Diff Report
Run #518e77f228c59: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #518e79c023047: XHProf Run (Namespace=drupal-perf-cottser)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #518e77f228c59Run #518e79c023047DiffDiff%
Number of Function Calls68 68 0 0.0%
Incl. Wall Time (microsec)22,019 22,452 433 2.0%
Incl. Wall Time (microsec) per call 324 330 6 2.0%
Excl. Wall Time (microsec)1,086 1,059 -27 -2.5%
Incl. CPU (microsecs)18,001 18,261 260 1.4%
Incl. CPU (microsecs) per call 265 269 4 1.4%
Excl. CPU (microsec)996 968 -28 -2.8%
Incl. MemUse (bytes)1,607,280 1,607,256 -24 -0.0%
Incl. MemUse (bytes) per call 23,636 23,636 -0 -0.0%
Excl. MemUse (bytes)-172,176 -172,176 0 0.0%
Incl. PeakMemUse (bytes)2,165,632 2,165,552 -80 -0.0%
Incl. PeakMemUse (bytes) per call 31,848 31,846 -1 -0.0%
Excl. PeakMemUse (bytes)9,792 9,744 -48 -0.5%

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% 433 79.9% 260 32.7% -24 -0.1% -80 -0.3%
Exclusive Metrics Diff for Current Function-27 -6.2% -28 -10.8% 0 0.0% -48 -60.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 433 100.0% 260 100.0% -24 -100.0% -80 -100.0%
Child functions
unserialize0 N/A% 264 61.0% 230 88.5% -32 -133.3% 8 10.0%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 198 45.7% 57 21.9% 16 66.7% -24 -30.0%
explode0 N/A% -2 -0.5% 1 0.4% -8 -33.3% -16 -20.0%