Diff Report
Run #519c0a514701f: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519c0a965645d: 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 #519c0a514701fRun #519c0a965645dDiffDiff%
Number of Function Calls1 1 0 0.0%
Incl. Wall Time (microsec)1,094 904 -190 -17.4%
Incl. Wall Time (microsec) per call 1,094 904 -190 -17.4%
Excl. Wall Time (microsec)72 74 2 2.8%
Incl. CPU (microsecs)354 342 -12 -3.4%
Incl. CPU (microsecs) per call 354 342 -12 -3.4%
Excl. CPU (microsec)59 62 3 5.1%
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% -190 -12.6% -12 -1.3% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function2 1.1% 3 25.0% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Database\Database::openConnection0 N/A% -190 -100.0% -12 -100.0% 0 N/A% 0 N/A%
Child functions
PDO::__construct0 N/A% -168 -88.4% -8 -66.7% 0 N/A% 0 N/A%
PDO::exec0 N/A% -24 -12.6% -8 -66.7% 0 N/A% 0 N/A%
implode0 N/A% 0 0.0% 1 8.3% 0 N/A% 0 N/A%