Diff Report
Run #51ec517fc2424: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec51f5849d9: 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 #51ec517fc2424Run #51ec51f5849d9DiffDiff%
Number of Function Calls124 124 0 0.0%
Incl. Wall Time (microsec)19,894 19,104 -790 -4.0%
Incl. Wall Time (microsec) per call 160 154 -6 -4.0%
Excl. Wall Time (microsec)1,546 1,552 6 0.4%
Incl. CPU (microsecs)18,097 17,782 -315 -1.7%
Incl. CPU (microsecs) per call 146 143 -3 -1.7%
Excl. CPU (microsec)1,417 1,447 30 2.1%
Incl. MemUse (bytes)2,479,960 2,479,960 0 0.0%
Incl. MemUse (bytes) per call 20,000 20,000 0 0.0%
Excl. MemUse (bytes)-369,728 -369,728 0 0.0%
Incl. PeakMemUse (bytes)2,863,640 2,863,640 0 0.0%
Incl. PeakMemUse (bytes) per call 23,094 23,094 0 0.0%
Excl. PeakMemUse (bytes)8,496 8,496 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% -790 -27.0% -315 -10.0% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function6 0.8% 30 9.5% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% -790 -100.0% -315 -100.0% 0 N/A% 0 N/A%
Child functions
unserialize0 N/A% -577 -73.0% -297 -94.3% 0 N/A% 0 N/A%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -221 -28.0% -48 -15.2% 0 N/A% 0 N/A%
explode0 N/A% 2 0.3% 0 0.0% 0 N/A% 0 N/A%