Diff Report
Run #539201f8938f4: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #5392041970f3f: 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 #539201f8938f4Run #5392041970f3fDiffDiff%
Number of Function Calls1 1 0 0.0%
Incl. Wall Time (microsec)905 1,061 156 17.2%
Incl. Wall Time (microsec) per call 905 1,061 156 17.2%
Excl. Wall Time (microsec)47 93 46 97.9%
Incl. CPU (microsecs)231 322 91 39.4%
Incl. CPU (microsecs) per call 231 322 91 39.4%
Excl. CPU (microsec)38 81 43 113.2%
Incl. MemUse (bytes)3,444 3,444 0 0.0%
Incl. MemUse (bytes) per call 3,444 3,444 0 0.0%
Excl. MemUse (bytes)1,680 1,680 0 0.0%
Incl. PeakMemUse (bytes)3,004 3,004 0 0.0%
Incl. PeakMemUse (bytes) per call 3,004 3,004 0 0.0%
Excl. PeakMemUse (bytes)1,436 1,436 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% 156 10.6% 91 3.4% 0 0.0% 0 0.0%
Exclusive Metrics Diff for Current Function46 29.5% 43 47.3% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Database\Database::openConnection0 N/A% 156 100.0% 91 100.0% 0 N/A% 0 N/A%
Child functions
PDO::exec0 N/A% 171 109.6% 70 76.9% 0 N/A% 0 N/A%
PDO::__construct0 N/A% -62 -39.7% -22 -24.2% 0 N/A% 0 N/A%
implode0 N/A% 1 0.6% 0 0.0% 0 N/A% 0 N/A%