Diff Report
Run #51ec5ca916d7d: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec5cfb002ea: 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 #51ec5cfb002eaDiffDiff%
Number of Function Calls105 105 0 0.0%
Incl. Wall Time (microsec)18,408 18,796 388 2.1%
Incl. Wall Time (microsec) per call 175 179 4 2.1%
Excl. Wall Time (microsec)1,323 1,295 -28 -2.1%
Incl. CPU (microsecs)17,381 17,198 -183 -1.1%
Incl. CPU (microsecs) per call 166 164 -2 -1.1%
Excl. CPU (microsec)1,213 1,204 -9 -0.7%
Incl. MemUse (bytes)2,791,120 2,791,120 0 0.0%
Incl. MemUse (bytes) per call 26,582 26,582 0 0.0%
Excl. MemUse (bytes)-392,912 -392,912 0 0.0%
Incl. PeakMemUse (bytes)3,341,632 3,341,632 0 0.0%
Incl. PeakMemUse (bytes) per call 31,825 31,825 0 0.0%
Excl. PeakMemUse (bytes)9,112 9,112 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% 388 24.8% -183 -186.7% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function-28 -7.2% -9 -4.9% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 388 100.0% -183 -100.0% 0 N/A% 0 N/A%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 414 106.7% 23 12.6% 0 N/A% 0 N/A%
explode0 N/A% 2 0.5% 2 1.1% 0 N/A% 0 N/A%
unserialize0 N/A% 0 0.0% -199 -108.7% 0 N/A% 0 N/A%