Diff Report
Run #519c0ad3d3949: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519c0a514701f: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519c0ad3d3949Run #519c0a514701fDiffDiff%
Number of Function Calls82 82 0 0.0%
Incl. Wall Time (microsec)30,853 30,707 -146 -0.5%
Incl. Wall Time (microsec) per call 376 374 -2 -0.5%
Excl. Wall Time (microsec)1,759 1,787 28 1.6%
Incl. CPU (microsecs)25,258 25,407 149 0.6%
Incl. CPU (microsecs) per call 308 310 2 0.6%
Excl. CPU (microsec)1,637 1,661 24 1.5%
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)-231,860 -231,864 -4 -0.0%
Incl. PeakMemUse (bytes)1,242,320 1,242,424 104 0.0%
Incl. PeakMemUse (bytes) per call 15,150 15,152 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 Function28 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%