Diff Report
Run #519eb7f35533b: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519eb7a1537f7: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519eb7f35533bRun #519eb7a1537f7DiffDiff%
Number of Function Calls112 112 0 0.0%
Incl. Wall Time (microsec)37,944 38,425 481 1.3%
Incl. Wall Time (microsec) per call 339 343 4 1.3%
Excl. Wall Time (microsec)2,404 2,479 75 3.1%
Incl. CPU (microsecs)32,023 32,204 181 0.6%
Incl. CPU (microsecs) per call 286 288 2 0.6%
Excl. CPU (microsec)2,232 2,310 78 3.5%
Incl. MemUse (bytes)1,027,756 1,027,756 0 0.0%
Incl. MemUse (bytes) per call 9,176 9,176 0 0.0%
Excl. MemUse (bytes)-289,988 -289,988 0 0.0%
Incl. PeakMemUse (bytes)1,469,124 1,469,124 0 0.0%
Incl. PeakMemUse (bytes) per call 13,117 13,117 0 0.0%
Excl. PeakMemUse (bytes)5,608 5,608 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% 481 16.5% 181 11.9% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function75 15.6% 78 43.1% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 481 100.0% 181 100.0% 0 N/A% 0 N/A%
Child functions
unserialize0 N/A% 368 76.5% 165 91.2% 0 N/A% 0 N/A%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 38 7.9% -57 -31.5% 0 N/A% 0 N/A%
explode0 N/A% 0 0.0% -5 -2.8% 0 N/A% 0 N/A%