Diff Report
Run #51ec5ca916d7d: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec5d631cb28: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #51ec5ca916d7dRun #51ec5d631cb28DiffDiff%
Number of Function Calls105 105 0 0.0%
Incl. Wall Time (microsec)18,408 19,110 702 3.8%
Incl. Wall Time (microsec) per call 175 182 7 3.8%
Excl. Wall Time (microsec)1,323 1,328 5 0.4%
Incl. CPU (microsecs)17,381 17,635 254 1.5%
Incl. CPU (microsecs) per call 166 168 2 1.5%
Excl. CPU (microsec)1,213 1,211 -2 -0.2%
Incl. MemUse (bytes)2,791,120 2,791,376 256 0.0%
Incl. MemUse (bytes) per call 26,582 26,585 2 0.0%
Excl. MemUse (bytes)-392,912 -393,040 -128 -0.0%
Incl. PeakMemUse (bytes)3,341,632 3,334,800 -6,832 -0.2%
Incl. PeakMemUse (bytes) per call 31,825 31,760 -65 -0.2%
Excl. PeakMemUse (bytes)9,112 9,136 24 0.3%

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% 702 8.8% 254 2.8% 256 0.4% -6,832 -10.3%
Exclusive Metrics Diff for Current Function5 0.7% -2 -0.8% -128 -50.0% 24 0.4%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 702 100.0% 254 100.0% 256 100.0% -6,832 -100.0%
Child functions
unserialize0 N/A% 391 55.7% 103 40.6% 408 159.4% -4,328 -63.3%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 302 43.0% 155 61.0% -24 -9.4% -2,528 -37.0%
explode0 N/A% 4 0.6% -2 -0.8% 0 0.0% 0 0.0%