Diff Report
Run #519be9a13e594: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519bea2c59e7a: 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 #519be9a13e594Run #519bea2c59e7aDiffDiff%
Number of Function Calls1 1 0 0.0%
Incl. Wall Time (microsec)1,122 1,158 36 3.2%
Incl. Wall Time (microsec) per call 1,122 1,158 36 3.2%
Excl. Wall Time (microsec)67 68 1 1.5%
Incl. CPU (microsecs)296 308 12 4.1%
Incl. CPU (microsecs) per call 296 308 12 4.1%
Excl. CPU (microsec)57 59 2 3.5%
Incl. MemUse (bytes)3,568 3,568 0 0.0%
Incl. MemUse (bytes) per call 3,568 3,568 0 0.0%
Excl. MemUse (bytes)1,812 1,812 0 0.0%
Incl. PeakMemUse (bytes)3,332 3,332 0 0.0%
Incl. PeakMemUse (bytes) per call 3,332 3,332 0 0.0%
Excl. PeakMemUse (bytes)1,728 1,728 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% 36 3.0% 12 28.6% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function1 2.8% 2 16.7% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Database\Database::openConnection0 N/A% 36 100.0% 12 100.0% 0 N/A% 0 N/A%
Child functions
PDO::exec0 N/A% 31 86.1% 6 50.0% 0 N/A% 0 N/A%
PDO::__construct0 N/A% 4 11.1% 4 33.3% 0 N/A% 0 N/A%
implode0 N/A% 0 0.0% 0 0.0% 0 N/A% 0 N/A%