Diff Report
Run #51abc588c7973: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #51abc4cb0a647: XHProf Run (Namespace=drupal-perf-cottser)
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Regression/Improvement summary for Drupal\Core\Database\Driver\mysql\Connection::open

Drupal\Core\Database\Driver\mysql\Connection::openRun #51abc588c7973Run #51abc4cb0a647DiffDiff%
Number of Function Calls1 1 0 0.0%
Incl. Wall Time (microsec)757 893 136 18.0%
Incl. Wall Time (microsec) per call 757 893 136 18.0%
Excl. Wall Time (microsec)40 40 0 0.0%
Incl. CPU (microsecs)277 319 42 15.2%
Incl. CPU (microsecs) per call 277 319 42 15.2%
Excl. CPU (microsec)37 35 -2 -5.4%
Incl. MemUse (bytes)12,848 12,848 0 0.0%
Incl. MemUse (bytes) per call 12,848 12,848 0 0.0%
Excl. MemUse (bytes)3,160 3,160 0 0.0%
Incl. PeakMemUse (bytes)12,496 12,568 72 0.6%
Incl. PeakMemUse (bytes) per call 12,496 12,568 72 0.6%
Excl. PeakMemUse (bytes)1,680 1,752 72 4.3%

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% 136 247.3% 42 2.5% 0 0.0% 72 0.3%
Exclusive Metrics Diff for Current Function0 0.0% -2 -4.8% 0 N/A% 72 100.0%
Parent function
Drupal\Core\Database\Database::openConnection0 N/A% 136 100.0% 42 100.0% 0 N/A% 72 100.0%
Child functions
PDO::__construct0 N/A% 131 96.3% 49 116.7% 0 N/A% 0 0.0%
PDO::exec0 N/A% 6 4.4% -5 -11.9% 0 N/A% 0 0.0%
implode0 N/A% -1 -0.7% 0 0.0% 0 N/A% 0 0.0%