XHProf: Hierarchical Profiler Report

Diff Report: Run #539205a48c548: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #539206aca7ae8: XHProf Run (Namespace=drupal-perf-drupalcon)
Tip: Click a function name below to drill down.

Drupal\Core\Entity\Query\Sql\Tables::getTableMapping	Run #539205a48c548	Run #539206aca7ae8	Diff	Diff%
Number of Function Calls	12	12	0	0.0%
Incl. Wall Time (microsec)	3,025	2,983	-42	-1.4%
Incl. Wall Time (microsec) per call	252	249	-4	-1.4%
Excl. Wall Time (microsec)	174	173	-1	-0.6%
Incl. CPU (microsecs)	2,777	2,786	9	0.3%
Incl. CPU (microsecs) per call	231	232	1	0.3%
Excl. CPU (microsec)	124	135	11	8.9%
Incl. MemUse (bytes)	146,356	146,324	-32	-0.0%
Incl. MemUse (bytes) per call	12,196	12,194	-3	-0.0%
Excl. MemUse (bytes)	-9,400	-9,396	4	0.0%
Incl. PeakMemUse (bytes)	146,116	145,972	-144	-0.1%
Incl. PeakMemUse (bytes) per call	12,176	12,164	-12	-0.1%
Excl. PeakMemUse (bytes)	360	360	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\Entity\Query\Sql\Tables::getTableMapping	0	N/A%	-42	-0.9%	9	0.2%	-32	-0.0%	-144	-0.1%
Exclusive Metrics Diff for Current Function			-1	-2.4%	11	122.2%	4	12.5%	0	0.0%
*Parent function*
Drupal\Core\Entity\Query\Sql\Tables::addField	0	N/A%	-42	-100.0%	9	100.0%	-32	-100.0%	-144	-100.0%
*Child functions*
drupal_get_schema	0	N/A%	-88	-209.5%	-38	-422.2%	-32	-100.0%	-32	-22.2%
Drupal\Core\Entity\Sql\DefaultTableMapping::getAllColumns	0	N/A%	34	81.0%	34	377.8%	0	0.0%	-92	-63.9%
Drupal\Core\Entity\ContentEntityDatabaseStorage::getTableMapping	0	N/A%	5	11.9%	-1	-11.1%	0	0.0%	0	0.0%
array_keys	0	N/A%	5	11.9%	3	33.3%	-4	-12.5%	-20	-13.9%
Drupal\Core\Entity\EntityManager::getStorage	0	N/A%	3	7.1%	1	11.1%	0	0.0%	0	0.0%
array_flip	0	N/A%	0	0.0%	-1	-11.1%	0	0.0%	0	0.0%