Diff Report
Run #519ff79b9e81a: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519ff693b4ca2: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519ff79b9e81aRun #519ff693b4ca2DiffDiff%
Number of Function Calls73 73 0 0.0%
Incl. Wall Time (microsec)26,459 26,286 -173 -0.7%
Incl. Wall Time (microsec) per call 362 360 -2 -0.7%
Excl. Wall Time (microsec)1,317 1,302 -15 -1.1%
Incl. CPU (microsecs)25,998 25,821 -177 -0.7%
Incl. CPU (microsecs) per call 356 354 -2 -0.7%
Excl. CPU (microsec)1,221 1,195 -26 -2.1%
Incl. MemUse (bytes)1,451,640 1,451,640 0 0.0%
Incl. MemUse (bytes) per call 19,885 19,885 0 0.0%
Excl. MemUse (bytes)-179,752 -179,752 0 0.0%
Incl. PeakMemUse (bytes)1,987,456 1,987,456 0 0.0%
Incl. PeakMemUse (bytes) per call 27,225 27,225 0 0.0%
Excl. PeakMemUse (bytes)5,592 5,592 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% -173 -30.6% -177 -28.0% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function-15 -8.7% -26 -14.7% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% -173 -100.0% -177 -100.0% 0 N/A% 0 N/A%
Child functions
unserialize0 N/A% -124 -71.7% -129 -72.9% 0 N/A% 0 N/A%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -35 -20.2% -24 -13.6% 0 N/A% 0 N/A%
explode0 N/A% 1 0.6% 2 1.1% 0 N/A% 0 N/A%