Diff Report
Run #53923e49d2b58: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #53923d861ff11: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Asset\CssCollectionOptimizer::optimize

Drupal\Core\Asset\CssCollectionOptimizer::optimizeRun #53923e49d2b58Run #53923d861ff11DiffDiff%
Number of Function Calls1 1 0 0.0%
Incl. Wall Time (microsec)1,964 2,000 36 1.8%
Incl. Wall Time (microsec) per call 1,964 2,000 36 1.8%
Excl. Wall Time (microsec)134 132 -2 -1.5%
Incl. CPU (microsecs)1,754 1,719 -35 -2.0%
Incl. CPU (microsecs) per call 1,754 1,719 -35 -2.0%
Excl. CPU (microsec)119 114 -5 -4.2%
Incl. MemUse (bytes)16,624 16,624 0 0.0%
Incl. MemUse (bytes) per call 16,624 16,624 0 0.0%
Excl. MemUse (bytes)-30,284 -30,284 0 0.0%
Incl. PeakMemUse (bytes)22,340 22,404 64 0.3%
Incl. PeakMemUse (bytes) per call 22,340 22,404 64 0.3%
Excl. PeakMemUse (bytes)336 336 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% 36 2.3% -35 -3.2% 0 0.0% 64 9.2%
Exclusive Metrics Diff for Current Function-2 -5.6% -5 -14.3% 0 N/A% 0 0.0%
Parent function
drupal_pre_render_styles0 N/A% 36 100.0% -35 -100.0% 0 N/A% 64 100.0%
Child functions
Drupal\Core\State\State::get0 N/A% 70 194.4% 0 0.0% 0 N/A% 64 100.0%
Drupal\Core\Asset\CssCollectionGrouper::group0 N/A% -16 -44.4% -16 -45.7% 0 N/A% 0 0.0%
file_exists0 N/A% -13 -36.1% -14 -40.0% 0 N/A% 0 0.0%
Drupal\Core\Asset\CssCollectionOptimizer::generateHash0 N/A% -3 -8.3% 0 0.0% 0 N/A% 0 0.0%