Diff Report
Run #519eb5243677d: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519eb486908e7: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519eb5243677dRun #519eb486908e7DiffDiff%
Number of Function Calls112 112 0 0.0%
Incl. Wall Time (microsec)38,017 37,838 -179 -0.5%
Incl. Wall Time (microsec) per call 339 338 -2 -0.5%
Excl. Wall Time (microsec)2,421 2,417 -4 -0.2%
Incl. CPU (microsecs)31,828 32,107 279 0.9%
Incl. CPU (microsecs) per call 284 287 2 0.9%
Excl. CPU (microsec)2,273 2,241 -32 -1.4%
Incl. MemUse (bytes)1,027,756 1,027,756 0 0.0%
Incl. MemUse (bytes) per call 9,176 9,176 0 0.0%
Excl. MemUse (bytes)-289,988 -289,988 0 0.0%
Incl. PeakMemUse (bytes)1,469,124 1,469,124 0 0.0%
Incl. PeakMemUse (bytes) per call 13,117 13,117 0 0.0%
Excl. PeakMemUse (bytes)5,608 5,608 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% -179 -9.2% 279 27.8% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function-4 -2.2% -32 -11.5% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% -179 -100.0% 279 100.0% 0 N/A% 0 N/A%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -168 -93.9% 29 10.4% 0 N/A% 0 N/A%
unserialize0 N/A% -10 -5.6% 284 101.8% 0 N/A% 0 N/A%
explode0 N/A% 3 1.7% -2 -0.7% 0 N/A% 0 N/A%