Diff Report
Run #53923e49d2b58: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #53923d861ff11: 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 #53923e49d2b58Run #53923d861ff11DiffDiff%
Number of Function Calls1 1 0 0.0%
Incl. Wall Time (microsec)977 860 -117 -12.0%
Incl. Wall Time (microsec) per call 977 860 -117 -12.0%
Excl. Wall Time (microsec)66 70 4 6.1%
Incl. CPU (microsecs)238 305 67 28.2%
Incl. CPU (microsecs) per call 238 305 67 28.2%
Excl. CPU (microsec)59 60 1 1.7%
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% -117 -7.5% 67 6.1% 0 0.0% 0 0.0%
Exclusive Metrics Diff for Current Function4 3.4% 1 1.5% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Database\Database::openConnection0 N/A% -117 -100.0% 67 100.0% 0 N/A% 0 N/A%
Child functions
PDO::exec0 N/A% -110 -94.0% 50 74.6% 0 N/A% 0 N/A%
PDO::__construct0 N/A% -12 -10.3% 15 22.4% 0 N/A% 0 N/A%
implode0 N/A% 1 0.9% 1 1.5% 0 N/A% 0 N/A%