XHProf: Hierarchical Profiler Report

Diff Report: Run #519a4774889dd: XHProf Run (Namespace=drupal-perf-steveoliver)
vs.
Run #519a4887d3a25: XHProf Run (Namespace=drupal-perf-steveoliver)
Tip: Click a function name below to drill down.

Symfony\Component\HttpFoundation\HeaderBag::has	Run #519a4774889dd	Run #519a4887d3a25	Diff	Diff%
Number of Function Calls	19	19	0	0.0%
Incl. Wall Time (microsec)	1,590	8,005	6,415	403.5%
Incl. Wall Time (microsec) per call	84	421	338	403.5%
Excl. Wall Time (microsec)	864	4,290	3,426	396.5%
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)	11,072	11,048	-24	-0.2%
Incl. MemUse (bytes) per call	583	581	-1	-0.2%
Excl. MemUse (bytes)	5,408	5,384	-24	-0.4%
Incl. PeakMemUse (bytes)	7,400	7,376	-24	-0.3%
Incl. PeakMemUse (bytes) per call	389	388	-1	-0.3%
Excl. PeakMemUse (bytes)	4,328	4,304	-24	-0.6%

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::has	0	N/A%	6,415	0.0%	0	0.0%	-24	-1.4%	-24	-1.6%
Exclusive Metrics Diff for Current Function			3,426	53.4%	0	N/A%	-24	-100.0%	-24	-100.0%
*Parent functions*
Symfony\Component\HttpFoundation\ResponseHeaderBag::computeCacheControlValue	0	N/A%	3,299	51.4%	0	N/A%	0	0.0%	0	0.0%
Symfony\Component\HttpFoundation\Request::prepareRequestUri	0	N/A%	1,468	22.9%	0	N/A%	-24	-100.0%	-24	-100.0%
Symfony\Component\HttpFoundation\Response::prepare	0	N/A%	991	15.4%	0	N/A%	0	0.0%	0	0.0%
Symfony\Component\HttpFoundation\Response::__construct	0	N/A%	657	10.2%	0	N/A%	0	0.0%	0	0.0%
*Child functions*
strtolower	0	N/A%	1,036	16.1%	0	N/A%	0	0.0%	0	0.0%
strtr	0	N/A%	993	15.5%	0	N/A%	0	0.0%	0	0.0%
array_key_exists	0	N/A%	960	15.0%	0	N/A%	0	0.0%	0	0.0%