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

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519ff693b4ca2Run #519ff79b9e81aDiffDiff%
Number of Function Calls73 73 0 0.0%
Incl. Wall Time (microsec)26,286 26,459 173 0.7%
Incl. Wall Time (microsec) per call 360 362 2 0.7%
Excl. Wall Time (microsec)1,302 1,317 15 1.2%
Incl. CPU (microsecs)25,821 25,998 177 0.7%
Incl. CPU (microsecs) per call 354 356 2 0.7%
Excl. CPU (microsec)1,195 1,221 26 2.2%
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 Function15 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%