XHProf: Hierarchical Profiler Report

Diff Report: Run #517d73f55c548: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #517d7319aefb8: XHProf Run (Namespace=drupal-perf-cottser)
Tip: Click a function name below to drill down.

Drupal\Core\Cache\DatabaseBackend::checksumTags	Run #517d73f55c548	Run #517d7319aefb8	Diff	Diff%
Number of Function Calls	65	65	0	0.0%
Incl. Wall Time (microsec)	5,128	4,844	-284	-5.5%
Incl. Wall Time (microsec) per call	79	75	-4	-5.5%
Excl. Wall Time (microsec)	1,000	998	-2	-0.2%
Incl. CPU (microsecs)	3,198	3,117	-81	-2.5%
Incl. CPU (microsecs) per call	49	48	-1	-2.5%
Excl. CPU (microsec)	811	838	27	3.3%
Incl. MemUse (bytes)	52,440	52,464	24	0.0%
Incl. MemUse (bytes) per call	807	807	0	0.0%
Excl. MemUse (bytes)	-87,192	-87,600	-408	-0.5%
Incl. PeakMemUse (bytes)	82,608	82,376	-232	-0.3%
Incl. PeakMemUse (bytes) per call	1,271	1,267	-4	-0.3%
Excl. PeakMemUse (bytes)	13,960	14,216	256	1.8%

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%	-284	-3.4%	-81	-0.9%	24	0.1%	-232	-1.2%
Exclusive Metrics Diff for Current Function			-2	-0.7%	27	33.3%	-408	-1700.0%	256	110.3%
*Parent functions*
Drupal\Core\Cache\DatabaseBackend::prepareItem	0	N/A%	-269	-94.7%	-62	-76.5%	24	100.0%	-232	-100.0%
Drupal\Core\Cache\DatabaseBackend::prepareItem@1	0	N/A%	-15	-5.3%	-19	-23.5%	0	0.0%	0	0.0%
*Child functions*
Drupal\Core\Database\Connection::query	0	N/A%	-290	-102.1%	-90	-111.1%	24	100.0%	-440	-189.7%
Drupal\Core\Database\Statement::fetchAllAssoc	0	N/A%	-10	-3.5%	-9	-11.1%	0	0.0%	24	10.3%
array_keys	0	N/A%	8	2.8%	-13	-16.0%	408	1700.0%	-16	-6.9%
array_diff	0	N/A%	6	2.1%	4	4.9%	0	0.0%	-96	-41.4%
drupal_static	0	N/A%	4	1.4%	3	3.7%	0	0.0%	40	17.2%
array_fill_keys	0	N/A%	0	0.0%	-3	-3.7%	0	0.0%	0	0.0%