Diff Report
Run #52e4374042ace: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #52e436ce9c71d: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for PDO::prepare

PDO::prepareRun #52e4374042aceRun #52e436ce9c71dDiffDiff%
Number of Function Calls122 121 -1 -0.8%
Incl. Wall Time (microsec)1,031 1,038 7 0.7%
Incl. Wall Time (microsec) per call 8 9 0 1.5%
Excl. Wall Time (microsec)495 500 5 1.0%
Incl. CPU (microsecs)1,140 1,131 -9 -0.8%
Incl. CPU (microsecs) per call 9 9 0 0.0%
Excl. CPU (microsec)516 490 -26 -5.0%
Incl. MemUse (bytes)113,008 112,104 -904 -0.8%
Incl. MemUse (bytes) per call 926 926 0 0.0%
Excl. MemUse (bytes)105,184 104,328 -856 -0.8%
Incl. PeakMemUse (bytes)17,944 17,560 -384 -2.1%
Incl. PeakMemUse (bytes) per call 147 145 -2 -1.3%
Excl. PeakMemUse (bytes)15,192 15,016 -176 -1.2%

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::prepare-1 -50.0% 7 0.6% -9 -0.9% -904 -1.1% -384 -0.5%
Exclusive Metrics Diff for Current Function5 71.4% -26 -288.9% -856 -94.7% -176 -45.8%
Parent function
Drupal\Core\Database\Connection::prepareQuery-1 -100.0% 7 100.0% -9 -100.0% -904 -100.0% -384 -100.0%
Child function
Drupal\Core\Database\Statement::__construct-1 -100.0% 2 28.6% 17 188.9% -48 -5.3% -208 -54.2%