Diff Report
Run #5198b3cd5c9c1: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #5198b38f0f1d5: XHProf Run (Namespace=drupal-perf-cottser)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #5198b3cd5c9c1Run #5198b38f0f1d5DiffDiff%
Number of Function Calls39 39 0 0.0%
Incl. Wall Time (microsec)15,806 15,330 -476 -3.0%
Incl. Wall Time (microsec) per call 405 393 -12 -3.0%
Excl. Wall Time (microsec)594 615 21 3.5%
Incl. CPU (microsecs)12,587 12,687 100 0.8%
Incl. CPU (microsecs) per call 323 325 3 0.8%
Excl. CPU (microsec)509 542 33 6.5%
Incl. MemUse (bytes)923,960 923,920 -40 -0.0%
Incl. MemUse (bytes) per call 23,691 23,690 -1 -0.0%
Excl. MemUse (bytes)-102,728 -102,728 0 0.0%
Incl. PeakMemUse (bytes)1,044,240 1,044,160 -80 -0.0%
Incl. PeakMemUse (bytes) per call 26,775 26,773 -2 -0.0%
Excl. PeakMemUse (bytes)3,112 3,112 0 0.0%

Parent/Child Regression/Improvement report for Drupal\Core\Cache\DatabaseBackend::prepareItem [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\Cache\DatabaseBackend::prepareItem0 N/A% -476 -103.7% 100 36.1% -40 -0.1% -80 -0.2%
Exclusive Metrics Diff for Current Function21 4.4% 33 33.0% 0 0.0% 0 0.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% -476 -100.0% 100 100.0% -40 -100.0% -80 -100.0%
Child functions
unserialize0 N/A% -285 -59.9% 84 84.0% -32 -80.0% -80 -100.0%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -218 -45.8% -26 -26.0% 0 0.0% 0 0.0%
explode0 N/A% 6 1.3% 9 9.0% -8 -20.0% 0 0.0%