Diff Report
Run #51ec5ca916d7d: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec5d631cb28: 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 #51ec5ca916d7dRun #51ec5d631cb28DiffDiff%
Number of Function Calls1 1 0 0.0%
Incl. Wall Time (microsec)1,035 591 -444 -42.9%
Incl. Wall Time (microsec) per call 1,035 591 -444 -42.9%
Excl. Wall Time (microsec)55 36 -19 -34.5%
Incl. CPU (microsecs)394 211 -183 -46.4%
Incl. CPU (microsecs) per call 394 211 -183 -46.4%
Excl. CPU (microsec)46 29 -17 -37.0%
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)12,144 12,248 104 0.9%
Incl. PeakMemUse (bytes) per call 12,144 12,248 104 0.9%
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 Function-19 -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%