XHProf: Hierarchical Profiler Report

Diff Report: Run #539205a48c548: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #539206513e72e: XHProf Run (Namespace=drupal-perf-drupalcon)
Tip: Click a function name below to drill down.

Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage::setSaveHandler	Run #539205a48c548	Run #539206513e72e	Diff	Diff%
Number of Function Calls	2	2	0	0.0%
Incl. Wall Time (microsec)	210	191	-19	-9.0%
Incl. Wall Time (microsec) per call	105	96	-10	-9.0%
Excl. Wall Time (microsec)	72	62	-10	-13.9%
Incl. CPU (microsecs)	214	196	-18	-8.4%
Incl. CPU (microsecs) per call	107	98	-9	-8.4%
Excl. CPU (microsec)	47	42	-5	-10.6%
Incl. MemUse (bytes)	17,620	17,620	0	0.0%
Incl. MemUse (bytes) per call	8,810	8,810	0	0.0%
Excl. MemUse (bytes)	1,864	1,864	0	0.0%
Incl. PeakMemUse (bytes)	14,316	14,316	0	0.0%
Incl. PeakMemUse (bytes) per call	7,158	7,158	0	0.0%
Excl. PeakMemUse (bytes)	2,224	2,224	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\Session\Storage\NativeSessionStorage::setSaveHandler	0	N/A%	-19	-2.1%	-18	-5.2%	0	N/A%	0	N/A%
Exclusive Metrics Diff for Current Function			-10	-52.6%	-5	-27.8%	0	N/A%	0	N/A%
*Parent functions*
Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage::__construct	0	N/A%	-20	-105.3%	-19	-105.6%	0	N/A%	0	N/A%
Drupal\Core\Session\SessionManager::initialize	0	N/A%	1	5.3%	1	5.6%	0	N/A%	0	N/A%
*Child functions*
Symfony\Component\ClassLoader\ApcClassLoader::loadClass	0	N/A%	-9	-47.4%	-8	-44.4%	0	N/A%	0	N/A%
Symfony\Component\HttpFoundation\Session\Storage\Proxy\SessionHandlerProxy::__construct	0	N/A%	-1	-5.3%	-8	-44.4%	0	N/A%	0	N/A%
version_compare	0	N/A%	1	5.3%	1	5.6%	0	N/A%	0	N/A%
session_set_save_handler	0	N/A%	0	0.0%	0	0.0%	0	N/A%	0	N/A%
phpversion	0	N/A%	0	0.0%	2	11.1%	0	N/A%	0	N/A%