Diff Report
Run #539205a48c548: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #539206513e72e: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #539205a48c548Run #539206513e72eDiffDiff%
Number of Function Calls67 67 0 0.0%
Incl. Wall Time (microsec)33,493 33,258 -235 -0.7%
Incl. Wall Time (microsec) per call 500 496 -4 -0.7%
Excl. Wall Time (microsec)1,344 1,317 -27 -2.0%
Incl. CPU (microsecs)26,642 26,531 -111 -0.4%
Incl. CPU (microsecs) per call 398 396 -2 -0.4%
Excl. CPU (microsec)1,219 1,201 -18 -1.5%
Incl. MemUse (bytes)1,279,376 1,279,376 0 0.0%
Incl. MemUse (bytes) per call 19,095 19,095 0 0.0%
Excl. MemUse (bytes)-340,460 -340,460 0 0.0%
Incl. PeakMemUse (bytes)1,635,268 1,635,268 0 0.0%
Incl. PeakMemUse (bytes) per call 24,407 24,407 0 0.0%
Excl. PeakMemUse (bytes)2,236 2,236 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% -235 -25.8% -111 -31.9% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function-27 -11.5% -18 -16.2% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% -235 -100.0% -111 -100.0% 0 N/A% 0 N/A%
Child functions
unserialize0 N/A% -173 -73.6% 59 53.2% 0 N/A% 0 N/A%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -36 -15.3% -145 -130.6% 0 N/A% 0 N/A%
Symfony\Component\ClassLoader\ApcClassLoader::loadClass0 N/A% 1 0.4% 1 0.9% 0 N/A% 0 N/A%
explode0 N/A% 0 0.0% -8 -7.2% 0 N/A% 0 N/A%