Diff Report
Run #519d9cf28420e: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519d9d94433aa: 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 #519d9cf28420eRun #519d9d94433aaDiffDiff%
Number of Function Calls7 7 0 0.0%
Incl. Wall Time (microsec)630 726 96 15.2%
Incl. Wall Time (microsec) per call 90 104 14 15.2%
Excl. Wall Time (microsec)105 121 16 15.2%
Incl. CPU (microsecs)584 585 1 0.2%
Incl. CPU (microsecs) per call 83 84 0 0.2%
Excl. CPU (microsec)95 114 19 20.0%
Incl. MemUse (bytes)78,096 78,104 8 0.0%
Incl. MemUse (bytes) per call 11,157 11,158 1 0.0%
Excl. MemUse (bytes)-11,416 -11,416 0 0.0%
Incl. PeakMemUse (bytes)98,072 97,864 -208 -0.2%
Incl. PeakMemUse (bytes) per call 14,010 13,981 -30 -0.2%
Excl. PeakMemUse (bytes)696 696 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% 96 3.8% 1 0.1% 8 0.0% -208 -0.3%
Exclusive Metrics Diff for Current Function16 16.7% 19 1900.0% 0 0.0% 0 0.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple@10 N/A% 96 100.0% 1 100.0% 8 100.0% -208 -100.0%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 80 83.3% -18 -1800.0% 0 0.0% 32 15.4%
explode0 N/A% 0 0.0% -1 -100.0% 0 0.0% 0 0.0%
unserialize@10 N/A% 0 0.0% 1 100.0% 8 100.0% -240 -115.4%