Diff Report
Run #517c1770a3264: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #517c1836bbd84: XHProf Run (Namespace=drupal-perf-cottser)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #517c1770a3264Run #517c1836bbd84DiffDiff%
Number of Function Calls58 58 0 0.0%
Incl. Wall Time (microsec)22,958 24,000 1,042 4.5%
Incl. Wall Time (microsec) per call 396 414 18 4.5%
Excl. Wall Time (microsec)880 867 -13 -1.5%
Incl. CPU (microsecs)18,992 19,917 925 4.9%
Incl. CPU (microsecs) per call 327 343 16 4.9%
Excl. CPU (microsec)792 786 -6 -0.8%
Incl. MemUse (bytes)1,457,944 1,456,768 -1,176 -0.1%
Incl. MemUse (bytes) per call 25,137 25,117 -20 -0.1%
Excl. MemUse (bytes)-163,680 -163,536 144 0.1%
Incl. PeakMemUse (bytes)1,915,256 1,915,536 280 0.0%
Incl. PeakMemUse (bytes) per call 33,022 33,026 5 0.0%
Excl. PeakMemUse (bytes)6,064 5,960 -104 -1.7%

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% 1,042 65.7% 925 60.8% -1,176 -19.4% 280 4.6%
Exclusive Metrics Diff for Current Function-13 -1.2% -6 -0.6% 144 12.2% -104 -37.1%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 1,042 100.0% 925 100.0% -1,176 -100.0% 280 100.0%
Child functions
unserialize0 N/A% 702 67.4% 830 89.7% -1,320 -112.2% 144 51.4%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 354 34.0% 104 11.2% 0 0.0% 240 85.7%
explode0 N/A% -1 -0.1% -3 -0.3% 0 0.0% 0 0.0%