Diff Report
Run #51ec5d631cb28: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec5ca916d7d: 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 #51ec5d631cb28Run #51ec5ca916d7dDiffDiff%
Number of Function Calls1 1 0 0.0%
Incl. Wall Time (microsec)591 1,035 444 75.1%
Incl. Wall Time (microsec) per call 591 1,035 444 75.1%
Excl. Wall Time (microsec)36 55 19 52.8%
Incl. CPU (microsecs)211 394 183 86.7%
Incl. CPU (microsecs) per call 211 394 183 86.7%
Excl. CPU (microsec)29 46 17 58.6%
Incl. MemUse (bytes)12,936 12,936 0 0.0%
Incl. MemUse (bytes) per call 12,936 12,936 0 0.0%
Excl. MemUse (bytes)3,344 3,344 0 0.0%
Incl. PeakMemUse (bytes)12,248 12,144 -104 -0.8%
Incl. PeakMemUse (bytes) per call 12,248 12,144 -104 -0.8%
Excl. PeakMemUse (bytes)1,808 1,808 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% 444 5.6% 183 2.0% 0 0.0% -104 -0.2%
Exclusive Metrics Diff for Current Function19 4.3% 17 9.3% 0 N/A% 0 0.0%
Parent function
Drupal\Core\Database\Database::openConnection0 N/A% 444 100.0% 183 100.0% 0 N/A% -104 -100.0%
Child functions
PDO::__construct0 N/A% 348 78.4% 136 74.3% 0 N/A% 0 0.0%
PDO::exec0 N/A% 77 17.3% 32 17.5% 0 N/A% 0 0.0%
implode0 N/A% 0 0.0% -2 -1.1% 0 N/A% -104 -100.0%