XHProf: Hierarchical Profiler Report

Diff Report: Run #51774c26bf054: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #51774d289642f: XHProf Run (Namespace=drupal-perf-cottser)
Tip: Click a function name below to drill down.

Drupal\Core\Cache\DatabaseBackend::checksumTags	Run #51774c26bf054	Run #51774d289642f	Diff	Diff%
Number of Function Calls	135	135	0	0.0%
Incl. Wall Time (microsec)	6,342	6,292	-50	-0.8%
Incl. Wall Time (microsec) per call	47	47	-0	-0.8%
Excl. Wall Time (microsec)	1,772	1,792	20	1.1%
Incl. CPU (microsecs)	4,538	4,467	-71	-1.6%
Incl. CPU (microsecs) per call	34	33	-1	-1.6%
Excl. CPU (microsec)	1,461	1,525	64	4.4%
Incl. MemUse (bytes)	86,640	86,640	0	0.0%
Incl. MemUse (bytes) per call	642	642	0	0.0%
Excl. MemUse (bytes)	-166,800	-166,816	-16	-0.0%
Incl. PeakMemUse (bytes)	91,672	91,632	-40	-0.0%
Incl. PeakMemUse (bytes) per call	679	679	-0	-0.0%
Excl. PeakMemUse (bytes)	20,120	20,080	-40	-0.2%

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%	-50	-0.1%	-71	-0.2%	0	0.0%	-40	-0.2%
Exclusive Metrics Diff for Current Function			20	40.0%	64	90.1%	-16	N/A%	-40	-100.0%
*Parent functions*
Drupal\Core\Cache\DatabaseBackend::prepareItem	0	N/A%	-62	-124.0%	-84	-118.3%	0	N/A%	-40	-100.0%
Drupal\Core\Cache\DatabaseBackend::prepareItem@1	0	N/A%	12	24.0%	13	18.3%	0	N/A%	0	0.0%
*Child functions*
array_keys	0	N/A%	-64	-128.0%	-80	-112.7%	0	N/A%	0	0.0%
Drupal\Core\Database\Statement::fetchAllAssoc	0	N/A%	-23	-46.0%	-22	-31.0%	0	N/A%	0	0.0%
array_diff	0	N/A%	10	20.0%	-4	-5.6%	0	N/A%	0	0.0%
drupal_static	0	N/A%	10	20.0%	-9	-12.7%	0	N/A%	0	0.0%
Drupal\Core\Database\Connection::query	0	N/A%	-3	-6.0%	-19	-26.8%	16	N/A%	0	0.0%
array_fill_keys	0	N/A%	0	0.0%	-1	-1.4%	0	N/A%	0	0.0%