Diff Report
Run #51ec51f5849d9: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec517fc2424: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #51ec51f5849d9Run #51ec517fc2424DiffDiff%
Number of Function Calls124 124 0 0.0%
Incl. Wall Time (microsec)19,104 19,894 790 4.1%
Incl. Wall Time (microsec) per call 154 160 6 4.1%
Excl. Wall Time (microsec)1,552 1,546 -6 -0.4%
Incl. CPU (microsecs)17,782 18,097 315 1.8%
Incl. CPU (microsecs) per call 143 146 3 1.8%
Excl. CPU (microsec)1,447 1,417 -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 Function-6 -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%