Diff Report
Run #517d750163e11: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #517d7587ada9c: XHProf Run (Namespace=drupal-perf-cottser)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #517d750163e11Run #517d7587ada9cDiffDiff%
Number of Function Calls58 58 0 0.0%
Incl. Wall Time (microsec)22,933 22,591 -342 -1.5%
Incl. Wall Time (microsec) per call 395 390 -6 -1.5%
Excl. Wall Time (microsec)864 839 -25 -2.9%
Incl. CPU (microsecs)18,652 18,844 192 1.0%
Incl. CPU (microsecs) per call 322 325 3 1.0%
Excl. CPU (microsec)790 768 -22 -2.8%
Incl. MemUse (bytes)1,459,904 1,459,992 88 0.0%
Incl. MemUse (bytes) per call 25,171 25,172 2 0.0%
Excl. MemUse (bytes)-163,600 -163,648 -48 -0.0%
Incl. PeakMemUse (bytes)1,918,512 1,921,264 2,752 0.1%
Incl. PeakMemUse (bytes) per call 33,078 33,125 47 0.1%
Excl. PeakMemUse (bytes)6,080 5,992 -88 -1.4%

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% -342 -4.2% 192 2.0% 88 0.8% 2,752 24.9%
Exclusive Metrics Diff for Current Function-25 -7.3% -22 -11.5% -48 -54.5% -88 -3.2%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% -342 -100.0% 192 100.0% 88 100.0% 2,752 100.0%
Child functions
unserialize0 N/A% -499 -145.9% 166 86.5% 168 190.9% 2,632 95.6%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 184 53.8% 50 26.0% -40 -45.5% 208 7.6%
explode0 N/A% -2 -0.6% -2 -1.0% 8 9.1% 0 0.0%