Diff Report
Run #52e4a1c03557c: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #52e4a1fd8a982: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #52e4a1c03557cRun #52e4a1fd8a982DiffDiff%
Number of Function Calls63 63 0 0.0%
Incl. Wall Time (microsec)7,723 7,600 -123 -1.6%
Incl. Wall Time (microsec) per call 123 121 -2 -1.6%
Excl. Wall Time (microsec)679 695 16 2.4%
Incl. CPU (microsecs)6,798 6,692 -106 -1.6%
Incl. CPU (microsecs) per call 108 106 -2 -1.6%
Excl. CPU (microsec)600 605 5 0.8%
Incl. MemUse (bytes)1,378,000 1,378,000 0 0.0%
Incl. MemUse (bytes) per call 21,873 21,873 0 0.0%
Excl. MemUse (bytes)-199,360 -199,360 0 0.0%
Incl. PeakMemUse (bytes)1,826,400 1,826,400 0 0.0%
Incl. PeakMemUse (bytes) per call 28,990 28,990 0 0.0%
Excl. PeakMemUse (bytes)7,352 7,352 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% -123 -30.8% -106 -28.4% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function16 13.0% 5 4.7% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% -123 -100.0% -106 -100.0% 0 N/A% 0 N/A%
Child functions
unserialize0 N/A% -129 -104.9% -118 -111.3% 0 N/A% 0 N/A%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -8 -6.5% 11 10.4% 0 N/A% 0 N/A%
Symfony\Component\ClassLoader\ApcClassLoader::loadClass0 N/A% -2 -1.6% -2 -1.9% 0 N/A% 0 N/A%
explode0 N/A% 0 0.0% -2 -1.9% 0 N/A% 0 N/A%