XHProf: Hierarchical Profiler Report

Diff Report: Run #51ec3c5ab9ae4: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec3b81ad265: XHProf Run (Namespace=drupal-perf-drupalcon)
Tip: Click a function name below to drill down.

Drupal\Core\Cache\DatabaseBackend::checksumTags	Run #51ec3c5ab9ae4	Run #51ec3b81ad265	Diff	Diff%
Number of Function Calls	105	105	0	0.0%
Incl. Wall Time (microsec)	4,316	4,269	-47	-1.1%
Incl. Wall Time (microsec) per call	41	41	-0	-1.1%
Excl. Wall Time (microsec)	1,359	1,336	-23	-1.7%
Incl. CPU (microsecs)	3,709	3,638	-71	-1.9%
Incl. CPU (microsecs) per call	35	35	-1	-1.9%
Excl. CPU (microsec)	1,128	1,090	-38	-3.4%
Incl. MemUse (bytes)	72,856	72,856	0	0.0%
Incl. MemUse (bytes) per call	694	694	0	0.0%
Excl. MemUse (bytes)	-101,144	-101,144	0	0.0%
Incl. PeakMemUse (bytes)	95,584	95,504	-80	-0.1%
Incl. PeakMemUse (bytes) per call	910	910	-1	-0.1%
Excl. PeakMemUse (bytes)	18,328	18,344	16	0.1%

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%	-47	-12.6%	-71	-6.7%	0	0.0%	-80	-0.2%
Exclusive Metrics Diff for Current Function			-23	-48.9%	-38	-53.5%	0	N/A%	16	20.0%
*Parent functions*
Drupal\Core\Cache\DatabaseBackend::prepareItem	0	N/A%	-46	-97.9%	-70	-98.6%	0	N/A%	-80	-100.0%
Drupal\Core\Cache\DatabaseBackend::doSet	0	N/A%	-1	-2.1%	-1	-1.4%	0	N/A%	0	0.0%
*Child functions*
Drupal\Core\Database\Statement::fetchAllAssoc	0	N/A%	-19	-40.4%	-20	-28.2%	0	N/A%	0	0.0%
array_keys	0	N/A%	-7	-14.9%	2	2.8%	0	N/A%	-64	-80.0%
drupal_static	0	N/A%	4	8.5%	13	18.3%	0	N/A%	-32	-40.0%
Drupal\Core\Database\Connection::query	0	N/A%	-2	-4.3%	-24	-33.8%	0	N/A%	0	0.0%
array_fill_keys	0	N/A%	0	0.0%	-2	-2.8%	0	N/A%	0	0.0%
array_diff	0	N/A%	0	0.0%	-2	-2.8%	0	N/A%	0	0.0%