Diff Report
Run #51ec52a09990a: 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 #51ec52a09990aRun #51ec517fc2424DiffDiff%
Number of Function Calls124 124 0 0.0%
Incl. Wall Time (microsec)19,096 19,894 798 4.2%
Incl. Wall Time (microsec) per call 154 160 6 4.2%
Excl. Wall Time (microsec)1,543 1,546 3 0.2%
Incl. CPU (microsecs)17,742 18,097 355 2.0%
Incl. CPU (microsecs) per call 143 146 3 2.0%
Excl. CPU (microsec)1,406 1,417 11 0.8%
Incl. MemUse (bytes)2,480,048 2,479,960 -88 -0.0%
Incl. MemUse (bytes) per call 20,000 20,000 -1 -0.0%
Excl. MemUse (bytes)-370,064 -369,728 336 0.1%
Incl. PeakMemUse (bytes)2,849,824 2,863,640 13,816 0.5%
Incl. PeakMemUse (bytes) per call 22,982 23,094 111 0.5%
Excl. PeakMemUse (bytes)8,440 8,496 56 0.7%

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% 798 19.5% 355 8.3% -88 -0.4% 13,816 60.1%
Exclusive Metrics Diff for Current Function3 0.4% 11 3.1% 336 381.8% 56 0.4%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 798 100.0% 355 100.0% -88 -100.0% 13,816 100.0%
Child functions
unserialize0 N/A% 536 67.2% 273 76.9% -304 -345.5% 13,688 99.1%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 261 32.7% 74 20.8% -120 -136.4% 72 0.5%
explode0 N/A% -2 -0.3% -3 -0.8% 0 0.0% 0 0.0%