Diff Report
Run #519c0a514701f: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519c0ad3d3949: 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 #519c0ad3d3949DiffDiff%
Number of Function Calls82 82 0 0.0%
Incl. Wall Time (microsec)30,707 30,853 146 0.5%
Incl. Wall Time (microsec) per call 374 376 2 0.5%
Excl. Wall Time (microsec)1,787 1,759 -28 -1.6%
Incl. CPU (microsecs)25,407 25,258 -149 -0.6%
Incl. CPU (microsecs) per call 310 308 -2 -0.6%
Excl. CPU (microsec)1,661 1,637 -24 -1.4%
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 -231,860 4 0.0%
Incl. PeakMemUse (bytes)1,242,424 1,242,320 -104 -0.0%
Incl. PeakMemUse (bytes) per call 15,152 15,150 -1 -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% 146 7.9% -149 -4.3% 0 0.0% -104 -0.0%
Exclusive Metrics Diff for Current Function-28 -19.2% -24 -16.1% 4 N/A% 0 0.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 146 100.0% -149 -100.0% 0 N/A% -104 -100.0%
Child functions
unserialize0 N/A% 287 196.6% -71 -47.7% -4 N/A% -104 -100.0%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -111 -76.0% -54 -36.2% 0 N/A% 0 0.0%
explode0 N/A% -2 -1.4% 0 0.0% 0 N/A% 0 0.0%