Diff Report
Run #519d4dc9980f7: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519d4cd4e396d: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519d4dc9980f7Run #519d4cd4e396dDiffDiff%
Number of Function Calls103 103 0 0.0%
Incl. Wall Time (microsec)36,152 35,218 -934 -2.6%
Incl. Wall Time (microsec) per call 351 342 -9 -2.6%
Excl. Wall Time (microsec)2,209 2,298 89 4.0%
Incl. CPU (microsecs)30,238 29,827 -411 -1.4%
Incl. CPU (microsecs) per call 294 290 -4 -1.4%
Excl. CPU (microsec)2,065 2,112 47 2.3%
Incl. MemUse (bytes)988,884 988,828 -56 -0.0%
Incl. MemUse (bytes) per call 9,601 9,600 -1 -0.0%
Excl. MemUse (bytes)-271,740 -271,740 0 0.0%
Incl. PeakMemUse (bytes)1,382,668 1,383,228 560 0.0%
Incl. PeakMemUse (bytes) per call 13,424 13,429 5 0.0%
Excl. PeakMemUse (bytes)5,592 5,592 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% -934 -6.1% -411 -2.8% -56 -8.4% 560 87.0%
Exclusive Metrics Diff for Current Function89 9.5% 47 11.4% 0 0.0% 0 0.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% -934 -100.0% -411 -100.0% -56 -100.0% 560 100.0%
Child functions
unserialize0 N/A% -1,029 -110.2% -476 -115.8% -56 -100.0% 528 94.3%
explode0 N/A% 6 0.6% 11 2.7% 0 0.0% 0 0.0%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 0 0.0% 7 1.7% 0 0.0% 32 5.7%