Diff Report
Run #519eb7f35533b: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519eb7a1537f7: 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 #519eb7f35533bRun #519eb7a1537f7DiffDiff%
Number of Function Calls7 7 0 0.0%
Incl. Wall Time (microsec)1,109 1,091 -18 -1.6%
Incl. Wall Time (microsec) per call 158 156 -3 -1.6%
Excl. Wall Time (microsec)157 158 1 0.6%
Incl. CPU (microsecs)984 932 -52 -5.3%
Incl. CPU (microsecs) per call 141 133 -7 -5.3%
Excl. CPU (microsec)145 148 3 2.1%
Incl. MemUse (bytes)38,612 38,612 0 0.0%
Incl. MemUse (bytes) per call 5,516 5,516 0 0.0%
Excl. MemUse (bytes)-11,528 -11,528 0 0.0%
Incl. PeakMemUse (bytes)62,648 62,648 0 0.0%
Incl. PeakMemUse (bytes) per call 8,950 8,950 0 0.0%
Excl. PeakMemUse (bytes)640 640 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% -18 -0.6% -52 -3.4% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function1 5.6% 3 5.8% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple@10 N/A% -18 -100.0% -52 -100.0% 0 N/A% 0 N/A%
Child functions
unserialize@10 N/A% -67 -372.2% -68 -130.8% 0 N/A% 0 N/A%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 48 266.7% 12 23.1% 0 N/A% 0 N/A%
explode0 N/A% 0 0.0% 1 1.9% 0 N/A% 0 N/A%