Diff Report
Run #51ec6582d0962: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec623000e0c: XHProf Run (Namespace=drupal-perf-drupalcon)
Tip
Click a function name below to drill down.

Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #51ec6582d0962Run #51ec623000e0cDiffDiff%
Number of Function Calls141 141 0 0.0%
Incl. Wall Time (microsec)18,761 19,229 468 2.5%
Incl. Wall Time (microsec) per call 133 136 3 2.5%
Excl. Wall Time (microsec)1,653 1,681 28 1.7%
Incl. CPU (microsecs)17,379 17,754 375 2.2%
Incl. CPU (microsecs) per call 123 126 3 2.2%
Excl. CPU (microsec)1,521 1,511 -10 -0.7%
Incl. MemUse (bytes)2,469,008 2,469,008 0 0.0%
Incl. MemUse (bytes) per call 17,511 17,511 0 0.0%
Excl. MemUse (bytes)-511,680 -511,680 0 0.0%
Incl. PeakMemUse (bytes)3,090,824 3,090,824 0 0.0%
Incl. PeakMemUse (bytes) per call 21,921 21,921 0 0.0%
Excl. PeakMemUse (bytes)8,624 8,624 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% 468 18.2% 375 31.2% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function28 6.0% -10 -2.7% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 468 100.0% 375 100.0% 0 N/A% 0 N/A%
Child functions
unserialize0 N/A% 409 87.4% 396 105.6% 0 N/A% 0 N/A%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 31 6.6% -14 -3.7% 0 N/A% 0 N/A%
explode0 N/A% 0 0.0% 3 0.8% 0 N/A% 0 N/A%