XHProf: Hierarchical Profiler Report

Diff Report: Run #531ee5f3237b0: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #531ee657ba49e: XHProf Run (Namespace=drupal-perf-cottser)
Tip: Click a function name below to drill down.

Symfony\Component\HttpFoundation\Request::getAcceptableContentTypes	Run #531ee5f3237b0	Run #531ee657ba49e	Diff	Diff%
Number of Function Calls	5	5	0	0.0%
Incl. Wall Time (microsec)	790	763	-27	-3.4%
Incl. Wall Time (microsec) per call	158	153	-5	-3.4%
Excl. Wall Time (microsec)	37	36	-1	-2.7%
Incl. CPU (microsecs)	800	767	-33	-4.1%
Incl. CPU (microsecs) per call	160	153	-7	-4.1%
Excl. CPU (microsec)	37	29	-8	-21.6%
Incl. MemUse (bytes)	103,872	103,848	-24	-0.0%
Incl. MemUse (bytes) per call	20,774	20,770	-5	-0.0%
Excl. MemUse (bytes)	-376	-376	0	0.0%
Incl. PeakMemUse (bytes)	94,040	94,016	-24	-0.0%
Incl. PeakMemUse (bytes) per call	18,808	18,803	-5	-0.0%
Excl. PeakMemUse (bytes)	2,360	2,360	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*
Symfony\Component\HttpFoundation\Request::getAcceptableContentTypes	0	N/A%	-27	-1.1%	-33	-1.1%	-24	-0.0%	-24	-0.0%
Exclusive Metrics Diff for Current Function			-1	-3.7%	-8	-24.2%	0	0.0%	0	0.0%
*Parent functions*
Drupal\Core\Routing\MimeTypeMatcher::filter	0	N/A%	-27	-100.0%	-28	-84.8%	-24	-100.0%	-24	-100.0%
Drupal\Core\ContentNegotiation::getContentType	0	N/A%	0	0.0%	-5	-15.2%	0	0.0%	0	0.0%
*Child functions*
Symfony\Component\HttpFoundation\AcceptHeader::fromString	0	N/A%	-23	-85.2%	-24	-72.7%	16	66.7%	-72	-300.0%
Symfony\Component\ClassLoader\ApcClassLoader::loadClass	0	N/A%	-3	-11.1%	-3	-9.1%	-40	-166.7%	48	200.0%
array_keys	0	N/A%	0	0.0%	-1	-3.0%	0	0.0%	0	0.0%
Symfony\Component\HttpFoundation\AcceptHeader::all	0	N/A%	0	0.0%	2	6.1%	0	0.0%	0	0.0%
Symfony\Component\HttpFoundation\HeaderBag::get	0	N/A%	0	0.0%	1	3.0%	0	0.0%	0	0.0%