Diff Report
Run #51ec517fc2424: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec51f5849d9: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Database\Driver\mysql\Connection::open

Drupal\Core\Database\Driver\mysql\Connection::openRun #51ec517fc2424Run #51ec51f5849d9DiffDiff%
Number of Function Calls1 1 0 0.0%
Incl. Wall Time (microsec)1,058 594 -464 -43.9%
Incl. Wall Time (microsec) per call 1,058 594 -464 -43.9%
Excl. Wall Time (microsec)55 36 -19 -34.5%
Incl. CPU (microsecs)398 213 -185 -46.5%
Incl. CPU (microsecs) per call 398 213 -185 -46.5%
Excl. CPU (microsec)42 30 -12 -28.6%
Incl. MemUse (bytes)12,936 12,936 0 0.0%
Incl. MemUse (bytes) per call 12,936 12,936 0 0.0%
Excl. MemUse (bytes)3,320 3,320 0 0.0%
Incl. PeakMemUse (bytes)12,144 12,144 0 0.0%
Incl. PeakMemUse (bytes) per call 12,144 12,144 0 0.0%
Excl. PeakMemUse (bytes)1,808 1,808 0 0.0%

Parent/Child Regression/Improvement report for Drupal\Core\Database\Driver\mysql\Connection::open [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\Database\Driver\mysql\Connection::open0 N/A% -464 -15.9% -185 -5.9% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function-19 -4.1% -12 -6.5% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Database\Database::openConnection0 N/A% -464 -100.0% -185 -100.0% 0 N/A% 0 N/A%
Child functions
PDO::__construct0 N/A% -367 -79.1% -153 -82.7% 0 N/A% 0 N/A%
PDO::exec0 N/A% -78 -16.8% -20 -10.8% 0 N/A% 0 N/A%
implode0 N/A% 0 0.0% 0 0.0% 0 N/A% 0 N/A%