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

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #51ec485525502Run #51ec489b18752DiffDiff%
Number of Function Calls136 136 0 0.0%
Incl. Wall Time (microsec)19,054 19,496 442 2.3%
Incl. Wall Time (microsec) per call 140 143 3 2.3%
Excl. Wall Time (microsec)1,680 1,692 12 0.7%
Incl. CPU (microsecs)17,773 18,082 309 1.7%
Incl. CPU (microsecs) per call 131 133 2 1.7%
Excl. CPU (microsec)1,535 1,550 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 Function12 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%