b0309e0d24b	Run #51b031de38383	Diff	Diff%
Number of Function Calls	86	86	0	0.0%
Incl. Wall Time (microsec)	8,902	8,197	-705	-7.9%
Incl. Wall Time (microsec) per call	104	95	-8	-7.9%
Excl. Wall Time (microsec)	1,739	1,651	-88	-5.1%
Incl. CPU (microsecs)	5,218	4,865	-353	-6.8%
Incl. CPU (microsecs) per call	61	57	-4	-6.8%
Excl. CPU (microsec)	1,445	1,372	-73	-5.1%
Incl. MemUse (bytes)	68,184	68,200	16	0.0%
Incl. MemUse (bytes) per call	793	793	0	0.0%
Excl. MemUse (bytes)	-123,280	-123,328	-48	-0.0%
Incl. PeakMemUse (bytes)	46,960	46,976	16	0.0%
Incl. PeakMemUse (bytes) per call	546	546	0	0.0%
Excl. PeakMemUse (bytes)	9,120	9,048	-72	-0.8%

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%	-705	-2.1%	-353	-1.0%	16	0.0%	16	0.0%
Exclusive Metrics Diff for Current Function			-88	-12.5%	-73	-20.7%	-48	-300.0%	-72	-450.0%
*Parent functions*
Drupal\Core\Cache\DatabaseBackend::prepareItem	0	N/A%	-583	-82.7%	-309	-87.5%	16	100.0%	16	100.0%
Drupal\Core\Cache\DatabaseBackend::prepareItem@1	0	N/A%	-122	-17.3%	-44	-12.5%	0	0.0%	0	0.0%
*Child functions*
Drupal\Core\Database\Connection::query	0	N/A%	-488	-69.2%	-133	-37.7%	0	0.0%	48	300.0%
Drupal\Core\Database\Statement::fetchAllAssoc	0	N/A%	-106	-15.0%	-107	-30.3%	0	0.0%	0	0.0%
array_keys	0	N/A%	-9	-1.3%	-14	-4.0%	64	400.0%	16	100.0%
drupal_static	0	N/A%	-8	-1.1%	-22	-6.2%	0	0.0%	0	0.0%
array_diff	0	N/A%	-6	-0.9%	2	0.6%	0	0.0%	24	150.0%
array_fill_keys	0	N/A%	0	0.0%	-6	-1.7%	0	0.0%	0	0.0%