Diff Report
Run #534ad8dec7444: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #534ad9c94e95b: 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 #534ad8dec7444Run #534ad9c94e95bDiffDiff%
Number of Function Calls9 9 0 0.0%
Incl. Wall Time (microsec)1,131 1,112 -19 -1.7%
Incl. Wall Time (microsec) per call 126 124 -2 -1.7%
Excl. Wall Time (microsec)137 130 -7 -5.1%
Incl. CPU (microsecs)980 979 -1 -0.1%
Incl. CPU (microsecs) per call 109 109 -0 -0.1%
Excl. CPU (microsec)118 120 2 1.7%
Incl. MemUse (bytes)48,808 48,812 4 0.0%
Incl. MemUse (bytes) per call 5,423 5,424 0 0.0%
Excl. MemUse (bytes)-21,400 -21,400 0 0.0%
Incl. PeakMemUse (bytes)81,304 81,308 4 0.0%
Incl. PeakMemUse (bytes) per call 9,034 9,034 0 0.0%
Excl. PeakMemUse (bytes)308 308 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% -19 -1.2% -1 -0.2% 4 0.0% 4 0.0%
Exclusive Metrics Diff for Current Function-7 -36.8% 2 200.0% 0 0.0% 0 0.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple@10 N/A% -19 -100.0% -1 -100.0% 4 100.0% 4 100.0%
Child functions
unserialize@10 N/A% -6 -31.6% -4 -400.0% 4 100.0% 4 100.0%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -5 -26.3% 1 100.0% 0 0.0% 0 0.0%
explode0 N/A% -1 -5.3% 0 0.0% 0 0.0% 0 0.0%