Diff Report
Run #519ff7de62889: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519ff693b4ca2: 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 #519ff7de62889Run #519ff693b4ca2DiffDiff%
Number of Function Calls7 7 0 0.0%
Incl. Wall Time (microsec)872 850 -22 -2.5%
Incl. Wall Time (microsec) per call 125 121 -3 -2.5%
Excl. Wall Time (microsec)126 124 -2 -1.6%
Incl. CPU (microsecs)854 835 -19 -2.2%
Incl. CPU (microsecs) per call 122 119 -3 -2.2%
Excl. CPU (microsec)113 117 4 3.5%
Incl. MemUse (bytes)75,816 75,816 0 0.0%
Incl. MemUse (bytes) per call 10,831 10,831 0 0.0%
Excl. MemUse (bytes)-11,728 -11,728 0 0.0%
Incl. PeakMemUse (bytes)67,384 67,280 -104 -0.2%
Incl. PeakMemUse (bytes) per call 9,626 9,611 -15 -0.2%
Excl. PeakMemUse (bytes)1,680 1,680 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% -22 -1.9% -19 -1.6% 0 0.0% -104 -0.1%
Exclusive Metrics Diff for Current Function-2 -9.1% 4 21.1% 0 N/A% 0 0.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple@10 N/A% -22 -100.0% -19 -100.0% 0 N/A% -104 -100.0%
Child functions
unserialize@10 N/A% -24 -109.1% -24 -126.3% 0 N/A% -104 -100.0%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 4 18.2% 1 5.3% 0 N/A% 0 0.0%
explode0 N/A% 0 0.0% 0 0.0% 0 N/A% 0 0.0%