Diff Report
Run #534ad8dec7444: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #534ad972c8c0d: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #534ad8dec7444Run #534ad972c8c0dDiffDiff%
Number of Function Calls132 132 0 0.0%
Incl. Wall Time (microsec)46,722 47,218 496 1.1%
Incl. Wall Time (microsec) per call 354 358 4 1.1%
Excl. Wall Time (microsec)2,724 2,561 -163 -6.0%
Incl. CPU (microsecs)40,361 40,397 36 0.1%
Incl. CPU (microsecs) per call 306 306 0 0.1%
Excl. CPU (microsec)2,304 2,313 9 0.4%
Incl. MemUse (bytes)1,893,500 1,893,500 0 0.0%
Incl. MemUse (bytes) per call 14,345 14,345 0 0.0%
Excl. MemUse (bytes)-472,400 -472,400 0 0.0%
Incl. PeakMemUse (bytes)2,509,800 2,509,800 0 0.0%
Incl. PeakMemUse (bytes) per call 19,014 19,014 0 0.0%
Excl. PeakMemUse (bytes)3,312 3,312 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% 496 34.1% 36 6.1% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function-163 -32.9% 9 25.0% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 496 100.0% 36 100.0% 0 N/A% 0 N/A%
Child functions
unserialize0 N/A% 399 80.4% -198 -550.0% 0 N/A% 0 N/A%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 287 57.9% 252 700.0% 0 N/A% 0 N/A%
Symfony\Component\ClassLoader\ApcClassLoader::loadClass0 N/A% -17 -3.4% -17 -47.2% 0 N/A% 0 N/A%
explode0 N/A% -10 -2.0% -10 -27.8% 0 N/A% 0 N/A%