Diff Report
Run #519c0a965645d: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519c0a514701f: 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 #519c0a965645dRun #519c0a514701fDiffDiff%
Number of Function Calls1 1 0 0.0%
Incl. Wall Time (microsec)904 1,094 190 21.0%
Incl. Wall Time (microsec) per call 904 1,094 190 21.0%
Excl. Wall Time (microsec)74 72 -2 -2.7%
Incl. CPU (microsecs)342 354 12 3.5%
Incl. CPU (microsecs) per call 342 354 12 3.5%
Excl. CPU (microsec)62 59 -3 -4.8%
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 Function-2 -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%