Diff Report
Run #51ec3b81ad265: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec3c5ab9ae4: 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 #51ec3c5ab9ae4DiffDiff%
Number of Function Calls1 1 0 0.0%
Incl. Wall Time (microsec)1,035 643 -392 -37.9%
Incl. Wall Time (microsec) per call 1,035 643 -392 -37.9%
Excl. Wall Time (microsec)55 36 -19 -34.5%
Incl. CPU (microsecs)399 206 -193 -48.4%
Incl. CPU (microsecs) per call 399 206 -193 -48.4%
Excl. CPU (microsec)47 33 -14 -29.8%
Incl. MemUse (bytes)12,952 12,936 -16 -0.1%
Incl. MemUse (bytes) per call 12,952 12,936 -16 -0.1%
Excl. MemUse (bytes)3,360 3,344 -16 -0.5%
Incl. PeakMemUse (bytes)12,160 12,144 -16 -0.1%
Incl. PeakMemUse (bytes) per call 12,160 12,144 -16 -0.1%
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% -392 -104.8% -193 -18.2% -16 -0.0% -16 -0.0%
Exclusive Metrics Diff for Current Function-19 -4.8% -14 -7.3% -16 -100.0% 0 0.0%
Parent function
Drupal\Core\Database\Database::openConnection0 N/A% -392 -100.0% -193 -100.0% -16 -100.0% -16 -100.0%
Child functions
PDO::__construct0 N/A% -292 -74.5% -144 -74.6% 0 0.0% 0 0.0%
PDO::exec0 N/A% -81 -20.7% -36 -18.7% 0 0.0% 0 0.0%
implode0 N/A% 0 0.0% 1 0.5% 0 0.0% -16 -100.0%