Diff Report
Run #51ec489b18752: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec485525502: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #51ec489b18752Run #51ec485525502DiffDiff%
Number of Function Calls136 136 0 0.0%
Incl. Wall Time (microsec)19,496 19,054 -442 -2.3%
Incl. Wall Time (microsec) per call 143 140 -3 -2.3%
Excl. Wall Time (microsec)1,692 1,680 -12 -0.7%
Incl. CPU (microsecs)18,082 17,773 -309 -1.7%
Incl. CPU (microsecs) per call 133 131 -2 -1.7%
Excl. CPU (microsec)1,550 1,535 -15 -1.0%
Incl. MemUse (bytes)2,506,816 2,506,816 0 0.0%
Incl. MemUse (bytes) per call 18,432 18,432 0 0.0%
Excl. MemUse (bytes)-421,464 -421,464 0 0.0%
Incl. PeakMemUse (bytes)3,206,456 3,206,456 0 0.0%
Incl. PeakMemUse (bytes) per call 23,577 23,577 0 0.0%
Excl. PeakMemUse (bytes)8,728 8,728 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% -442 -43.2% -309 -78.6% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function-12 -2.7% -15 -4.9% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% -442 -100.0% -309 -100.0% 0 N/A% 0 N/A%
Child functions
unserialize0 N/A% -400 -90.5% -300 -97.1% 0 N/A% 0 N/A%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -27 -6.1% 8 2.6% 0 N/A% 0 N/A%
explode0 N/A% -3 -0.7% -2 -0.6% 0 N/A% 0 N/A%