XHProf: Hierarchical Profiler Report

Diff Report: Run #519ffa6332b29: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519ffa0e6cdec: XHProf Run (Namespace=drupal-perf-drupalcon)
Tip: Click a function name below to drill down.

Symfony\Component\HttpFoundation\HeaderBag::get	Run #519ffa6332b29	Run #519ffa0e6cdec	Diff	Diff%
Number of Function Calls	12	12	0	0.0%
Incl. Wall Time (microsec)	123	135	12	9.8%
Incl. Wall Time (microsec) per call	10	11	1	9.8%
Excl. Wall Time (microsec)	110	124	14	12.7%
Incl. CPU (microsecs)	0	0	0	N/A%
Incl. CPU (microsecs) per call	0	0	0	N/A%
Excl. CPU (microsec)	0	0	0	N/A%
Incl. MemUse (bytes)	9,072	9,072	0	0.0%
Incl. MemUse (bytes) per call	756	756	0	0.0%
Excl. MemUse (bytes)	5,048	5,048	0	0.0%
Incl. PeakMemUse (bytes)	8,848	8,848	0	0.0%
Incl. PeakMemUse (bytes) per call	737	737	0	0.0%
Excl. PeakMemUse (bytes)	6,456	6,456	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\HeaderBag::get	0	N/A%	12	0.6%	0	0.0%	0	0.0%	0	0.0%
Exclusive Metrics Diff for Current Function			14	116.7%	0	N/A%	0	N/A%	0	N/A%
*Parent functions*
Symfony\Component\HttpFoundation\Request::getHost	0	N/A%	11	91.7%	0	N/A%	0	N/A%	0	N/A%
Symfony\Component\HttpFoundation\Response::prepare	0	N/A%	1	8.3%	0	N/A%	0	N/A%	0	N/A%
Symfony\Component\HttpFoundation\Request::isXmlHttpRequest	0	N/A%	0	0.0%	0	N/A%	0	N/A%	0	N/A%
Symfony\Component\HttpFoundation\Request::getAcceptableContentTypes	0	N/A%	0	0.0%	0	N/A%	0	N/A%	0	N/A%
Symfony\Component\HttpFoundation\Request::createFromGlobals	0	N/A%	0	0.0%	0	N/A%	0	N/A%	0	N/A%
*Child functions*
array_key_exists	0	N/A%	-2	-16.7%	0	N/A%	0	N/A%	0	N/A%
count	0	N/A%	0	0.0%	0	N/A%	0	N/A%	0	N/A%
strtr	0	N/A%	0	0.0%	0	N/A%	0	N/A%	0	N/A%
strtolower	0	N/A%	0	0.0%	0	N/A%	0	N/A%	0	N/A%