Diff Report
Run #539201f8938f4: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #5392041970f3f: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Asset\CssCollectionOptimizer::optimize

Drupal\Core\Asset\CssCollectionOptimizer::optimizeRun #539201f8938f4Run #5392041970f3fDiffDiff%
Number of Function Calls1 1 0 0.0%
Incl. Wall Time (microsec)1,849 2,029 180 9.7%
Incl. Wall Time (microsec) per call 1,849 2,029 180 9.7%
Excl. Wall Time (microsec)125 127 2 1.6%
Incl. CPU (microsecs)1,665 1,721 56 3.4%
Incl. CPU (microsecs) per call 1,665 1,721 56 3.4%
Excl. CPU (microsec)106 111 5 4.7%
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 21,772 -24 -0.1%
Incl. PeakMemUse (bytes) per call 21,796 21,772 -24 -0.1%
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% 180 12.3% 56 2.1% 0 0.0% -24 -0.0%
Exclusive Metrics Diff for Current Function2 1.1% 5 8.9% 0 N/A% 0 0.0%
Parent function
drupal_pre_render_styles0 N/A% 180 100.0% 56 100.0% 0 N/A% -24 -100.0%
Child functions
Drupal\Core\State\State::get0 N/A% 128 71.1% 1 1.8% 0 N/A% -28 -116.7%
file_exists0 N/A% 18 10.0% 18 32.1% 0 N/A% 4 16.7%
Drupal\Core\Asset\CssCollectionOptimizer::generateHash0 N/A% 16 8.9% 17 30.4% 0 N/A% 0 0.0%
Drupal\Core\Asset\CssCollectionGrouper::group0 N/A% 16 8.9% 15 26.8% 0 N/A% 0 0.0%