Diff Report
Run #51ec485525502: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec489b18752: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem@1

Drupal\Core\Cache\DatabaseBackend::prepareItem@1Run #51ec485525502Run #51ec489b18752DiffDiff%
Number of Function Calls9 9 0 0.0%
Incl. Wall Time (microsec)822 850 28 3.4%
Incl. Wall Time (microsec) per call 91 94 3 3.4%
Excl. Wall Time (microsec)109 111 2 1.8%
Incl. CPU (microsecs)743 731 -12 -1.6%
Incl. CPU (microsecs) per call 83 81 -1 -1.6%
Excl. CPU (microsec)86 102 16 18.6%
Incl. MemUse (bytes)82,304 82,304 0 0.0%
Incl. MemUse (bytes) per call 9,145 9,145 0 0.0%
Excl. MemUse (bytes)-13,784 -13,784 0 0.0%
Incl. PeakMemUse (bytes)98,600 98,600 0 0.0%
Incl. PeakMemUse (bytes) per call 10,956 10,956 0 0.0%
Excl. PeakMemUse (bytes)1,472 1,472 0 0.0%

Parent/Child Regression/Improvement report for Drupal\Core\Cache\DatabaseBackend::prepareItem@1 [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::prepareItem@10 N/A% 28 2.7% -12 -3.1% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function2 7.1% 16 133.3% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple@10 N/A% 28 100.0% -12 -100.0% 0 N/A% 0 N/A%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 47 167.9% -4 -33.3% 0 N/A% 0 N/A%
unserialize@10 N/A% -21 -75.0% -24 -200.0% 0 N/A% 0 N/A%
explode0 N/A% 0 0.0% 0 0.0% 0 N/A% 0 N/A%