Diff Report
Run #539203c57074d: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #539201f8938f4: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Asset\CssCollectionOptimizer::optimize

Drupal\Core\Asset\CssCollectionOptimizer::optimizeRun #539203c57074dRun #539201f8938f4DiffDiff%
Number of Function Calls1 1 0 0.0%
Incl. Wall Time (microsec)1,950 1,849 -101 -5.2%
Incl. Wall Time (microsec) per call 1,950 1,849 -101 -5.2%
Excl. Wall Time (microsec)127 125 -2 -1.6%
Incl. CPU (microsecs)1,709 1,665 -44 -2.6%
Incl. CPU (microsecs) per call 1,709 1,665 -44 -2.6%
Excl. CPU (microsec)109 106 -3 -2.8%
Incl. MemUse (bytes)16,724 16,724 0 0.0%
Incl. MemUse (bytes) per call 16,724 16,724 0 0.0%
Excl. MemUse (bytes)-25,956 -25,956 0 0.0%
Incl. PeakMemUse (bytes)21,796 21,796 0 0.0%
Incl. PeakMemUse (bytes) per call 21,796 21,796 0 0.0%
Excl. PeakMemUse (bytes)408 408 0 0.0%

Parent/Child Regression/Improvement report for Drupal\Core\Asset\CssCollectionOptimizer::optimize [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
Drupal\Core\Asset\CssCollectionOptimizer::optimize0 N/A% -101 -40.9% -44 -9.0% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function-2 -2.0% -3 -6.8% 0 N/A% 0 N/A%
Parent function
drupal_pre_render_styles0 N/A% -101 -100.0% -44 -100.0% 0 N/A% 0 N/A%
Child functions
Drupal\Core\State\State::get0 N/A% -86 -85.1% -28 -63.6% 0 N/A% 0 N/A%
file_exists0 N/A% -9 -8.9% -8 -18.2% 0 N/A% 0 N/A%
Drupal\Core\Asset\CssCollectionOptimizer::generateHash0 N/A% -2 -2.0% -3 -6.8% 0 N/A% 0 N/A%
Drupal\Core\Asset\CssCollectionGrouper::group0 N/A% -2 -2.0% -2 -4.5% 0 N/A% 0 N/A%