Diff Report
Run #52d4b590e6e18: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #52d4b60c154f6: XHProf Run (Namespace=drupal-perf-cottser)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #52d4b590e6e18Run #52d4b60c154f6DiffDiff%
Number of Function Calls80 78 -2 -2.5%
Incl. Wall Time (microsec)8,178 7,991 -187 -2.3%
Incl. Wall Time (microsec) per call 102 102 0 0.2%
Excl. Wall Time (microsec)792 771 -21 -2.7%
Incl. CPU (microsecs)7,440 7,255 -185 -2.5%
Incl. CPU (microsecs) per call 93 93 0 0.0%
Excl. CPU (microsec)706 684 -22 -3.1%
Incl. MemUse (bytes)1,533,328 1,527,752 -5,576 -0.4%
Incl. MemUse (bytes) per call 19,167 19,587 420 2.2%
Excl. MemUse (bytes)-225,176 -223,736 1,440 0.6%
Incl. PeakMemUse (bytes)2,079,200 2,055,928 -23,272 -1.1%
Incl. PeakMemUse (bytes) per call 25,990 26,358 368 1.4%
Excl. PeakMemUse (bytes)7,808 7,616 -192 -2.5%

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::prepareItem-2 -33.3% -187 -7.0% -185 -8.0% -5,576 -4.7% -23,272 -19.6%
Exclusive Metrics Diff for Current Function-21 -11.2% -22 -11.9% 1,440 25.8% -192 -0.8%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple-2 -100.0% -187 -100.0% -185 -100.0% -5,576 -100.0% -23,272 -100.0%
Child functions
unserialize-2 -50.0% -92 -49.2% -96 -51.9% -6,040 -108.3% -22,048 -94.7%
Drupal\Core\Cache\DatabaseBackend::checksumTags-2 -50.0% -74 -39.6% -62 -33.5% -984 -17.6% -1,032 -4.4%
explode0 0.0% 0 0.0% -5 -2.7% 8 0.1% 0 0.0%