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

PDO::prepareRun #51ec66a5a877dRun #51ec623000e0cDiffDiff%
Number of Function Calls300 300 0 0.0%
Incl. Wall Time (microsec)2,855 2,804 -51 -1.8%
Incl. Wall Time (microsec) per call 10 9 -0 -1.8%
Excl. Wall Time (microsec)1,364 1,353 -11 -0.8%
Incl. CPU (microsecs)3,096 3,036 -60 -1.9%
Incl. CPU (microsecs) per call 10 10 -0 -1.9%
Excl. CPU (microsec)1,400 1,369 -31 -2.2%
Incl. MemUse (bytes)267,624 267,688 64 0.0%
Incl. MemUse (bytes) per call 892 892 0 0.0%
Excl. MemUse (bytes)251,248 251,272 24 0.0%
Incl. PeakMemUse (bytes)14,456 14,336 -120 -0.8%
Incl. PeakMemUse (bytes) per call 48 48 -0 -0.8%
Excl. PeakMemUse (bytes)12,432 12,352 -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 Function-11 -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%