Diff Report
Run #519d44ffb3845: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519d45fd795a4: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem@1

Drupal\Core\Cache\DatabaseBackend::prepareItem@1Run #519d44ffb3845Run #519d45fd795a4DiffDiff%
Number of Function Calls7 7 0 0.0%
Incl. Wall Time (microsec)1,077 1,205 128 11.9%
Incl. Wall Time (microsec) per call 154 172 18 11.9%
Excl. Wall Time (microsec)158 165 7 4.4%
Incl. CPU (microsecs)921 1,032 111 12.1%
Incl. CPU (microsecs) per call 132 147 16 12.1%
Excl. CPU (microsec)143 154 11 7.7%
Incl. MemUse (bytes)38,592 38,592 0 0.0%
Incl. MemUse (bytes) per call 5,513 5,513 0 0.0%
Excl. MemUse (bytes)-11,528 -11,528 0 0.0%
Incl. PeakMemUse (bytes)62,324 62,324 0 0.0%
Incl. PeakMemUse (bytes) per call 8,903 8,903 0 0.0%
Excl. PeakMemUse (bytes)640 640 0 0.0%

Parent/Child Regression/Improvement report for Drupal\Core\Cache\DatabaseBackend::prepareItem@1 [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::prepareItem@10 N/A% 128 0.2% 111 0.2% 0 0.0% 0 0.0%
Exclusive Metrics Diff for Current Function7 5.5% 11 9.9% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple@10 N/A% 128 100.0% 111 100.0% 0 N/A% 0 N/A%
Child functions
unserialize@10 N/A% 83 64.8% 83 74.8% 0 N/A% 0 N/A%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 38 29.7% 17 15.3% 0 N/A% 0 N/A%
explode0 N/A% 0 0.0% 0 0.0% 0 N/A% 0 N/A%