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

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #51ec623000e0cRun #51ec66a5a877dDiffDiff%
Number of Function Calls141 141 0 0.0%
Incl. Wall Time (microsec)19,229 18,833 -396 -2.1%
Incl. Wall Time (microsec) per call 136 134 -3 -2.1%
Excl. Wall Time (microsec)1,681 1,644 -37 -2.2%
Incl. CPU (microsecs)17,754 17,580 -174 -1.0%
Incl. CPU (microsecs) per call 126 125 -1 -1.0%
Excl. CPU (microsec)1,511 1,506 -5 -0.3%
Incl. MemUse (bytes)2,469,008 2,469,472 464 0.0%
Incl. MemUse (bytes) per call 17,511 17,514 3 0.0%
Excl. MemUse (bytes)-511,680 -511,696 -16 -0.0%
Incl. PeakMemUse (bytes)3,090,824 3,094,792 3,968 0.1%
Incl. PeakMemUse (bytes) per call 21,921 21,949 28 0.1%
Excl. PeakMemUse (bytes)8,624 8,600 -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 Function-37 -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%