Diff Report
Run #519fc956834f6: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519fc98bf3bad: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519fc956834f6Run #519fc98bf3badDiffDiff%
Number of Function Calls88 88 0 0.0%
Incl. Wall Time (microsec)15,066 15,201 135 0.9%
Incl. Wall Time (microsec) per call 171 173 2 0.9%
Excl. Wall Time (microsec)1,113 1,157 44 4.0%
Incl. CPU (microsecs)12,000 20,002 8,002 66.7%
Incl. CPU (microsecs) per call 136 227 91 66.7%
Excl. CPU (microsec)4,000 4,001 1 0.0%
Incl. MemUse (bytes)1,755,448 1,755,448 0 0.0%
Incl. MemUse (bytes) per call 19,948 19,948 0 0.0%
Excl. MemUse (bytes)-231,792 -231,792 0 0.0%
Incl. PeakMemUse (bytes)2,397,656 2,397,656 0 0.0%
Incl. PeakMemUse (bytes) per call 27,246 27,246 0 0.0%
Excl. PeakMemUse (bytes)10,944 10,944 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% 135 113.4% 8,002 800200.0% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function44 32.6% 1 0.0% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 135 100.0% 8,002 100.0% 0 N/A% 0 N/A%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 341 252.6% 4,000 50.0% 0 N/A% 0 N/A%
unserialize0 N/A% -248 -183.7% 4,001 50.0% 0 N/A% 0 N/A%
explode0 N/A% -2 -1.5% 0 0.0% 0 N/A% 0 N/A%