Diff Report
Run #519e636f9416a: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519e62c02d767: 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 #519e636f9416aRun #519e62c02d767DiffDiff%
Number of Function Calls1 1 0 0.0%
Incl. Wall Time (microsec)600 1,037 437 72.8%
Incl. Wall Time (microsec) per call 600 1,037 437 72.8%
Excl. Wall Time (microsec)37 54 17 45.9%
Incl. CPU (microsecs)222 401 179 80.6%
Incl. CPU (microsecs) per call 222 401 179 80.6%
Excl. CPU (microsec)31 44 13 41.9%
Incl. MemUse (bytes)12,760 12,760 0 0.0%
Incl. MemUse (bytes) per call 12,760 12,760 0 0.0%
Excl. MemUse (bytes)3,160 3,160 0 0.0%
Incl. PeakMemUse (bytes)12,336 12,336 0 0.0%
Incl. PeakMemUse (bytes) per call 12,336 12,336 0 0.0%
Excl. PeakMemUse (bytes)1,584 1,584 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% 437 2.7% 179 1.2% 0 0.0% 0 0.0%
Exclusive Metrics Diff for Current Function17 3.9% 13 7.3% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Database\Database::openConnection0 N/A% 437 100.0% 179 100.0% 0 N/A% 0 N/A%
Child functions
PDO::__construct0 N/A% 342 78.3% 126 70.4% 0 N/A% 0 N/A%
PDO::exec0 N/A% 78 17.8% 40 22.3% 0 N/A% 0 N/A%
implode0 N/A% 0 0.0% 0 0.0% 0 N/A% 0 N/A%