Diff Report
Run #518081a41c05e: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #518080a5ca60d: XHProf Run (Namespace=drupal-perf-cottser)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #518081a41c05eRun #518080a5ca60dDiffDiff%
Number of Function Calls59 59 0 0.0%
Incl. Wall Time (microsec)24,005 24,041 36 0.1%
Incl. Wall Time (microsec) per call 407 407 1 0.1%
Excl. Wall Time (microsec)904 886 -18 -2.0%
Incl. CPU (microsecs)19,712 20,016 304 1.5%
Incl. CPU (microsecs) per call 334 339 5 1.5%
Excl. CPU (microsec)822 813 -9 -1.1%
Incl. MemUse (bytes)1,530,432 1,531,592 1,160 0.1%
Incl. MemUse (bytes) per call 25,940 25,959 20 0.1%
Excl. MemUse (bytes)-157,896 -158,088 -192 -0.1%
Incl. PeakMemUse (bytes)1,997,368 1,996,576 -792 -0.0%
Incl. PeakMemUse (bytes) per call 33,854 33,840 -13 -0.0%
Excl. PeakMemUse (bytes)6,080 6,120 40 0.7%

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% 36 3.0% 304 23.5% 1,160 26.9% -792 -18.3%
Exclusive Metrics Diff for Current Function-18 -50.0% -9 -3.0% -192 -16.6% 40 5.1%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 36 100.0% 304 100.0% 1,160 100.0% -792 -100.0%
Child functions
unserialize0 N/A% 121 336.1% 243 79.9% 1,296 111.7% -600 -75.8%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -65 -180.6% 66 21.7% 48 4.1% -240 -30.3%
explode0 N/A% -2 -5.6% 4 1.3% 8 0.7% 8 1.0%