Diff Report
Run #518eefcaea15f: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #518eee9367b5d: XHProf Run (Namespace=drupal-perf-cottser)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #518eefcaea15fRun #518eee9367b5dDiffDiff%
Number of Function Calls72 72 0 0.0%
Incl. Wall Time (microsec)21,188 20,891 -297 -1.4%
Incl. Wall Time (microsec) per call 294 290 -4 -1.4%
Excl. Wall Time (microsec)1,071 1,096 25 2.3%
Incl. CPU (microsecs)17,458 17,044 -414 -2.4%
Incl. CPU (microsecs) per call 242 237 -6 -2.4%
Excl. CPU (microsec)985 991 6 0.6%
Incl. MemUse (bytes)1,545,920 1,545,920 0 0.0%
Incl. MemUse (bytes) per call 21,471 21,471 0 0.0%
Excl. MemUse (bytes)-197,352 -197,352 0 0.0%
Incl. PeakMemUse (bytes)2,147,464 2,147,464 0 0.0%
Incl. PeakMemUse (bytes) per call 29,826 29,826 0 0.0%
Excl. PeakMemUse (bytes)6,784 6,784 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% -297 -450.0% -414 -47.2% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function25 8.4% 6 1.4% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% -297 -100.0% -414 -100.0% 0 N/A% 0 N/A%
Child functions
unserialize0 N/A% -176 -59.3% -331 -80.0% 0 N/A% 0 N/A%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -136 -45.8% -82 -19.8% 0 N/A% 0 N/A%
explode0 N/A% -10 -3.4% -7 -1.7% 0 N/A% 0 N/A%