Diff Report
Run #539203c57074d: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #539201f8938f4: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #539203c57074dRun #539201f8938f4DiffDiff%
Number of Function Calls52 52 0 0.0%
Incl. Wall Time (microsec)26,644 27,029 385 1.4%
Incl. Wall Time (microsec) per call 512 520 7 1.4%
Excl. Wall Time (microsec)1,022 1,072 50 4.9%
Incl. CPU (microsecs)21,744 22,303 559 2.6%
Incl. CPU (microsecs) per call 418 429 11 2.6%
Excl. CPU (microsec)898 950 52 5.8%
Incl. MemUse (bytes)1,406,688 1,406,688 0 0.0%
Incl. MemUse (bytes) per call 27,052 27,052 0 0.0%
Excl. MemUse (bytes)-382,760 -382,760 0 0.0%
Incl. PeakMemUse (bytes)1,849,024 1,849,024 0 0.0%
Incl. PeakMemUse (bytes) per call 35,558 35,558 0 0.0%
Excl. PeakMemUse (bytes)2,284 2,284 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% 385 155.9% 559 114.3% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function50 13.0% 52 9.3% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 385 100.0% 559 100.0% 0 N/A% 0 N/A%
Child functions
unserialize0 N/A% 450 116.9% 359 64.2% 0 N/A% 0 N/A%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -107 -27.8% 157 28.1% 0 N/A% 0 N/A%
explode0 N/A% -8 -2.1% -9 -1.6% 0 N/A% 0 N/A%
Symfony\Component\ClassLoader\ApcClassLoader::loadClass0 N/A% 0 0.0% 0 0.0% 0 N/A% 0 N/A%