Diff Report
Run #519d4cd4e396d: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519d4dc9980f7: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519d4cd4e396dRun #519d4dc9980f7DiffDiff%
Number of Function Calls103 103 0 0.0%
Incl. Wall Time (microsec)35,218 36,152 934 2.7%
Incl. Wall Time (microsec) per call 342 351 9 2.7%
Excl. Wall Time (microsec)2,298 2,209 -89 -3.9%
Incl. CPU (microsecs)29,827 30,238 411 1.4%
Incl. CPU (microsecs) per call 290 294 4 1.4%
Excl. CPU (microsec)2,112 2,065 -47 -2.2%
Incl. MemUse (bytes)988,828 988,884 56 0.0%
Incl. MemUse (bytes) per call 9,600 9,601 1 0.0%
Excl. MemUse (bytes)-271,740 -271,740 0 0.0%
Incl. PeakMemUse (bytes)1,383,228 1,382,668 -560 -0.0%
Incl. PeakMemUse (bytes) per call 13,429 13,424 -5 -0.0%
Excl. PeakMemUse (bytes)5,592 5,592 0 0.0%

Parent/Child Regression/Improvement report for Drupal\Core\Cache\DatabaseBackend::prepareItem [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::prepareItem0 N/A% 934 6.1% 411 2.8% 56 8.4% -560 -87.0%
Exclusive Metrics Diff for Current Function-89 -9.5% -47 -11.4% 0 0.0% 0 0.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 934 100.0% 411 100.0% 56 100.0% -560 -100.0%
Child functions
unserialize0 N/A% 1,029 110.2% 476 115.8% 56 100.0% -528 -94.3%
explode0 N/A% -6 -0.6% -11 -2.7% 0 0.0% 0 0.0%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 0 0.0% -7 -1.7% 0 0.0% -32 -5.7%