Diff Report
Run #51ec491641923: 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 #51ec491641923Run #51ec485525502DiffDiff%
Number of Function Calls136 136 0 0.0%
Incl. Wall Time (microsec)19,651 19,054 -597 -3.0%
Incl. Wall Time (microsec) per call 144 140 -4 -3.0%
Excl. Wall Time (microsec)1,664 1,680 16 1.0%
Incl. CPU (microsecs)18,219 17,773 -446 -2.4%
Incl. CPU (microsecs) per call 134 131 -3 -2.4%
Excl. CPU (microsec)1,521 1,535 14 0.9%
Incl. MemUse (bytes)2,507,664 2,506,816 -848 -0.0%
Incl. MemUse (bytes) per call 18,439 18,432 -6 -0.0%
Excl. MemUse (bytes)-421,752 -421,464 288 0.1%
Incl. PeakMemUse (bytes)3,205,496 3,206,456 960 0.0%
Incl. PeakMemUse (bytes) per call 23,570 23,577 7 0.0%
Excl. PeakMemUse (bytes)8,376 8,728 352 4.2%

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% -597 -38.5% -446 -25.5% -848 -0.6% 960 0.7%
Exclusive Metrics Diff for Current Function16 2.7% 14 3.1% 288 34.0% 352 36.7%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% -597 -100.0% -446 -100.0% -848 -100.0% 960 100.0%
Child functions
unserialize0 N/A% -547 -91.6% -430 -96.4% -1,184 -139.6% 1,064 110.8%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -58 -9.7% -21 -4.7% 32 3.8% -472 -49.2%
explode0 N/A% -8 -1.3% -9 -2.0% 16 1.9% 16 1.7%