Diff Report
Run #51ec3b81ad265: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec3c1813b11: 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 #51ec3b81ad265Run #51ec3c1813b11DiffDiff%
Number of Function Calls1 1 0 0.0%
Incl. Wall Time (microsec)1,035 532 -503 -48.6%
Incl. Wall Time (microsec) per call 1,035 532 -503 -48.6%
Excl. Wall Time (microsec)55 37 -18 -32.7%
Incl. CPU (microsecs)399 203 -196 -49.1%
Incl. CPU (microsecs) per call 399 203 -196 -49.1%
Excl. CPU (microsec)47 34 -13 -27.7%
Incl. MemUse (bytes)12,952 12,952 0 0.0%
Incl. MemUse (bytes) per call 12,952 12,952 0 0.0%
Excl. MemUse (bytes)3,360 3,360 0 0.0%
Incl. PeakMemUse (bytes)12,160 12,160 0 0.0%
Incl. PeakMemUse (bytes) per call 12,160 12,160 0 0.0%
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% -503 -20.4% -196 -26.0% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function-18 -3.6% -13 -6.6% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Database\Database::openConnection0 N/A% -503 -100.0% -196 -100.0% 0 N/A% 0 N/A%
Child functions
PDO::__construct0 N/A% -399 -79.3% -144 -73.5% 0 N/A% 0 N/A%
PDO::exec0 N/A% -86 -17.1% -41 -20.9% 0 N/A% 0 N/A%
implode0 N/A% 0 0.0% 2 1.0% 0 N/A% 0 N/A%