Diff Report
Run #517896dc57c6e: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #5178989df1d0f: XHProf Run (Namespace=drupal-perf-cottser)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #517896dc57c6eRun #5178989df1d0fDiffDiff%
Number of Function Calls127 127 0 0.0%
Incl. Wall Time (microsec)24,859 25,113 254 1.0%
Incl. Wall Time (microsec) per call 196 198 2 1.0%
Excl. Wall Time (microsec)1,579 1,576 -3 -0.2%
Incl. CPU (microsecs)20,858 21,368 510 2.4%
Incl. CPU (microsecs) per call 164 168 4 2.4%
Excl. CPU (microsec)1,438 1,447 9 0.6%
Incl. MemUse (bytes)1,895,520 1,895,464 -56 -0.0%
Incl. MemUse (bytes) per call 14,925 14,925 -0 -0.0%
Excl. MemUse (bytes)-422,840 -422,896 -56 -0.0%
Incl. PeakMemUse (bytes)2,501,120 2,501,320 200 0.0%
Incl. PeakMemUse (bytes) per call 19,694 19,695 2 0.0%
Excl. PeakMemUse (bytes)7,360 7,360 0 0.0%

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% 254 6.3% 510 10.4% -56 -0.9% 200 3.4%
Exclusive Metrics Diff for Current Function-3 -1.2% 9 1.8% -56 -100.0% 0 0.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 254 100.0% 510 100.0% -56 -100.0% 200 100.0%
Child functions
unserialize0 N/A% 185 72.8% 434 85.1% -16 -28.6% 88 44.0%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 79 31.1% 77 15.1% 16 28.6% 112 56.0%
explode0 N/A% -7 -2.8% -10 -2.0% 0 0.0% 0 0.0%