XHProf: Hierarchical Profiler Report

Diff Report: Run #51f5bb078e5a7: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #51f5bbaa8fc1d: XHProf Run (Namespace=drupal-perf-cottser)
Tip: Click a function name below to drill down.

Drupal\Core\Cache\DatabaseBackend::checksumTags	Run #51f5bb078e5a7	Run #51f5bbaa8fc1d	Diff	Diff%
Number of Function Calls	115	115	0	0.0%
Incl. Wall Time (microsec)	5,786	6,250	464	8.0%
Incl. Wall Time (microsec) per call	50	54	4	8.0%
Excl. Wall Time (microsec)	1,627	1,703	76	4.7%
Incl. CPU (microsecs)	4,166	4,307	141	3.4%
Incl. CPU (microsecs) per call	36	37	1	3.4%
Excl. CPU (microsec)	1,344	1,430	86	6.4%
Incl. MemUse (bytes)	77,712	77,736	24	0.0%
Incl. MemUse (bytes) per call	676	676	0	0.0%
Excl. MemUse (bytes)	-125,280	-125,216	64	0.1%
Incl. PeakMemUse (bytes)	110,712	109,272	-1,440	-1.3%
Incl. PeakMemUse (bytes) per call	963	950	-13	-1.3%
Excl. PeakMemUse (bytes)	24,048	23,960	-88	-0.4%

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%	464	10.1%	141	3.3%	24	0.0%	-1,440	-2.5%
Exclusive Metrics Diff for Current Function			76	16.4%	86	61.0%	64	266.7%	-88	-6.1%
*Parent functions*
Drupal\Core\Cache\DatabaseBackend::prepareItem	0	N/A%	418	90.1%	140	99.3%	24	100.0%	-1,440	-100.0%
Drupal\Core\Cache\DatabaseBackend::prepareItem@1	0	N/A%	46	9.9%	1	0.7%	0	0.0%	0	0.0%
Drupal\Core\Cache\DatabaseBackend::doSet	0	N/A%	0	0.0%	0	0.0%	0	0.0%	0	0.0%
*Child functions*
Drupal\Core\Database\Connection::query	0	N/A%	343	73.9%	12	8.5%	-16	-66.7%	-80	-5.6%
array_keys	0	N/A%	25	5.4%	18	12.8%	-48	-200.0%	-1,000	-69.4%
Drupal\Core\Database\Statement::fetchAllAssoc	0	N/A%	24	5.2%	23	16.3%	24	100.0%	24	1.7%
drupal_static	0	N/A%	-3	-0.6%	13	9.2%	0	0.0%	-40	-2.8%
array_diff	0	N/A%	-1	-0.2%	-10	-7.1%	0	0.0%	-256	-17.8%
array_fill_keys	0	N/A%	0	0.0%	-1	-0.7%	0	0.0%	0	0.0%