Diff Report
Run #51ec66a5a877d: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec623000e0c: 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 #51ec66a5a877dRun #51ec623000e0cDiffDiff%
Number of Function Calls1 1 0 0.0%
Incl. Wall Time (microsec)1,030 645 -385 -37.4%
Incl. Wall Time (microsec) per call 1,030 645 -385 -37.4%
Excl. Wall Time (microsec)55 36 -19 -34.5%
Incl. CPU (microsecs)407 272 -135 -33.2%
Incl. CPU (microsecs) per call 407 272 -135 -33.2%
Excl. CPU (microsec)44 32 -12 -27.3%
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)3,344 3,344 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% -385 -16.4% -135 -3.9% 0 0.0% 0 0.0%
Exclusive Metrics Diff for Current Function-19 -4.9% -12 -8.9% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Database\Database::openConnection0 N/A% -385 -100.0% -135 -100.0% 0 N/A% 0 N/A%
Child functions
PDO::__construct0 N/A% -285 -74.0% -86 -63.7% 0 N/A% 0 N/A%
PDO::exec0 N/A% -81 -21.0% -36 -26.7% 0 N/A% 0 N/A%
implode0 N/A% 0 0.0% -1 -0.7% 0 N/A% 0 N/A%