XHProf: Hierarchical Profiler Report

Diff Report: Run #51a944519b58c: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #51a9457328375: XHProf Run (Namespace=drupal-perf-cottser)
Tip: Click a function name below to drill down.

Drupal\Core\Cache\DatabaseBackend::checksumTags	Run #51a944519b58c	Run #51a9457328375	Diff	Diff%
Number of Function Calls	125	125	0	0.0%
Incl. Wall Time (microsec)	6,316	6,060	-256	-4.1%
Incl. Wall Time (microsec) per call	51	48	-2	-4.1%
Excl. Wall Time (microsec)	1,784	1,770	-14	-0.8%
Incl. CPU (microsecs)	4,514	4,353	-161	-3.6%
Incl. CPU (microsecs) per call	36	35	-1	-3.6%
Excl. CPU (microsec)	1,439	1,405	-34	-2.4%
Incl. MemUse (bytes)	85,864	85,864	0	0.0%
Incl. MemUse (bytes) per call	687	687	0	0.0%
Excl. MemUse (bytes)	-135,968	-135,968	0	0.0%
Incl. PeakMemUse (bytes)	84,160	84,160	0	0.0%
Incl. PeakMemUse (bytes) per call	673	673	0	0.0%
Excl. PeakMemUse (bytes)	23,256	23,256	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%	-256	-29.8%	-161	-18.3%	0	N/A%	0	N/A%
Exclusive Metrics Diff for Current Function			-14	-5.5%	-34	-21.1%	0	N/A%	0	N/A%
*Parent functions*
Drupal\Core\Cache\DatabaseBackend::prepareItem	0	N/A%	-245	-95.7%	-152	-94.4%	0	N/A%	0	N/A%
Drupal\Core\Cache\DatabaseBackend::prepareItem@1	0	N/A%	-11	-4.3%	-9	-5.6%	0	N/A%	0	N/A%
*Child functions*
Drupal\Core\Database\Connection::query	0	N/A%	-168	-65.6%	-66	-41.0%	0	N/A%	0	N/A%
drupal_static	0	N/A%	-38	-14.8%	-16	-9.9%	0	N/A%	0	N/A%
Drupal\Core\Database\Statement::fetchAllAssoc	0	N/A%	-16	-6.2%	-19	-11.8%	0	N/A%	0	N/A%
array_diff	0	N/A%	-11	-4.3%	-16	-9.9%	0	N/A%	0	N/A%
array_keys	0	N/A%	-9	-3.5%	-6	-3.7%	0	N/A%	0	N/A%
array_fill_keys	0	N/A%	0	0.0%	-4	-2.5%	0	N/A%	0	N/A%