Diff Report
Run #51ec623000e0c: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec66a5a877d: 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 #51ec623000e0cRun #51ec66a5a877dDiffDiff%
Number of Function Calls1 1 0 0.0%
Incl. Wall Time (microsec)645 1,030 385 59.7%
Incl. Wall Time (microsec) per call 645 1,030 385 59.7%
Excl. Wall Time (microsec)36 55 19 52.8%
Incl. CPU (microsecs)272 407 135 49.6%
Incl. CPU (microsecs) per call 272 407 135 49.6%
Excl. CPU (microsec)32 44 12 37.5%
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 Function19 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%