Diff Report
Run #51ec66a5a877d: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec623000e0c: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #51ec66a5a877dRun #51ec623000e0cDiffDiff%
Number of Function Calls141 141 0 0.0%
Incl. Wall Time (microsec)18,833 19,229 396 2.1%
Incl. Wall Time (microsec) per call 134 136 3 2.1%
Excl. Wall Time (microsec)1,644 1,681 37 2.3%
Incl. CPU (microsecs)17,580 17,754 174 1.0%
Incl. CPU (microsecs) per call 125 126 1 1.0%
Excl. CPU (microsec)1,506 1,511 5 0.3%
Incl. MemUse (bytes)2,469,472 2,469,008 -464 -0.0%
Incl. MemUse (bytes) per call 17,514 17,511 -3 -0.0%
Excl. MemUse (bytes)-511,696 -511,680 16 0.0%
Incl. PeakMemUse (bytes)3,094,792 3,090,824 -3,968 -0.1%
Incl. PeakMemUse (bytes) per call 21,949 21,921 -28 -0.1%
Excl. PeakMemUse (bytes)8,600 8,624 24 0.3%

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% 396 16.9% 174 5.1% -464 -0.6% -3,968 -5.5%
Exclusive Metrics Diff for Current Function37 9.3% 5 2.9% 16 3.4% 24 0.6%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 396 100.0% 174 100.0% -464 -100.0% -3,968 -100.0%
Child functions
unserialize0 N/A% 254 64.1% 136 78.2% -368 -79.3% -2,696 -67.9%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 106 26.8% 24 13.8% -88 -19.0% -1,216 -30.6%
explode0 N/A% -1 -0.3% 9 5.2% -24 -5.2% -80 -2.0%