Diff Report
Run #519fbf2154a5e: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519fc2983e6a9: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for substr

substrRun #519fbf2154a5eRun #519fc2983e6a9DiffDiff%
Number of Function Calls22 26 4 18.2%
Incl. Wall Time (microsec)1 4 3 300.0%
Incl. Wall Time (microsec) per call 0 0 0 238.5%
Excl. Wall Time (microsec)1 4 3 300.0%
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)7,932 8,488 556 7.0%
Incl. MemUse (bytes) per call 361 326 -34 -9.5%
Excl. MemUse (bytes)7,932 8,488 556 7.0%
Incl. PeakMemUse (bytes)2,012 2,500 488 24.3%
Incl. PeakMemUse (bytes) per call 91 96 5 5.1%
Excl. PeakMemUse (bytes)2,012 2,500 488 24.3%

Parent/Child Regression/Improvement report for substr [View Callgraph Diff]


Function NameCalls DiffCalls
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
substr4 100.0% 3 0.3% 0 0.0% 556 0.3% 488 0.2%
Exclusive Metrics Diff for Current Function3 100.0% 0 N/A% 556 100.0% 488 100.0%
Parent functions
Twig_Environment::getCacheFilename4 100.0% 0 0.0% 0 N/A% 548 98.6% 488 100.0%
devel_silent0 0.0% 0 0.0% 0 N/A% 0 0.0% 0 0.0%
drupal_strip_dangerous_protocols0 0.0% 0 0.0% 0 N/A% 0 0.0% 0 0.0%
Symfony\Component\HttpFoundation\Request::preparePathInfo0 0.0% 0 0.0% 0 N/A% 0 0.0% 0 0.0%
Symfony\Component\HttpFoundation\ServerBag::getHeaders0 0.0% 0 0.0% 0 N/A% 0 0.0% 0 0.0%
drupal_settings_initialize0 0.0% 0 0.0% 0 N/A% 0 0.0% 0 0.0%
Drupal\Component\Utility\Crypt::randomBytes0 0.0% 2 66.7% 0 N/A% 0 0.0% 0 0.0%
Drupal\Component\Uuid\Php::generate0 0.0% 0 0.0% 0 N/A% 8 1.4% 0 0.0%
request_path0 0.0% 1 33.3% 0 N/A% 0 0.0% 0 0.0%