Diff Report
Run #519c0a514701f: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519c0a965645d: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519c0a514701fRun #519c0a965645dDiffDiff%
Number of Function Calls82 82 0 0.0%
Incl. Wall Time (microsec)30,707 30,711 4 0.0%
Incl. Wall Time (microsec) per call 374 375 0 0.0%
Excl. Wall Time (microsec)1,787 1,762 -25 -1.4%
Incl. CPU (microsecs)25,407 24,915 -492 -1.9%
Incl. CPU (microsecs) per call 310 304 -6 -1.9%
Excl. CPU (microsec)1,661 1,612 -49 -3.0%
Incl. MemUse (bytes)886,332 886,332 0 0.0%
Incl. MemUse (bytes) per call 10,809 10,809 0 0.0%
Excl. MemUse (bytes)-231,864 -231,864 0 0.0%
Incl. PeakMemUse (bytes)1,242,424 1,242,424 0 0.0%
Incl. PeakMemUse (bytes) per call 15,152 15,152 0 0.0%
Excl. PeakMemUse (bytes)4,980 4,980 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% 4 0.3% -492 -51.6% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function-25 -625.0% -49 -10.0% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 4 100.0% -492 -100.0% 0 N/A% 0 N/A%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 117 2925.0% -127 -25.8% 0 N/A% 0 N/A%
unserialize0 N/A% -85 -2125.0% -313 -63.6% 0 N/A% 0 N/A%
explode0 N/A% -3 -75.0% -3 -0.6% 0 N/A% 0 N/A%