Diff Report
Run #51ec623000e0c: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec66a5a877d: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for PDO::prepare

PDO::prepareRun #51ec623000e0cRun #51ec66a5a877dDiffDiff%
Number of Function Calls300 300 0 0.0%
Incl. Wall Time (microsec)2,804 2,855 51 1.8%
Incl. Wall Time (microsec) per call 9 10 0 1.8%
Excl. Wall Time (microsec)1,353 1,364 11 0.8%
Incl. CPU (microsecs)3,036 3,096 60 2.0%
Incl. CPU (microsecs) per call 10 10 0 2.0%
Excl. CPU (microsec)1,369 1,400 31 2.3%
Incl. MemUse (bytes)267,688 267,624 -64 -0.0%
Incl. MemUse (bytes) per call 892 892 -0 -0.0%
Excl. MemUse (bytes)251,272 251,248 -24 -0.0%
Incl. PeakMemUse (bytes)14,336 14,456 120 0.8%
Incl. PeakMemUse (bytes) per call 48 48 0 0.8%
Excl. PeakMemUse (bytes)12,352 12,432 80 0.6%

Parent/Child Regression/Improvement report for PDO::prepare [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
PDO::prepare0 N/A% 51 2.2% 60 1.7% -64 -0.1% 120 0.2%
Exclusive Metrics Diff for Current Function11 21.6% 31 51.7% -24 -37.5% 80 66.7%
Parent function
Drupal\Core\Database\Connection::prepareQuery0 N/A% 51 100.0% 60 100.0% -64 -100.0% 120 100.0%
Child function
Drupal\Core\Database\Statement::__construct0 N/A% 40 78.4% 29 48.3% -40 -62.5% 40 33.3%