Diff Report
Run #5391fc871e91d: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #5391fcf6ab927: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Asset\CssCollectionOptimizer::optimize

Drupal\Core\Asset\CssCollectionOptimizer::optimizeRun #5391fc871e91dRun #5391fcf6ab927DiffDiff%
Number of Function Calls1 1 0 0.0%
Incl. Wall Time (microsec)1,721 1,856 135 7.8%
Incl. Wall Time (microsec) per call 1,721 1,856 135 7.8%
Excl. Wall Time (microsec)107 110 3 2.8%
Incl. CPU (microsecs)1,472 1,515 43 2.9%
Incl. CPU (microsecs) per call 1,472 1,515 43 2.9%
Excl. CPU (microsec)97 99 2 2.1%
Incl. MemUse (bytes)15,924 15,924 0 0.0%
Incl. MemUse (bytes) per call 15,924 15,924 0 0.0%
Excl. MemUse (bytes)-33,740 -33,740 0 0.0%
Incl. PeakMemUse (bytes)31,512 31,512 0 0.0%
Incl. PeakMemUse (bytes) per call 31,512 31,512 0 0.0%
Excl. PeakMemUse (bytes)260 260 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% 135 8.2% 43 2.9% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function3 2.2% 2 4.7% 0 N/A% 0 N/A%
Parent function
drupal_pre_render_styles0 N/A% 135 100.0% 43 100.0% 0 N/A% 0 N/A%
Child functions
Drupal\Core\State\State::get0 N/A% 84 62.2% -7 -16.3% 0 N/A% 0 N/A%
file_exists0 N/A% 33 24.4% 33 76.7% 0 N/A% 0 N/A%
Drupal\Core\Asset\CssCollectionGrouper::group0 N/A% 9 6.7% 9 20.9% 0 N/A% 0 N/A%
Drupal\Core\Asset\CssCollectionOptimizer::generateHash0 N/A% 6 4.4% 6 14.0% 0 N/A% 0 N/A%