Diff Report
Run #538e3ac0de109: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #538e3af7e977d: XHProf Run (Namespace=drupal-perf-cottser)
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Regression/Improvement summary for Drupal\Core\Database\Driver\mysql\Connection::open

Drupal\Core\Database\Driver\mysql\Connection::openRun #538e3ac0de109Run #538e3af7e977dDiffDiff%
Number of Function Calls1 1 0 0.0%
Incl. Wall Time (microsec)339 390 51 15.0%
Incl. Wall Time (microsec) per call 339 390 51 15.0%
Excl. Wall Time (microsec)27 28 1 3.7%
Incl. CPU (microsecs)134 143 9 6.7%
Incl. CPU (microsecs) per call 134 143 9 6.7%
Excl. CPU (microsec)23 25 2 8.7%
Incl. MemUse (bytes)12,984 12,984 0 0.0%
Incl. MemUse (bytes) per call 12,984 12,984 0 0.0%
Excl. MemUse (bytes)3,320 3,320 0 0.0%
Incl. PeakMemUse (bytes)11,560 11,560 0 0.0%
Incl. PeakMemUse (bytes) per call 11,560 11,560 0 0.0%
Excl. PeakMemUse (bytes)1,760 1,760 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% 51 7.0% 9 1.2% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function1 2.0% 2 22.2% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Database\Database::openConnection0 N/A% 51 100.0% 9 100.0% 0 N/A% 0 N/A%
Child functions
PDO::exec0 N/A% 46 90.2% 7 77.8% 0 N/A% 0 N/A%
PDO::__construct0 N/A% 4 7.8% 1 11.1% 0 N/A% 0 N/A%
implode0 N/A% 0 0.0% -1 -11.1% 0 N/A% 0 N/A%